Primary Arthroplasty Research Articles

Solid organ transplant patients do well after shoulder arthroplasty: a propensity matched analysis

Solid organ transplant (SOT) recipients are commonly prescribed immunosuppressive therapies which may predispose patients to higher infection and complication rates following total shoulder arthroplasty. This article aims to analyze the effects SOT and subsequent immunosuppressive regimens have on the functional and patient-reported outcomes of total shoulder arthroplasties. A single institution, multisurgeon retrospective case-control study investigating the functional and patient-reported outcomes of shoulder arthroplasty after SOT was conducted between the years of 2010 and 2020. To be included in the study, patients must have undergone SOT prior to primary total shoulder arthroplasty. A 4:1 match-paired control group lacking SOT prior to arthroplasty was then constructed. Thirty-four SOT patients (18 males and 16 females) and 136 control patients (77 male and 59 female) were included in the study. Patients were analyzed who underwent SOT prior to shoulder arthroplasty, with outcomes compared to controls that only underwent arthroplasty. The primary outcomes include range of motion and strength in forward elevation, external rotation, and internal rotation, and patient reported outcomes. There was no significant difference in improvement for range of motion and strength between the 2 cohorts, but within each cohort, improvement was statistically significant. In the SOT patients, forward elevation improved by 56° ± 52°, external rotation increased by 13° ± 20°, and internal rotation increased by 2 vertebral levels. In the non-SOT patients, forward elevation improved by 45° ± 51°, external rotation increased by 16° ± 25°, and internal rotation increased by 3 vertebral levels. SOT patients had equivocal visual analog scale pain and Simple Shoulder Test scores but lower American Shoulder and Elbow Surgeons (59±13 vs. 79±2; P=.002) and SANE (61±30 vs. 84±17; P<.001) scores than non-SOT patients. Complication rates were not significantly higher in the SOT group (15% vs. 6%; P=.05), but incidence of surgical revisions was not significantly different (SOT=3%; non-SOT=5%; P=.59). Shoulder arthroplasty is a safe, effective surgical intervention for improving shoulder function in patients with a history of SOT. Despite being on chronic immunosuppressive regimens, our solid organ transplants had comparable clinical outcomes and revision rates, but higher complication rates.

The Patient Acceptable Symptom State (PASS) after proximal and distal femoral replacement

IntroductionFemoral megaprostheses are used for bone reconstruction surgery in patients with local tumors or who require multiple revisions. Patient reported outcome measures (PROMs) provide a subjective result and, like patient satisfaction, have become an integral part of the outcomes in orthopedics. However, the threshold of satisfaction (PASS: Patient Acceptable Symptom State) has not yet been defined in a French population after this type of arthroplasty. This led us to carry out a retrospective study on a population of patients who received a femoral reconstruction megaprosthesis in order to 1) define the PASS for the Harris Hip Score (HHS), Knee Society Score (KSS) and the Musculoskeletal Tumor Society score (MSTS), 2) study the complications. HypothesisThe PASS threshold for proximal femur and distal femur reconstruction prothesis for the HHS and the KSS, respectively, will be lower than the threshold for these same scores for primary arthroplasty. Materials and methodsForty-four patients who were operated on between 2009 and 2020 were included: 23 received a proximal femur prosthesis and 21 received a distal femur prosthesis. The PASS threshold was defined using an anchoring strategy by analyzing ROC curves for the HSS for the proximal femur, KSS for the distal femur and the MSTS for all the prostheses. Complications were classified according to Henderson. ResultsThe mean follow-up was 4.5 ± 3.6 (1–12.5) years. The PASS threshold was 47.5 (area under curve (AUC) 0.71 (0.45–0.97)) for the HHS, 69.5 (AUC 0.97 (0.92–1.0)) for the KSS knee and 62.5 (AUC 0.81 (0.61–0.99)) for the KSS function. Thirteen patients (29%) had complications, nine of whom required another surgery (20%). The most frequent were Henderson type 1 (soft tissue lesions, n = 5/44 [11%]) and type 2 (loosening, n = 5/44 [11%]) There was no relationship between satisfaction and postoperative complications (p = 0.071). DiscussionMost of the patients who undergo femoral resection and reconstruction (59%) are satisfied with their function, albeit reduced, despite a high complication rate (29%). Our hypothesis is confirmed for the PASS threshold for the HHS (47.5 versus 93) and the KSS knee and function (69.5 and 62.5 versus 85.5 and 72.5). Level of evidenceIV; retrospective observational single-center study.

