Lower Extremity Joint Replacement Research Articles

Outcomes by Race and Ethnicity Following a Medicare Bundled Payment Program for Joint Replacement

The Comprehensive Care for Joint Replacement (CJR) model, a traditional Medicare bundled payment program for lower-extremity joint replacement, is associated with care for patients outside traditional Medicare. Whether CJR model outcomes have differed by patient race or ethnicity outside of traditional Medicare is unclear. To evaluate outcomes associated with the CJR model among Hispanic patients not enrolled in traditional Medicare. This cohort study used hospitalization data from California's Patient Discharge Dataset for all patients who underwent lower-extremity joint replacement in California between January 1, 2014, and December 31, 2017. In California, 3 metropolitan statistical areas (MSAs) were randomly selected to participate in CJR in April 2016. Hospitals not participating in other Medicare Alternative Payment Models were included in the treated group if they were in these 3 MSAs and in the control group if they were in the remaining 23 MSAs. The data analysis was performed between October 1 and December 31, 2023. Comprehensive Care for Joint Replacement program implementation. The main outcomes were hospital length of stay and home discharge rates by race and ethnicity. Home discharge status included self-care, the use of home health services, and hospice care at home. Event study, difference-in-differences, and triple differences models were used to estimate differential changes in health care service use by race and ethnicity for patients in the treated MSAs compared with the control MSAs before vs after CJR implementation. Of 309 834 hospitalizations (patient mean [SD] age, 68.3 [11.3] years; 60.6% women; 14.8% Hispanic; 72.4% non-Hispanic White), 48.0% were in treated MSAs and 52.0% in control MSAs. The CJR program was associated with an increase in home discharge rates for patients without traditional Medicare coverage; however, the increase differed by patient race and ethnicity. The increase was 0.05 (95% CI, 0.02-0.08) percentage points higher for Hispanic patients with Medicare Advantage and 0.03 (95% CI, 0.01-0.04) percentage points higher for Hispanic patients without Medicare compared with their non-Hispanic White counterparts. This cohort study shows that CJR program outcomes differed by race and ethnicity for patients covered outside traditional Medicare, with home discharge rates increasing more for Hispanic compared with non-Hispanic White patients. These findings suggest the importance of considering differential outcomes of Medicare payment policies for racial and ethnic minority patient populations beyond the initially targeted groups.

Association between mandatory bundled payments and changes in socioeconomic disparities for joint replacement outcomes.

To determine whether mandatory participation by hospitals in bundled payments for lower extremity joint replacement (LEJR) was associated with changes in outcome disparities for patients dually eligible for Medicare and Medicaid. We used Medicare claims data for beneficiaries undergoing LEJR in the United States between 2011 and 2017. We conducted a retrospective observational study using a differences-in-differences method to compare changes in outcome disparities between dual-eligible and non-dual eligible beneficiaries after hospital participation in the Comprehensive Care for Joint Replacement (CJR) program. The primary outcome was LEJR complications. Secondary outcomes included 90-day readmissions and mortality. We identified hospitals in the US market areas eligible for CJR. We included beneficiaries in the intervention group who received joint replacement at hospitals in markets randomized to participate in CJR. The comparison group included patients who received joint replacement at hospitals in markets who were eligible for CJR but randomized to control. The study included 1,603,555 Medicare beneficiaries (mean age, 74.6 years, 64.3% women, 11.0% dual-eligible). Among participant hospitals, complications decreased between baseline and intervention periods from 11.0% to 10.1% for dual-eligible and 7.0% to 6.4% for non-dual-eligible beneficiaries. Among nonparticipant hospitals, complications decreased from 10.3% to 9.8% for dual-eligible and 6.7% to 6.0% for non-dual-eligible beneficiaries. In adjusted analysis, CJR participation was associated with a reduced difference in complications between dual-eligible and non-dual-eligible beneficiaries (-0.9 percentage points, 95% CI -1.6 to -0.1). The reduction in disparities was observed among hospitals without prior experience in a voluntary LEJR bundled payment model. There were no differential changes in 90-day readmissions or mortality. Mandatory participation in a bundled payment program was associated with reduced disparities in joint replacement complications for Medicare beneficiaries with low income. To our knowledge, this is the first evidence of reduced socioeconomic disparities in outcomes under value-based payments.