Comparison between Total Hip Arthroplasty for Avascular Osteonecrosis of Femoral Head and That for Fixation Failure of Femoral Neck Fracture

Objective: To compare the clinical and radiologic results between primary total hip replacement arthroplasty (THRA) in patients with avascular necrosis of femoral head (AVN) and secondary THRA in patients with fixation failure of femoral neck fracture.Methods: From March 2014 to February 2021, we retrospectively evaluated a total of 53 patients who underwent either THRA for AVN (33 cases) or THRA for fixation failure of femoral neck fracture (20 cases). Clinical performances and Hemodynamic scales were evaluated. Radiologic analyses were conducted to assess stem alignment, stem stability, the appearance of heterotrophic ossification, stress shielding, and any signs of osteolysis or loosening.Results: THRA for AVN showed a mean blood loss of 881 mL and a 2.1 g/dL preoperative–postoperative (preop–postop) hemoglobin (Hb) difference. Meanwhile, THRA for fixation failure of femoral neck fracture showed a mean blood loss of 1,072 mL and a 3.2 g/dL preop–postop Hb difference (P= 0.017 and P= 0.034, respectively). The mean operation time was 70 minutes in THRA for AVN and 91 minutes in THRA for fixation failure of femoral neck fracture (P= 0.035). Stem alignment was varus 1.50° in AVN and varus 3.50° in fixation failure of femoral neck fracture. There was one case of a varus femoral stem in AVN and six such cases in the fixation failure of femoral neck fractures. This was a statistically significant difference (P= 0.010 and P= 0.020, respectively).Conclusion: Secondary THRA in patients with fixation failure of femoral neck fracture showed longer operation time, larger bleeding, and more varus stem alignment than primary THRA in patients with AVN.

A single center descriptive study of local anesthetic dose in knee arthroplasty: Was there evidence of local anesthetic systemic toxicity?

Study objectiveDescribe dosing of local anesthetic when both a periarticular injection (PAI) and peripheral nerve block (PNB) are utilized for knee arthroplasty analgesia, and compare the dosing of local to suggested maximum dosing, and look for evidence of local anesthetic systemic toxicity (LAST). DesignA single center retrospective cohort study between May 2018 and November 2022. SettingA major academic hospital. PatientsPatients who had both a PAI and PNB while undergoing primary, revision, total, partial, unilateral, or bilateral knee arthroplasty. InterventionsNone. MeasurementsCalculate the dose of local anesthetic given via PAI, PNB, and both routes combined as based on lean body weight and compare that to the suggested maximum dosing. Look for medications, clinical interventions, and critical event notes suggestive of a LAST event. Main resultsThere were 4527 knee arthroplasties where both a PAI and PNB were performed during the study period. When combining PAI and PNB doses, >75% of patients received more than the suggested maximum dose of 3 mg/kg lean body weight. The median local anesthetic dosing over the study period, 4.4 mg/kg (IQR 3.5,5.9), was 147% of the suggested maximum dose (IQR 117,197). There was no conclusive evidence of LAST among any of the patients in the study. ConclusionsOver the course of our study, we had 4527 knee arthroplasties with a median PAI and PNB local anesthetic dose that was 147% of the suggested maximum without any clear clinical evidence of a LAST event.

High comorbidity burden and low incidence of adverse events in primary shoulder arthroplasty in tertiary care at a university hospital

BackgroundReducing perioperative risk is in the focus of primary arthroplasty caregivers. Primary shoulder arthroplasty patients are considered among those with the lowest perioperative risk. Nonetheless, in tertiary care centres and university settings patients with significant comorbidities are being treated. It remains unclear whether the overall comorbidity burden is truly higher and if this results in an increased frequency of adverse events (AE). As a result, we conducted a study to assess the comorbidity burden and the frequency of major perioperative adverse events and predictive factors following primary shoulder arthroplasty in the university setting. MethodsA retrospective cohort analysis was conducted on patients undergoing primary shoulder arthroplasty for a non-trauma, non-tumour indication from January 1st, 2014 through December 31st, 2018. Administrative data were recorded to assess comorbidity burden and revision surgery within the first postoperative year. Major adverse events were routinely recorded on a weekly basis by the treating physicians. Descriptive and comparative statistical analyses were performed. The cohort was compared against a large North American sample. ResultsOf 386 patients who underwent 400 primary shoulder arthroplasties 14 (3.5 %) experienced adverse events. While AE were distributed equally among anatomical and reverse shoulder arthroplasties, no adverse event was recorded in the 34 hemiarthroplasty patients. The cohort showed an increased comorbidity burden in international comparison. Peptic ulcer disease was significantly associated with AE, while mild liver disease experienced a trend towards AE. ConclusionWe found an increased comorbidity burden and a low rate of AE for primary shoulder arthroplasty in a tertiary care and university setting. The distinct role of peptic ulcer disease in this cohort and the trend in mild liver disease merit further investigation in larger samples. The findings underscore the importance of perioperative risk assessment and management. Level of evidenceIII, retrospective cohort study.

Revision Rates After Single-Level Cervical Disc Arthroplasty Versus Anterior Cervical Discectomy and Fusion: An Observational Study With 5-Year Minimum Follow-Up.

Retrospective Case-Control study. This study aimed to compare rates and risk factors for all-cause 5-year revisions for patients undergoing primary single-level cervical disc arthroplasty (CDA) versus Anterior Cervical Discectomy and Fusion (ACDF). Prospective studies have compared patient reported outcomes, adjacent segment degeneration, and long-term revisions between CDA and ACDF. Despite these high-level evidence studies, well-powered, large investigations have not been adequately reported. A nationwide database was queried for patients undergoing primary single level CDA or ACDF for degenerative cervical spine pathology. Further inclusion criteria consisted of patients having a minimum of 5-year follow-up. Patients undergoing CDA were 1:5 ratio matched to patients undergoing ACDF by age, sex, comorbidities, and overall Elixhauser comorbidity index (ECI). Objectives were to compare the rates and risk factors of all-cause 5-year revisions for those undergoing single level CDA versus ACDF. Multivariate logistic regression models computed odds ratios (OR) of revisions within 5 years. P values less than 0.001 were significant. A total of 32,953 patients underwent single level CDA (N=5,640) or ACDF (N=27,313) with 5-Year minimum follow-up. The incidence of all cause revisions within 5 years were 1.24% for CDA and 9.23% for ACDF (P<0.001). After adjustment, patients undergoing single level ACDF had significantly higher odds of all-cause revisions within 5 years (OR: 8.09; P<0.0001). Additional patient specific factors associated with revisions were a history of reported drug abuse (OR: 1.51; P<0.0001), depression (OR: 1.23; P<0.0001), cardiac arrythmias (OR: 1.21; P=0.0008), hypertension (OR: 1.20; P=0.0006), and tobacco use (OR: 1.18; P=0.0003). In this study of nearly 33,000 single level cervical spine surgeries with minimum 5-year follow-up, all-cause revision rates were significantly lower for patients undergoing CDA. Surgeons may use this data to counsel patients regarding 5-year revisions following single level CDA or ACDF. III.

Analysis of knee arthroplasty revision causes

Introduction Existing discrepancies in knee arthroplasty registries regarding the definition of indications for revision TKA lead to confusion related to the identification of the leading pathology. Many works indicate not only one but several reasons for revision which makes comparison difficult. Therefore, the issue of categorizing indications for revision TKA is a weak point of the available registries and of any large retrospective series.Purpose To systematize the etiology of pathological conditions leading to revision knee arthroplasty.Materials and methods The study included 361 revision knee arthroplasties. A comparative analysis of the etiology of complications of primary arthroplasty was carried out with data from national arthroplasty registries and clinical studies.Results The main indications for revision knee arthroplasty were infection in 48.2 % of cases (174/361), aseptic implant instability (osteolysis) in 38.2 % (138/361), and instability of the ligamentous apparatus in 4.2 % (15/361). In 98 cases (27.1 %), only one type of complication was identified, and in 263 (85.2 %) more than one. Infection prevailed among early complications (126/234, 54 %) and aseptic loosening (osteolysis) (69/127, 54 %) predominated among late complications.Discussion In our opinion, the indications for revision arthroplasty can be divided into three main etiological groups: periprosthetic infection (group I); conditions associated with a response to polyethylene wear products (osteolysis) (group 2); and biomechanical disorders, which include spatial malposition, incorrect implant sizes and all types of instability (group 3).Conclusion Our systematization of revision arthroplasty causes can help in further research and will be useful in creating a national registry of arthroplasties in Russia.