Construction of a Risk Prediction Model for Intraoperative Hypothermia in Patients Undergoing Lower Extremity Joint Replacement

PurposeTo investigate the influencing factors of intraoperative hypothermia (IOH) in patients undergoing total joint arthroplasty (TJA) of the lower extremities, establish a risk prediction model, and test the effect of application. DesignA prospective, observational study was conducted. MethodsPatients who underwent total knee arthroplasty and total hip arthroplasty from June 2020 to December 2021 were prospectively analyzed. According to the occurrence of IOH, patients were divided into the IOH group (temperature less than 36 °C) and non-IOH group (temperature ≥36 °C). We collected demographic, anesthesia, and surgical data for both groups to identify risk factors for IOH and develop a predictive model. The model's goodness of fit was assessed using the Hosmer-Lemeshow test, and its predictive efficacy was evaluated using the receiver operating characteristic curve. FindingsA total of 258 patients were included in this study, with 79 patients in the IOH group and 179 patients in the non-IOH group. Logistic regression analysis showed that American Society of Anesthesiologists' grade, blood loss, and duration of surgery were independent risk factors for IOH in lower extremity TJA patients. Hosmer-Lemeshow test P = .803, area under receiver operating characteristic curve was 0.846, Youden index was 0.490, sensitivity was 65.4%, specificity was 83.6%. In the external validation cohort, the application accuracy of the model was 83.3%. ConclusionsThe prediction model established in this study is suitable for the risk assessment of IOH in TJA patients with good prediction effect, which can provide a tool for clinical medical staff to identify high-risk populations preoperatively.

THE SPILLOVER EFFECTS OF COMPREHENSIVE CARE FOR JOINT REPLACEMENT (CJR) MODEL: A STUDY FROM CALIFORNIA

Abstract In 2016, Medicare implemented the Comprehensive Care for Joint Replacement (CJR) program to test whether paying hospitals a bundled payment for 90 days of an episode of care for lower extremity joint replacement (LEJR), the most common surgery for Medicare beneficiaries, can improve care coordination and quality in traditional Medicare (TM). Unlike most Medicare alternative payment models, CJR participation was randomly assigned across Metropolitan Statistical Areas (MSAs). Hospitals in selected MSAs were required to participate in the program, while hospitals in other MSAs were paid in the usual fee-for-service manner. Taking advantage of this random assignment, we examined CJR’s direct effects on TM patients and spillover effects on Medicare Advantage (MA) and non-Medicare patients in California. Using California’s Patient Discharge Data (PDD) from 2014 to 2017and event study and difference-in-differences models, we studied changes in adjusted length of stay and home discharge rates before and after program implementation in hospitals in treated versus control MSAs. We found that the CJR program affected not only TM patients, but also untargeted MA and non-Medicare patients. Both TM and non-Medicare patients in treated hospitals experienced shortened length of stay (-3.9% & -1.3%, p<0.05) and increased likelihood of discharge home (3.4%, 2.3%, p< 0.001) relative to those in untreated hospitals after program implementation. MA patients experienced an increase in not only home discharge rates (4.7%, p< 0.001) but also length of stay (2.5%, p< 0.01). Programs designed to affect Medicare costs have the potential to affect the care of patients not covered by the program.

FIT AND STRONG! IN ILLINOIS: LESSONS LEARNED

Abstract This session will describe lessons learned from a major effort to disseminate Fit & Strong! (F&S) statewide in Illinois, a state with both strong urban and rural counties. F&S is an evidence-based program for older adults who experience lower extremity mobility challenges. It is recommended for dissemination by the Administration on Community Living and the Centers for Disease Control and Prevention and is currently offered in 32 states. We received a substantial ARPA contract from the Illinois Department of Public Health (IDPH) to disseminate F&S sustainably throughout Illinois, between July 2022 and June 2023. We have convened Referral Network and Sustainability Workgroups to guide the work. Our goal is to identify 111 community-based organizations (CBOs) who can enroll 1,667 older adults into the program. We have developed an extensive number of collaborators including the aging network and a large number of healthcare systems and plans. We are also collaborating with the Illinois Extension Program to reach underserved rural areas of the state. This extensive collaborative effort has enabled us to enroll 70 CBOs that plan to offer the program. This collaboration between aging and healthcare networks that is co-sponsored by the Illinois Department on Aging and IDPH appears to be enabling us to reach a considerable number of providers who previously were not aware of or offering F&S. We are collecting pre/ post participant outcomes to evaluate program impact and examining state fall rates and uptake of lower extremity joint replacements. Lessons learned and preliminary findings will be discussed.

Association Between Hospital Participation in Value-Based Programs and Timely Initiation of Post-Acute Home Health Care, Functional Recovery, and Hospital Readmission After Joint Replacement.

This study examined the association between hospital participation in Bundled Payments for Care Improvement (BPCI) or Comprehensive Care for Joint Replacement (CJR) and the timely initiation of home health rehabilitation services for lower extremity joint replacements. Furthermore, this study examined the association between the timely initiation of home health rehabilitation services with improvement in self-care, mobility, and 90-day hospital readmission. This retrospective cohort study used Medicare inpatient claims and home health assessment data from 2016 to 2017 for older adults discharged to home with home health following hospitalization after joint replacement. Multilevel multivariate logistic regression was used to examine the association between hospital participation in BPCI or CJR programs and timely initiation of home health rehabilitation service. A 2-staged generalized boosted model was used to examine the association between delay in home health initiation and improvement in self-care, mobility, and 90-day risk-adjusted hospital readmission. Compared with patients discharged from hospitals that did not have BPCI or CJR, patients discharged from hospitals with these programs had a lower likelihood of delayed initiation of home health rehabilitation services for both knees and hip replacement. Using propensity scores as the inverse probability of treatment weights, delay in the initiation of home health rehabilitation services was associated with lower improvement in self-care (odds ratio [OR] = 1.23; 95% CI = 1.20-1.26), mobility (OR = 1.15; 95% CI = 1.13-1.18), and higher rate of 90-day hospital readmission (OR = 1.19; 95% CI = 1.15-1.24) for knee replacement. Likewise, delayed initiation of home health rehabilitation services was associated with lower improvement in self-care (OR = 1.16; 95% CI = 1.13-1.20) and mobility (OR = 1.26; 95% CI = 1.22-1.30) for hip replacement. Hospital participation in BPCI or comprehensive CJR was associated with early home health rehabilitation care initiation, which was further associated with significant increases in functional recovery and lower risks of hospital readmission. Policy makers may consider incentivizing health care providers to initiate early home health services and care coordination in value-based payment models.

Association Between a Bundled Payment Program for Lower Extremity Joint Replacement and Patient Outcomes Among Medicare Advantage Beneficiaries

Much of the evidence for bundled payments has been drawn from models in the traditional Medicare program. Although private insurers are increasingly offering bundled payment programs, it is not known whether they are associated with changes in episode spending and quality. To evaluate whether a voluntary bundled payment program offered by a national Medicare Advantage insurer was associated with changes in episode spending or quality of care for beneficiaries receiving lower extremity joint replacement (LEJR) surgery. Cross-sectional study of 23 034 LEJR surgical episodes that emulated a stepped-wedge design by using the time-varying, geographically staggered rollout of the bundled payment program from January 1, 2012, to September 30, 2019. Episode-level multivariable regression models were estimated within practice to compare changes before and after program participation, using episodes at physician practices that had not yet begun participating in the program during a given time period (but would go on to do so) as the control. Data analyses were performed from July 1, 2021, to June 30, 2022. Physician practice participation in the bundled payment program. The primary outcome was episode spending (plan and beneficiary). Secondary outcomes included postacute care use (skilled nursing facility and home health care), surgical setting (inpatient vs outpatient), and quality (90-day complications [including deep vein thrombosis, wound infection, fracture, or dislocation] and readmissions). The final analytic sample included 23 034 LEJR episodes (6355 bundled episodes and 16 679 control episodes) from 109 physician practices participating in the program. Of the beneficiaries, 7730 were male and 15 304 were female, 3057 were Black, 19 351 were White, 447 were of other race or ethnicity (assessed according to the Centers for Medicare & Medicaid Services beneficiary race and ethnicity code, which reflects data reported to the Social Security Administration), and 179 were of unknown race and ethnicity. The mean (SD) age was 70.9 (7.2) years. Participation in the bundled payment program was associated with a 2.7% (95% CI, 1.3%-4.1%) decrease in spending per episode (mean episodic spending, $21 964 [95% CI, $21 636-$22 296] vs $22 562 [95% CI, $22 346-$22 779]), as well as reductions in skilled nursing facility use after discharge (21.3% for bundled episodes vs 25.0% for control episodes; odds ratio [OR], 0.81 [95% CI, 0.67-0.98]) and increased use of the outpatient surgical setting (14.1% for bundled episodes vs 8.4% for control episodes; OR, 1.79 [95% CI, 1.53-2.09]). The program was not associated with changes in quality outcomes, including 90-day complications (8.8% for bundled episodes vs 8.6% for control episodes; OR, 1.02 [95% CI, 0.86-1.20]) and readmissions (4.3% for bundled episodes vs 4.6% for control episodes; OR, 0.92 [95% CI, 0.75-1.13]). In this study of an LEJR bundled payment program offered by a national Medicare Advantage insurer, findings suggest that physician practice participation in the program was associated with a decrease in episode spending without changes in quality. Bundled payments offered by private insurers, including Medicare Advantage plans, are an alternate payment option to fee for service that may reduce spending for LEJR episodes while maintaining quality of care.