Time trends in case-mix and risk of revision following hip and knee arthroplasty in public and private hospitals: a cross-sectional analysis based on 476,312 procedures from the Dutch Arthroplasty Register.

This study aims to assess time trends in case-mix and to evaluate the risk of revision and causes following primary THA, TKA, and UKA in private and public hospitals in the Netherlands. We retrospectively analyzed 476,312 primary arthroplasties (public: n = 413,560 and private n = 62,752) implanted between 2014 and 2023 using Dutch Arthroplasty Register data. We explored patient demographics, procedure details, trends over time, and revisions per hospital type. Adjusted revision risk was calculated for comparable subgroups (ASA I/II, age ≤ 75, BMI ≤ 30, osteoarthritis diagnosis, and moderate-high socioeconomic status (SES). The volume of THAs and TKAs in private hospitals increased from 4% and 9% in 2014, to 18% and 21% in 2022. Patients in private hospitals were younger, had lower ASA classification, lower BMI, and higher SES compared with public hospital patients. In private hospitals, age and ASA II proportion increased over time. Multivariable Cox regression demonstrated a lower revision risk for primary THA (HR 0.7, CI 0.7-0.8), TKA (HR 0.8, CI 0.7-0.9), and UKA (HR 0.8, CI 0.7-0.9) in private hospitals. After initial arthroplasty in private hospitals, 49% of THA and 37% of TKA revisions were performed in public hospitals. Patients in private hospitals were younger, had lower ASA classification, lower BMI, and higher SES com-pared with public hospital patients. The number of arthroplasties increased in private hospitals, with a lower revision risk compared with public hospitals.

Low-Dose Enteric-Coated and Chewable Aspirin Are Not Equally Effective in Preventing Venous Thromboembolism in Total Knee and Hip Arthroplasty

BackgroundLow-dose aspirin is an effective venous thromboembolism (VTE) prophylactic medication in primary total joint arthroplasty, but the efficacy and safety of the formulations of chewable and enteric-coated aspirin have not been compared. The purpose of this study was to investigate the VTE and gastrointestinal (GI) complication rates of chewable and enteric-coated 81 mg aspirin bis in die for VTE prophylaxis in primary total joint arthroplasty. MethodsA retrospective, single-institution cohort study was performed on patients who underwent primary total hip arthroplasty (THA) and total knee arthroplasty (TKA) from 2017 to 2021. Comparisons were made between 4,844 patients who received chewable, noncoated aspirin 81 mg and 4,388 patients who received enteric-coated 81 mg aspirin. Power analysis demonstrated 1,978 and 3,686 patients were needed per group to achieve a power of 80% for 90-day VTE rates (using inferiority testing) and GI complications (using superiority testing), respectively. Patients had similar baseline characteristics. Statistical analyses were done using t-tests and Chi-squared tests, with statistical significance defined as a P value < .05. ResultsThere were no significant differences in the incidences of postoperative VTE (0.31% versus 0.55%; P = .111) or GI complications (0.14% versus 0.14%; P = 1.000) between patients who received either chewable or enteric-coated 81 mg aspirin bis in die in the overall comparison that included both THA and TKA patients combined, or THA patients alone. However, the VTE incidence for TKA patients alone was significantly lower with chewable than enteric-coated aspirin (0.22% versus 0.62%; P = .037), with no difference in GI complications (0.13% versus 0.19%; P = .277). ConclusionsLow-dose aspirin in enteric-coated formulation is inferior to chewable aspirin for VTE prophylaxis in primary TKA, but not inferior in THA patients. Both formulations have a similar GI complication rate. Therefore, it is reasonable to consider a transition from enteric-coated to uncoated chewable low-dose aspirin.