Influence of Intraoperative Nociception during Hip or Knee Arthroplasty with Supplementary Regional Anaesthesia on Postoperative Pain and Opioid Consumption.

Background and Objectives: Early postoperative mobilization is central for postoperative outcomes after lower extremity joint replacement surgery. By providing adequate pain control, regional anaesthesia plays an important role for postoperative mobilization. It was the objective of this study to investigate the use of the nociception level index (NOL) to determine the effect of regional anaesthesia in hip or knee arthroplasty patients undergoing general anaesthesia with additional peripheral nerve block. Materials and Methods: Patients received general anaesthesia, and continuous NOL monitoring was established before anaesthesia induction. Depending on the type of surgery, regional anaesthesia was performed with a Fascia Iliaca Block or an Adductor Canal Block. Results: For the final analysis, 35 patients remained, 18 with hip and 17 with knee arthroplasty. We found no significant difference in postoperative pain between hip or knee arthroplasty groups. NOL increase at the time of skin incision was the only parameter associated with postoperative pain measured using a numerical rating scale (NRS > 3) after 24 h in movement (-12.3 vs. +119%, p = 0.005). There was no association with intraoperative NOL values and postoperative opioid consumption, nor was there an association between secondary parameters (bispectral index, heart rate) and postoperative pain levels. Conclusions: Intraoperative NOL changes may indicate regional anaesthesia effectiveness and could be associated with postoperative pain levels. This remains to be confirmed in a larger study.

Persistence of Poverty and its Impact on Surgical Care and Postoperative Outcomes.

We sought to characterize the association between prolonged county-level poverty with postoperative outcomes. The impact of long-standing poverty on surgical outcomes remains ill-defined. Patients who underwent lung resection, colectomy, coronary artery bypass graft, or lower extremity joint replacement were identified from Medicare Standard Analytical Files Database (2015-2017) and merged with data from the American Community Survey and the United States Department of Agriculture. Patients were categorized according to the duration of high poverty status from 1980 to 2015 [ie, never high poverty (NHP), persistent poverty (PP)]. Logistic regression was used to characterize the association between the duration of poverty and postoperative outcomes. Principal component and generalized structural equation modeling were used to assess the effect of mediators in the achievement of Textbook Outcomes (TO). Overall, 335,595 patients underwent lung resection (10.1%), colectomy (29.4%), coronary artery bypass graft (36.4%), or lower extremity joint replacement (24.2%). While 80.3% of patients lived in NHP, 4.4% resided in PP counties. Compared with NHP, patients residing in PP were at increased risk of serious postoperative complications [odds ratio (OR)=1.10, 95% CI: 1.05-1.15], 30-day readmission (OR=1.09, 95% CI: 1.01-1.16), 30-day mortality (OR=1.08, 95% CI: 1.00-1.17), and higher expenditures (mean difference, $1010.0, 95% CI: 643.7-1376.4) (all P <0.05). Notably, PP was associated with lower odds of achieving TO (OR=0.93, 95% CI: 0.90-0.97, P <0.001); 65% of this effect was mediated by other social determinant factors. Minority patients were less likely to achieve TO (OR=0.81, 95% CI: 0.79-0.84, P <0.001), and the disparity persisted across all poverty categories. County-level poverty duration was associated with adverse postoperative outcomes and higher expenditures. These effects were mediated by various socioeconomic factors and were most pronounced among minority patients.

The Efficacy of a Preoperative Occupational Therapy Educational Session for Saudi Patients Undergoing a Lower Extremity Joint Replacement.

Prior to a lower extremity joint replacement, many surgical candidates participate in a preoperative occupational therapy educational program that is meant to increase patient awareness, promote positive health behaviors, and improve health outcomes after surgery. With the limited number of occupational therapists in Saudi Arabia, patients may only receive one preoperative educational session. The objective of the study was to explore the efficacy of one preoperative occupational therapy educational session for patients undergoing a lower extremity joint replacement. A total of 19 participants were included in the study, 7 participants to the intervention and 12 participants to the control groups. Participants underwent either a total knee or total hip replacement. The intervention group received one preoperative educational session prior to the surgery and the control group received usual care. After the surgery, both groups were assessed on pain (SF-MPQ), Satisfaction (SPSQ), Quality of life (QOLS), functional performance (FIM). Mann-Whitney U-tests were used to compare between groups. The findings showed significant improvements in both pain (12.14 ± 7.22 vs 21.25 ± 8.60; p=0.02) and satisfaction (106.28 ± 25.17 vs 78.08 ± 31.49; p=0.03) when compared to usual care. Although both FIM and QOLS scores indicated improvements when compared to usual care, these results were not statistically significant. Effect sizes showed moderate and large effects for score differences on both the SF-MPQ and SPSQ (r= 0.47, r=0.52) respectively. Whereas effect sizes for score differences on both the FIM and QOLS were small. An occupational therapy preoperative education session shows promise for patients undergoing lower extremity joint replacement; however, further research is needed to confirm these findings.