Use of pre-operative 3D planning software for revision shoulder arthroplasty: clinical experience data from a survey in a real-world setting

BackgroundPreoperative 3D planning is routinely used in primary shoulder arthroplasty, while specific challenges in the revision setting make such approaches more cumbersome and less accessible. Recently, an established preoperative planning software (Blueprint; Stryker, Tornier SA, Montbonnot-Saint-Martin, France) was expanded to offer a capability for planning of revision and complex primary shoulder arthroplasty cases. The aim of this study was to survey experienced surgeons on their perception of the new software feature for preoperative 3D planning in the setting of revision shoulder arthroplasty. MethodsAn observational survey was conducted from January 2022 to October 2022 among orthopedic surgeons performing revision shoulder arthroplasty cases. The survey was part of the Early Product Surveillance program, with the primary goal of obtaining observational data from surgical experience in a real-world setting. A two-staged survey process was applied with separate questionnaires to seek voluntary feedback on the preoperative planning phase as well as on the intra-operative evaluation of the software planning features in revision shoulder arthroplasty. ResultsTwenty-five fellowship-trained orthopedic surgeons from the USA and Canada participated in the survey and reported their feedback on 34 revision shoulder arthroplasty cases that were preoperatively planned with use of Blueprint revision planning software. The surgeons were largely in favor of the revision software planning features and confirmed perceived benefits of its use in the preoperative planning stage of revision shoulder arthroplasty cases. Reported benefits in the preoperative planning phase included increased efficiency and improved ease of creating an appropriate surgical plan, as well as increased confidence to execute revision shoulder arthroplasty cases. Surgeons also noted improvements in translation of preoperative planning to intra-operative execution of revision cases, including more appropriate implant selection and improved accuracy of implant placement. ConclusionThe feedback from fellowship-trained shoulder arthroplasty surgeons on the use of the new software feature for preoperative 3D planning of revision shoulder arthroplasty is largely favorable. Further research should be conducted to investigate whether these surgeon-perceived benefits can lead to improved clinical outcomes for patients.

3D-printed Personalized Porous Acetabular Component to Reconstruct Extensive Acetabular Bone Defects in Primary Hip Arthroplasty.

Management of extensive acetabular bone defects in total hip arthroplasty (THA) remains challenging. This study aims to investigate the feasibility and preliminary outcomes of 3D-printed personalized porous acetabular components for the reconstruction of acetabular defects in primary THA. This retrospective study involved seven patients who received 3D-printed acetabular components in primary THA between July 2018 and March 2021. Preoperatively, acetabular bone defects were evaluated by referencing the Paprosky classification. There were two "Paprosky type IIIA" defects and five "Paprosky type IIIB" defects. The acetabular components were custom-made for each patient to reconstruct the extensive acetabular defects. The hip function was assessed according to the Harris hip score (HHS). Clinical and radiographic outcomes were assessed. The average follow-up period was 40 months, ranging from 26 to 57 months. There were no patients lost to follow-up. The HHS improved from 44 (range: 33-53) before the operation to 88 (range: 79-93) at the final follow-up. Postoperative X-rays showed that the 3D-printed personalized components were properly fitted with the acetabulum. The average center of rotation (COR) discrepancy was 2.3 mm horizontally and 2.1 mm vertically, respectively. Tomosynthesis-Shimadzu metal artifact reduction technology images showed that the implant was in close contact with the host bone. Moreover, no complications were observed during the follow-up period, including loosening, dislocation, or component protrusion. The implantation of 3D-printed personalized acetabular components showed accurate reconstruction, stable mechanical support, and favorable function at short-term follow-up. This may be a viable alternative method for reconstructing extensive acetabular defects in THA.

Vertical or Horizontal (Bikini) Incision for Direct Anterior Total Hip Arthroplasty: Outcomes of Early (

BackgroundThe horizontal ‘bikini’ incision for direct anterior approach (DAA) total hip arthroplasty has gained popularity due to its early wound healing characteristics; however, the nonextensile nature of this approach may pose problems in treating early complications. This study sought to characterize the outcomes of early revision (<90 days) in patients who underwent anterior hip arthroplasty utilizing either a traditional longitudinal incision or a horizontal (bikini) incision. MethodsThis retrospective study identified patients who underwent DAA primary total hip arthroplasty with a subsequent DAA revision within 90 days. Patients were divided into two cohorts based on the orientation of their incision: either ‘longitudinal incision’ (in accordance with the Smith Peterson interval) or ‘horizontal bikini incision’ (in accordance with the hip flexion crease). ResultsThere were 74 patients who underwent DAA revision arthroplasty within 90 days of primary arthroplasty; 65 had a longitudinal incision, and 9 had a horizontal (bikini) incision. In the longitudinal incision group, 2 patients (3.1%) required plastic surgery closure, and 11 patients (16.9%) required additional operations. Of the 9 bikini incision patients, 6 patients required the assistance of plastic surgery closure, and 7 patients required multiple orthopaedic operations. ConclusionsOur study suggests that a horizontal bikini incision is less forgiving in the early postoperative period if a more extensile exposure is needed for revision surgery, as measured by the need for plastic surgery and additional returns to the operating room. In our cohort, the longitudinal incision allowed for the management of early surgical complications with less morbidity.