Association of Skilled Nursing Facility Participation in Voluntary Bundled Payments With Postacute Care Outcomes for Joint Replacement.

The Medicare Bundled Payments for Care Improvement (BPCI) model 3 of 2013 holds participating skilled nursing facilities (SNFs) responsible for all episode costs. There is limited evidence regarding SNF-specific outcomes associated with BPCI. To examine the association between SNF BPCI participation and patient outcomes and across-facility differences in these outcomes among Medicare beneficiaries undergoing lower extremity joint replacement (LEJR). Observational difference-in-differences (DID) study of 2013-2017 for 330 unique persistent-participating SNFs, 146 unique dropout SNFs, and 14,028 unique eligible nonparticipating SNFs. Rehospitalization within 30 and 90 days after SNF admission, and rate of successful discharge from the SNF to the community. Total 636,355 SNF admissions after LEJR procedures were identified for 582,766 Medicare patients [mean (SD) age, 76.81 (9.26) y; 424,076 (72.77%) women]. The DID analysis showed that for persistent-enrollment SNFs, no BPCI-related changes were found in readmission and successful community discharge rates overall, but were found for their subgroups. Specifically, under BPCI, the 30-day readmission rate decreased by 2.19 percentage-points for White-serving SNFs in the persistent-participating group relative to those in the nonparticipating group, and by 1.75 percentage-points for non-Medicaid-dependent SNFs in the persistent-participating group relative to those in the nonparticipating group; and the rate of successful community discharge increased by 4.44 percentage-points for White-serving SNFs in the persistent-participating group relative to those in the nonparticipating group, whereas such relationship was not detected among non-White-serving SNFs, leading to increased between-facility differences (differential DID=-7.62). BPCI was not associated with readmission or successful community discharge rates for dropout SNFs, overall, or in subgroup analyses. Among Medicare patients receiving LEJR, BPCI was associated with improved outcomes for White-serving/non-Medicaid-dependent SNFs but not for other SNFs, which did not help reduce or could even worsen the between-facility differences.

Home Health Unplanned Readmission Across Metro and Rural Areas following Stroke and Joint Replacement.

<h3>Research Objectives</h3> Explore national geographic differences in unplanned readmission after accounting for patient-level admission factors and area-level post-acute care availability for individuals receiving home health services following stroke or lower-extremity joint replacement (JR). <h3>Design</h3> Retrospective cross-sectional analysis of Centers for Medicare & Medicaid Services (CMS) home health claims records and the Outcome and Assessment Information Set (OASIS). Using Rural-Urban Continuum Codes (RUCC) we classified all US counties into metro, metro-adjacent rural, and non-metro-adjacent rural areas and examined the availability of other post-acute care (PAC) provider types (long-term care hospitals, skilled nursing (SNF), and inpatient rehabilitation facilities) in each. We conducted multilevel logistic regressions to show the association between county classification and the odds of an unplanned readmission. <h3>Setting</h3> We examined acute care discharges to home health agencies. <h3>Participants</h3> The population included 100% Medicare records from 2013–2015 fee-for-service beneficiaries >65 years. The cohort included 21,395 stroke records and 160,287 JR records. <h3>Interventions</h3> N/A. <h3>Main Outcome Measures</h3> Odds of an unplanned readmission for individuals who received home health services following stroke or JR. <h3>Results</h3> Overall, 11.0% of stroke and 3.4% of JR had an unplanned readmission. For those >65 with JR, unplanned readmissions increased as age (range 2.6–5.4%) and length of stay (2.9–13%) increased. PAC availability other than home health varied across county groups. For metro counties, >50% were SNF-only; only 20% had all PAC provider types, whereas 80% of metro-adjacent rural counties were SNF-only with < 2% with all PAC provider types. Compared to metro areas, residing in a rural area was protective of readmission for those with stroke (metro-adjacent rural OR=0.887 (95CI 0.751–1.047), metro non-adjacent rural OR=0.789 (0.634–0.982). There was no significant effect of rural area on JR unplanned readmission. <h3>Conclusions</h3> Residing in rural counties is protective against unplanned readmission following home health services for stroke care. Further research should characterize social and contextual factors in rural areas that contribute to community-dwelling individuals' health. <h3>Author(s) Disclosures</h3> This work was supported by the Agency for Healthcare Research and Quality (AHRQ) R01-HS024711. Authors declare no conflicts.