Knee

The June 2024 Knee Roundup360 looks at: The estimated lifetime risk of revision after primary knee arthroplasty influenced by age, sex, and indication; Should high-risk patients seek out care from high-volume surgeons?; Stability and fracture rates in medial unicondylar knee arthroplasties; Rethinking antibiotic prophylaxis for dental procedures post-arthroplasty; Evaluating DAIR: a viable alternative for acute periprosthetic joint infection; The characteristics and predictors of mortality in periprosthetic fractures around the knee; Patient health-related quality of life deteriorates significantly while waiting six to 12 months for total hip or knee arthroplasty; The importance of looking for diversity in knee implants.

Unexpected positive cultures of humeral head detected with dithiothreitol in primary shoulder arthroplasty

BackgroundUnexpected positive cultures (UPCs) are frequently observed in primary shoulder arthroplasty and its clinical significance has not yet been well defined. The aim is to evaluate the UPCs in humeral head in primary shoulder replacement and to understand if UPCs increase in patients with risk factors for contamination (previous surgery or infiltrations). MethodsPatients undergoing total shoulder replacement were enrolled in this prospective observational study. To reduce the risk of humeral head contamination, all known procedures to reduce C. acnes burden of the skin were implemented. Patients were divided into 2 groups, namely patients who had undergone previous rotator cuff repair or infiltration and patients with no risk factors for contamination. All the humeral heads harvested were treated with Dithiothreitol, in a specific device (MicroDTTect), to increase the sensitivity of the cultures for bacterial identification. The cultures were analyzed for aerobic and anaerobic bacteria for up to 14 days. ResultsThe UPCs positivity rate of the 80 patients in the study was 19 % (15 patients). The positivity rates for UPCs in the group with and without risk factors were 30 % (12 patients) and 7.5% (3 patients), respectively. The rate of positive culture was higher in men (87%) than in women (13%).The observed positivity was due to Cutibacterium acnes and peptoniphilus asaccarolyticus, both slow-growing anaerobes. ConclusionsPatients with previous surgery or infiltrations had a 4-fold higher rate of positivity for UPCs compared with patients without previous risk factors. The higher percentage of positivity in patients with risk factors could be related to changes in the joint microenvironment after shoulder procedures. We do not know whether the presence of UPCs could be associated with the development of periprosthetic infections at longer follow-up.

Treatment of Hip and Knee Periprosthetic Joint Infection Requires Extensive Administrative Work

BackgroundTreatment of periprosthetic joint infections (PJIs) typically requires more resource utilization than primary total joint arthroplasty. This study quantifies the amount of time spent in the electronic medical record (EMR) for patients who have PJI requiring surgical intervention. MethodsA retrospective analysis of EMR activity for 165 hip and knee PJIs was performed to capture work during the preoperative and postoperative time periods. Independent sample t tests were conducted to compare total time based on procedure, age, insurance, health literacy, sex, race, and ethnicity. ResultsThe EMR work performed by the orthopaedic team was 338.4 minutes (min) (SD 130.3), with 119.4 minutes (SD 62.8) occurring preoperatively and 219.0 minutes (SD 112.9) postoperatively. Preoperatively, the surgeon’s work accounted for 35.7 minutes (SD 25.4), mid-level providers 21.3 minutes (SD 15.9), nurses 38.6 minutes (SD 36.8), and office staff 32.7 minutes (SD 29.9). Infectious disease colleagues independently performed 158.9 minutes (SD 108.5) of postoperative work. Overall, PJI of the knees required more postoperative work. Secondary analysis revealed that patients who have hip PJI and a body mass index <30 and patients <65 years of age required more work when compared to the PJI of heavier and older individuals. There was no difference in total work based on insurance, health literacy, race, or ethnicity. ConclusionsOver 8 hours of administrative work is required for surgical management of PJI. Surgeons alone performed 451% more work for PJI during the preoperative period (7.9 versus 35.7 min) compared to primary total joint arthroplasty. In efforts to provide best care for our sickest patients, much work is required perioperatively. This work is necessary to consider when assigning value and physician reimbursement.

Registration of finger implants in the Dutch arthroplasty registry (LROI)

Finger arthroplasty is commonly used to treat pain in the finger joints due to osteoarthritis or rheumatoid arthritis. Despite the procedure having existed for a relatively long time, it is still unknown which characteristics influence implant survival. The Dutch Arthroplasty Registry (LROI) is one of the 4 registries worldwide registering finger arthroplasties. This study aimed to investigate impact factors for implant survival regarding finger joint arthroplasty and assess registration completeness using the national healthcare claims database to compare. A total of 951 primary arthroplasties and 84 revision arthroplasties of the finger joints were registered. A higher likelihood of primary and revision surgery was found in female patients. The third and fourth proximal interphalangeal (PIP) joints were the most frequently operated in primary surgery; however, the metacarpophalangeal (MCP) joints were the most frequently revised joints. Silicone implants were used in most cases and evenly throughout all digits. Suboptimal registration completeness was shown for plastic surgeons with just 35.5%-37.4% of all surgeries registered. Although orthopedic surgeons do not perform most surgeries on the hand, they registered 76.5%-78.2% of surgeries. No statistical analyses were justified, considering the low completeness and limited follow-up. Female gender and PIP joint disease are possible risk factors for primary arthroplasty. MCP arthroplasties showed higher revision rates. However, participation rates and, therefore, data completeness were not optimal. To optimize participation, improving ease of registration should be explored. Furthermore, we urge readers who deal with joint implants to register their surgeries in the LROI database because only optimal registration completeness leads to high-quality data.

Effects of socioeconomic burden on opioid use following total shoulder arthroplasty

Preoperative opioid users experience worse outcomes and higher complication rates compared to opioid-naïve patients following shoulder arthroplasty. This study evaluates the effects of socioeconomic status, as measured by the Distressed Communities Index (DCI), on pre- and postoperative opioid use and its influence on clinical outcomes such as readmission and revision surgery. A retrospective review of patients who underwent primary shoulder arthroplasty (Current Procedural Terminology code 23472) from 2014 to 2022 at a single academic institution was performed. Exclusion criteria included arthroplasty for fracture, active malignancy, and revision arthroplasty. Demographics, Charlson Comorbidity Index, DCI, and clinical outcomes including 90-day readmission and revision surgery were collected. Patients were classified according to the DCI score of their zip code. Using the Prescription Drug Monitoring Program database, patient pre- and postoperative opioid use in morphine milligram equivalents was gathered. Individuals from distressed communities used more opioids within 90 days preoperatively compared to patients from prosperous, comfortable, mid-tier, and at-risk populations, respectively. Patients from distressed communities also used significantly more opioids within 90 days postoperatively compared with prosperous, comfortable, and mid-tier, respectively. Of patients from distressed communities, 35.1% developed prolonged opioid use (filling prescriptions >30 days after surgery), significantly more than all other cohorts. Among all patients, 3.5% were readmitted within 90 days and were more likely to be prolonged opioid users (38.9 vs. 21.3%, P<.001). Similarly, 1.5% of patients underwent revision surgery. Those who underwent revision were significantly more likely to be prolonged opioid users (38.2 vs. 21.7%, P=.002). Shoulder arthroplasty patients from distressed communities use more opioids within 90 days before and after their surgery and are more likely to become prolonged opioid users, placing them at risk for readmission and revision surgery. Identifying patients at an increased risk for excess opioid use is essential to employ appropriate strategies that minimize the detrimental effects of prolonged use following surgery.

Incidence and associated factors of delirium after primary total joint arthroplasty in elderly patients: A systematic review and meta-analysis.