Procedure Cost Comparison of Outpatient and Inpatient Shoulder Arthroplasty and Lower-Extremity Arthroplasty Within a Managed-Care Organization.

Introduction The authors sought to evaluate cost differences between shoulder arthroplasties and lower-extremity joint replacements in the outpatient and inpatient setting within a large health-maintenance organization. Methods A cross-sectional study of 100 total hip arthroplasties (THA), 100 total knee arthroplasties (TKA), and 100 shoulder arthroplasties (50 anatomical total shoulder arthroplasties and 50 reverse shoulder arthroplasties [RTSA]) was performed at a single regional health care center within an integrated health care maintenance organization. A time-driven activity-based costing methodology was used to obtain total cost of each episode for outpatient (vs) inpatient surgery. Results are presented by procedure type. Results Compared to their respective inpatient procedure, outpatient surgery was less expensive by 20% for RTSA, 22% for total shoulder arthroplasties, 29% for THA, and 30% for TKA. The cost of implants was the highest proportion of cost for all joint procedures across inpatient and outpatient settings, ranging from 28% of the total cost for inpatient THA to 63% of the cost for outpatient RTSA. Discussion Although many factors influence the total cost for arthroplasty surgery, including rate of hospitalization, duration of stay, operative time, complexity of cases, patient factors, equipment, and resource utilization, the implant cost remains the most expensive factor, with hospital bed admission status being the second costliest contribution. Conclusion Outpatient total arthroplasty substantially reduced procedure expenses in a managed-care setting by 20%-30%, although savings for outpatient shoulder arthroplasty was lower than savings for THA or TKA. Implant costs remain the largest portion of shoulder arthroplasty procedure expenses.

How Does the Effect of the Comprehensive Care for Joint Replacement Model Vary Based on Surgical Volume and Costs of Care?

The Center for Medicare and Medicaid Innovation revised the comprehensive Care for Joint Replacement (CJR) program, a mandatory 90-day bundled payment for lower extremity joint replacement, in December 2017, retaining 34 of the original 67 metropolitan statistical areas with higher volume and historic episode payments. We describe differences in costs, quality, and patient selection between hospitals that continued to participate compared with those that withdrew from CJR before and after the implementation of CJR. We used a triple difference approach to compare the magnitude of the policy effect for elective admissions between hospitals that were retained in the CJR revision or not, before and after the implementation of CJR, and compared with hospitals in nonparticipant metropolitan statistical areas. 694,275 Medicare beneficiaries undergoing elective lower extremity joint replacement from January 1, 2013 to August 31, 2017. The treatment effect heterogeneity of CJR. Hospitals retained in the CJR policy revision had a greater reduction in 90-day episode-of-care cost compared with those that were allowed to discontinue (-$846, 95% CI: -$1,338, -$435) and had greater cost reductions in the more recent year (2017). We also found evidence that retained CJR hospitals disproportionately reduced treating patients who were older than 85 years. Hospitals that continued to participate in CJR after the policy revision achieved a greater cost reduction. However, the cost reductions were partly attributed to avoiding potential higher - cost patients, suggesting that a bundled payment policy might induce disparities in care delivery.

The potential risk of using historic claims to set bundled payment prices: the case of physical therapy after lower extremity joint replacement

BackgroundOne of the most significant challenges of implementing a multi-provider bundled payment contract is to determine an appropriate, casemix-adjusted total bundle price. The most frequently used approach is to leverage historic care utilization based on claims data. However, those claims data may not accurately reflect appropriate care (e.g. due to supplier induced demand and moral hazard effects). This study aims to examine variation in claims-based costs of post-discharge primary care physical therapy (PT) utilization after total knee and hip arthroplasties (TKA/THA) for osteoarthritis patients.MethodsThis retrospective cohort study used multilevel linear regression analyses to predict the factors that explain the variation in the utilization of post-discharge PT after TKA or THA for osteoarthritis patients, based on the historic (2015–2018) claims data of a large Dutch health insurer. The factors were structured as predisposing, enabling or need factors according to the behavioral model of Andersen.ResultsThe 15,309 TKA and 14,325 THA patients included in this study received an average of 20.7 (SD 11.3) and 16.7 (SD 10.1) post-discharge PT sessions, respectively. Results showed that the enabling factor ‘presence of supplementary insurance’ was the strongest predictor for post-discharge PT utilization in both groups (TKA: β = 7.46, SE = 0.498, p-value< 0.001; THA: β = 5.72, SE = 0.515, p-value< 0.001). There were also some statistically significant predisposing and need factors, but their effects were smaller.ConclusionsThis study shows that if enabling factors (such as supplementary insurance coverage or co-payments) are not taken into account in risk-adjustment of the bundle price, they may cause historic claims-based pricing methods to over- or underestimate appropriate post-discharge primary care PT use, which would result in a bundle price that is either too high or too low. Not adjusting bundle prices for all relevant casemix factors is a risk because it can hamper the successful implementation of bundled payment contracts and the desired changes in care delivery it aims to support.

Impact of the Comprehensive Care for Joint Replacement model on patient-reported outcomes.

To determine whether the Comprehensive Care for Joint Replacement (CJR) model, a mandatory episode-based payment program for knee and hip replacement surgery, affected patient-reported measures of quality. Surveys of Medicare fee-for-service beneficiaries who had hip or knee replacement surgery, collected between July 2018 and March 2019, secondary Medicare administrative data, the Provider of Services file, CJR and Bundled Payments for Care Improvement participant lists from the Centers for Medicare & Medicaid Services, and the Area Health Resource Files. In 2018, participation in the CJR model was mandatory for nearly all hospitals in 34 randomly selected, metropolitan statistical areas (MSAs) that had high historical Medicare payments for lower-extremity joint replacements surgery. The control group included 47 high-payment MSAs randomly assigned as controls. We estimated risk-adjusted differences in self-reported measures of functional status and pain, satisfaction with care, and caregiver help between respondents in CJR hospitals and respondents in hospitals located in the control group. We selected a census of CJR patients and an equal number of control patients to survey. We fielded two waves of surveys using a mail and phone protocol, yielding 8433 CJR and 9014 control respondents. CJR respondents were slightly more likely to depend on caregivers for certain activities of daily living when they got home (either directly from the hospital or after an institutional post-acute care stay). On a 100-point scale, differences ranged from -2.6 points (p< 0.01) for help needed bathing to -1.7 points (p< 0.05) for help needed using the toilet. However, differences in eight measures of self-reported functional status approximately 90-120 days after hospital discharge were not statistically significant, ranging from -1.1% (p= 0.087) to 0.7% (p= 0.437). CJR did not harm patient health or affect patient satisfaction on average but did increase reliance on caregivers during recovery.

The impact of wait time on patient outcomes in knee and hip replacement surgery: a scoping review protocol

BackgroundTotal hip and total knee replacement surgery are in high demand, leading to long wait times for many patients. While on the waiting list, patients may experience worsening pain, reduced mobility, and deteriorating health. Given that long wait times are common for lower joint replacement surgery, it is important to understand how patient health changes during the wait period and whether this impacts patient outcomes after surgery. The aim of this scoping review will be to identify and describe the evidence regarding the impact of wait time on patient outcomes for patients who undergo total knee and total hip replacement surgery.MethodsThis scoping review was designed with guidance from the Joanna Briggs Institute Manual for Evidence Synthesis, and results will be reported following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews. EMBASE, Medline, PubMed, Scopus, CINAHL, and Cochrane electronic databases will be searched for English language articles published after 1999. Studies of adult patients with osteoarthritis undergoing primary knee or hip replacement surgery, which measure patient outcomes over the wait period for surgery, will be included. Two independent reviewers will screen titles and abstracts followed by full article review. Data will be extracted by two reviewers using a standardized form. Outcomes assessed during the wait period will be identified and described in tables. Factors associated with changes in health status during the wait period will be qualitatively described.DiscussionThis review will map the evidence regarding wait times for lower extremity joint replacement surgery. Better understanding of how the impact of wait times on patient health status is measured over the perioperative period will inform future research on wait times.Scoping review registrationRegistered with Open Science Framework, Feb 14, 2021 DOI: https://doi.org/10.17605/OSF.IO/MV4FS

Hip and Knee Arthroplasty Alternative Payment Model Successes and Challenges.

Hip and Knee Arthroplasty Alternative Payment Model Successes and Challenges.

Impact of Hospital-Based Rehabilitation Services on Discharge to the Community by Value-Based Payment Programs After Joint Replacement Surgery.