A total of 1.5% to 20.2% of total joint arthroplasty patients experience delirium. Until now, no formal systematic review or meta-analysis was performed to summarize the risk factors of delirium after primary total joint arthroplasty (TJA). A comprehensive search encompassing Medline, Embase, and the Cochrane central database was conducted, incorporating studies available up to June 2023. We systematically reviewed research on the risk factors contributing to delirium following TJA in elderly patients, without language restrictions. The methodological quality of the included studies was evaluated using the Newcastle-Ottawa Scale. Data synthesis through pooling and a meta-analysis were performed to analyze the findings. A total of 23 studies altogether included 71,095 patients with primary TJA, 2142 cases of delirium occurred after surgery, suggesting the accumulated incidence of 3.0%. The results indicated that age, current smoker, heavy drinker, mini-mental state examination score, hypertension, diabetes mellitus, chronic kidney disease, history of stroke, coronary arterial disease, dementia, history of psychiatric illness, American Society of Anesthesiologists physical status III-IV, general anesthesia, anesthesia time, operative time, intraoperative blood loss, blood transfusion, β-blockers, ACEI drugs, use of psychotropic drugs, preoperative C-reactive protein level, and preoperative albumin level were significantly associated with postoperative delirium after primary TJA. Related prophylaxis strategies should be implemented in the elderly involved with above-mentioned risk factors to prevent delirium after primary TJA.

Operating Room Air May Harbor Pathogens: The Role of an Ultraviolet Air Filtration Unit

BackgroundOne important factor for the prevention of surgical site infections is ultraclean air in the operating room (OR). Still, the direct sterilization potential of most technologies, especially in a dynamic clinical setting, is not well understood. We aimed to determine and compare the microbial presence from the inlet and outlet flow of a filtration unit with crystalline ultraviolet-C (C-UVC) light. MethodsA prospective study was conducted at a single institution, where primary total joint arthroplasty and spine surgeries were performed. The OR was fitted with a positive ventilation system. In addition, a filtration unit with a C-UVC sterilizing light was placed in the OR. The inlet and outlet air flows were swabbed simultaneously and compared. Swabs were processed for culture and next-generation sequencing. ResultsThe mean length of the surgical procedures sampled was 68 ± 13 minutes. Overall, 19 out of 200 (9.5%) swabs isolated microorganisms. Inlet air swabs were positive at a higher rate (16 versus 3%; P < .01) compared to the outlet air swabs. A wide variety of Gram-positive, Gram-negative, and anaerobic bacteria were isolated, but fungi were only recovered from inlet air swabs. The detection of microorganisms was also higher when more door openings were performed (32.5 ± 7.1 versus 27.9 ± 5.6; P < .01). ConclusionsAir swabs mainly isolated microorganisms from the inlet flow to the filtration unit with a C-UVC light. The sterilizing unit counteracted factors affecting the air quality in the OR, namely door openings, surgical personnel, and tissue combustion.

Driving Forces for Outpatient Total Hip and Knee Arthroplasty with Enhanced Recovery After Surgery Protocols: A Narrative Review.

To explore the recent developments and trends in the anesthetic and surgical practices for total hip and total knee arthroplasty and discuss the implications for further outpatient total joint arthroplasty procedures. Between 2012 and 2017 there was an 18.9% increase in the annual primary total joint arthroplasty volume. Payments to physicians falling by 7.5% (14.9% when adjusted for inflations), whereas hospital reimbursements and charges increased by 0.3% and 18.6%, respectively. Total knee arthroplasty and total hip arthroplasty surgeries were removed from the Medicare Inpatient Only in January 2018 and January 2020, respectively leading to same-day TKA surgeries increases from 1.2% in January 2016 to 62.4% by December 2020 Same-day volumes for THA surgery increased from 2% in January 2016 to 54.5% by December 2020. Enhanced Recovery After Surgery (ERAS) protocols have revolutionized modern anesthesia and surgery practices. Centers for Medicare Services officially removed total joint arthroplasty from the inpatient only services list, opening a new door for improved cost savings to patients and the healthcare system alike. In the post-COVID healthcare system numerous factors have pushed increasing numbers of total joint arthroplasties into the outpatient, ambulatory surgery center setting. Improved anesthesia and surgical practices in the preoperative, intraoperative, and postoperative settings have revolutionized pain control, blood loss, and ambulatory status, rendering costly hospital stays obsolete in many cases. As the population ages and more total joint procedures are performed, the door is opening for more orthopedic procedures to exit the inpatient only setting in favor of the ambulatory setting.