The purpose of this study was to examine the impact of hospital-based rehabilitation services on community discharge rates after hip and knee replacement surgery according to hospital participation in value-based care models: bundled payments for care improvement (BPCI) and comprehensive care for joint replacement (CJR). The secondary objective was to determine whether community discharge rates after hip and knee replacement surgery differed by participation in these models. A secondary analysis of Medicare fee-for-service claims was conducted for beneficiaries 65years of age or older who underwent hip and knee replacement surgery from 2016 to 2017. Independent variables were hospital participation in value-based programs categorized as: (1) BPCI, (2) CJR, and (3) non-BPCI/CJR; and total minutes per day of hospital-based rehabilitation services categorized into tertiles. The primary outcome variable was discharged to the community versus discharged to institutional post-acute care settings. The association between rehabilitation amount and community discharge among BPCI, CJR, and non-BPCI/CJR hospitals was adjusted for patient-level clinical and hospital characteristics. Participation in BPCI or CJR was not associated with community discharge. This analysis found a dose-response relationship between the amount of rehabilitation services and odds of community discharge. Among those who received a hip replacement, this relationship was most pronounced in the BPCI group; compared with the low rehabilitation category, the medium category had odds ratio (OR) = 1.28 (95% CI = 1.17 to 1.41), and the high category had OR = 1.90 (95% CI = 1.71 to 2.11). For those who received a knee replacement, there was a dose-response relationship in the CJR group only; compared with the low rehabilitation category, the medium category had OR = 1.21 (95% CI = 1.15 to 1.28), and the high category had OR = 1.56 (95% CI = 1.46 to 1.66). Regardless of hospital participation in BPCI or CJR models, higher amounts of rehabilitation services delivered during acute hospitalization is associated with a higher likelihood of discharge to community following hip and knee replacement surgery. In the era of value-based care, frontloading of rehabilitation care is vital for improving patient-centered health outcomes in acute phases of lower extremity joint replacement.

Medicare Bundled Payment Model for Total Ankle Arthroplasty

Category:Ankle; OtherIntroduction/Purpose:Total ankle arthroplasty (TAA) is included in the Centers of Medicare and Medicaid Services' (CMS) Bundled Payments for Care Improvement (BPCI) initiative for lower extremity joint replacements. This model has been demonstrated to be for total hip arthroplasty (THA) and total knee arthroplasty (TKA). However, there remains concern that the model underestimates expected costs for TAA due to the unique healthcare needs of TAA patients including higher implant costs, longer procedures, and an increased demand for postoperative acute care services due to non-weightbearing. The purpose of this study was to analyze the breakdown of costs associated with inpatient and outpatient care and assess the difference between Medicare beneficiary reimbursements and actual costs for the episode of care.Methods:An IRB-approved retrospective review was conducted of patients with Medicare who underwent TAA between July 2014 and June 2018. The surgeries were performed at seven facilities affiliated with a singular institution hospital system. Patients undergoing TAA in this time period were identified using an institutional arthroplasty database and were eligible for study. Of 99 patients who met this criterion, financial data was available for 72. Demographics including age, gender, BMI, and comorbidities were collected via chart review. Episode start and end dates, first post-acute care discharge destination, and total episode costs were recorded. Total episode cost was subdivided into inpatient facility cost, surgeon fees, and post-acute care discharge costs (inpatient rehab facility costs, skilled nursing facility expenses, or home health aide fees). Patients were stratified into two groups based on 90-day costs of care, a 'positive group' not exceeding the bundled payment allocation and a 'negative group' which did exceed.Results:No statistically significant difference was found among demographics between the positive and negative patient groups. Average group age was 70.5 years and 72.9 years, respectively, and both groups had average BMI of 29.3 kg/m2. Age-adjusted Charlson Comorbidity Index was 3.35 for the positive group and 3.40 for the negative group. Total episode costs were 50% higher in the negative group compared to the positive group ($31,462 vs. $15,845). The total post discharge costs for the negative group were $17,912 which is significantly higher than those of the positive group ($2,502) (P<0.001). Thirteen patients (18.1%) attended skilled nursing facilities, and 12 of these patients exceeded the allocated budget. Average SNF cost was $13,089, which nearly matched the entire inpatient cost (facility + surgeon fees) of $13,400. Home health aide requirement was significant at 39% (n=28), and 15 of these patients (54%) also came in over budget.Conclusion:Results suggest that there is a considerable possibility for patients undergoing TAA to have post-acute care requirements that drive cost over budget, including admittance to skilled nursing facilities and home health aide, likely sue to the added necessity for extended immobilization in an older patient population. Such parameters should be factored into the BPCI reimbursement model for TAA.