Risk Factors For Revision Surgery Research Articles

The Association Between Hounsfield Units and Mechanical Failure in ASD Patients.

Retrospective Cohort Study. Low bone mineral density (BMD) is a known risk factor for revision surgery in patients with adult spinal deformity (ASD). Hounsfield units (HUs) on CT scans have been suggested as a proxy for assessing BMD. This study aimed to determine HUs in the lumbar region and their association with mechanical failure in patients undergoing ASD surgery. We included ASD patients undergoing surgery from 2010-2020 with minimum 2-year follow-up. We excluded patients without preoperative CT scans, or a CT scan more than 1year before surgery. Mechanical failure was defined as proximal junctional failure, pseudarthrosis, or implant failure requiring revision surgery. On preoperative CT scans, HUs were measured on 3 axial slices on each vertebra from L1-L5 and, if available, at UIV and UIV + 1. We included 170 patients, mean age 63 (±12) years, with 108 (64%) females, and 13 [IQR 10-16] instrumented levels. Mechanical failure occurred in 27% (n = 46) of patients at 2-year follow-up. Mean lumbar HUs were 146 (±51) in the mechanical failure group and 135 (±52) in those without revision (P = .232). Area under the curve was 0.58 (95% CI: 0.48-0.68), corresponding to no to low discriminatory power in predicting mechanical failure using lumbar HUs. Univariate logistic regression revealed no significant difference between mechanical failure and lumbar HUs (OR = 1.00, 95% CI: 1.00-1.01, P = .239). We found no association between mechanical failure and HUs on preoperative CT scans in ASD patients. Thus, we cannot recommend using HUs to predict mechanical failure in these patients.

Revision Surgery Following Primary Reconstruction for Hand Syndactyly

Web creep and scar contracture are established complications of syndactyly reconstruction; however, few reports characterize risk factors for revision surgery. The purpose of this investigation was to examine the rate and risk factors of reoperation for congenital hand syndactyly. Patients undergoing syndactyly reconstruction from 2007 to 2021 at a single children's hospital were reviewed. Cases with less than 1 year of follow-up were excluded. Demographic, surgical, and outcomes data were recorded by each web space to account for mixed treatments. In total, 514 web spaces in 231 children were reviewed with a mean follow-up of 6.0 years after primary reconstruction; 66 (12.8%) web spaces in 51 (22.1%) children underwent revision. The most common procedures were web space deepening due to web creep (57.9% of cases) and digital scar contracture release (45.6%); these were augmented in a minority (17.5%) of cases by other aesthetic/functional procedures. Revisions occurred at a median of 1.7 years after primary reconstruction. First web spaces (thumb-index finger) were most frequently reoperated (33.3%). On multivariable analysis, first web space involvement, complete syndactyly, and complications after the primary reconstruction significantly increased odds of revision. Age at primary reconstruction was not a significant predictor. Following revision, 10.5% of cases had recurrent web creep, and 14.0% had recurrent scar contracture. Eight (1.6%) web spaces in seven (3.0%) children required multiple revisions. Approximately 13% of syndactyly reconstructions (22% of patients) require reoperation. Most revisions occur within 4 years of primary reconstruction. Complete syndactyly, complications after the primary reconstruction, and first web space involvement increase the risk of revision; age at primary reconstruction is not a risk factor. Revision outcomes mirror the index procedure, with 10% to 14% of revised web spaces experiencing recurrent web creep or contracture. Therapeutic IV.

Understanding risk factors for revision surgery after cubital tunnel release: Analysis of patient selection, surgeon, and clinical factors

PurposeThe purpose of this study was to identify and characterize factors that may contribute to revision surgery following primary cubital tunnel release (CuTR) surgery. MethodsA retrospective study was performed by reviewing all patients who underwent CuTR at a single institution between 2014 and 2021. Only primary in situ CuTR surgeries were included. Exclusion criteria were any case of primary ulnar nerve transpositions or ulnar nerve decompression surgery related to pathology other than isolated ulnar neuropathy (ie. elbow fracture repair, medial epicondylitis debridement, etc.). Revision surgery was defined as return to the operating room by the index surgeon or another surgeon within the same practice for repeat ulnar nerve decompression and/or transposition. Patient demographics and surgical information was analyzed to determine factors that may be associated with revision surgery following primary in situ ulnar nerve decompression. ResultsA total of 1367 patients met inclusion criteria. Revision rate following primary CuTR was 1.2 ​% (n ​= ​16). Of the factors evaluated, younger age (46.6 vs 57.0 years) and a history of cervical stenosis had a higher correlation with undergoing a revision. Patients who had revision surgery were more likely to have negative electrodiagnostic studies versus those who did not. Otherwise, there was no association between sex, race, tobacco use, medical comorbidities, symptom severity, bilateral symptoms, or concurrent surgery and the subsequent need for revision ulnar nerve decompression. ConclusionsFollowing primary in situ CuTR, younger age or a history of cervical stenosis may be at higher risk of undergoing revision surgery. Additionally, patients without electrodiagnostic evidence of ulnar neuropathy may have less reliable outcomes versus those who have a positive nerve study. Given the unpredictable nature of ulnar nerve surgery, further prospective data including diagnostic imaging and biomechanical evaluation of patients following ulnar nerve release may help provide a deeper understanding of this unique patient population. Level of evidencePrognostic, level IV.

Low implantation volume, comorbidities, male sexand implantation of constrained TKA identified as risk factors for septic revision in knee arthroplasty:A register-based study from the German Arthroplasty Registry.

Periprosthetic joint infection (PJI) is a major cause of revision surgery after total knee arthroplasty (TKA) and unicondylar knee arthroplasty (UKA). Patient- and hospital-related risk factors need to be assessed to prevent PJI. This study identifies influential factors and differences in infection rates between different implant types. Data were obtained from the German Arthroplasty Registry. Septic revisions were calculated using Kaplan-Meier estimates with septic revision surgery as the primary endpoint. Patients with constrained and unconstrained TKA or UKA were analysed using Holm's multiple log-rank test and Cox's proportional hazards ratio. The 300,998 cases of knee arthroplasty analysed included 254,144 (84.4%) unconstrained TKA, 9993 (3.3%) constrained TKA and 36,861 (12.3%) UKA with a maximum follow-up of 7 years. At 1 year, the PJI rate was 0.5% for UKA and 2.8% for TKA, whereas at 7 years, the PJI rate was 4.5% for UKA and 0.9% for TKA (p < 0.0001). The PJI rate significantly increased for constrained TKA compared to unconstrained TKA (p < 0.0001). The PJI rate was 2.0% for constrained TKA and 0.8% for unconstrained TKA at 1 year and 3.1% and 1.4% at 7 years. Implantation of a constrained TKA (hazard ratio [HR] = 2.55), male sex (HR = 1.84), increased Elixhauser score (HR = 1.18-1.56) and implant volume of less than 25 UKA per year (HR = 2.15) were identified as risk factors for revision surgery; an Elixhauser score of 0 (HR = 0.80) was found to be a preventive factor. Reduced implant volume and constrained knee arthroplasty are associated with a higher risk of PJI. Comorbidities (elevated Elixhauser score), male sex and low UKA implant volume have been identified as risk factors for PJI. Patients who meet these criteria require specific measures to prevent infection. Further research is required on the potential impact of prevention and risk factor modification. Level III.

Secondary Surgery Following Lapidus Bunionectomy

While the Lapidus bunionectomy is a common procedure utilized to address hallux valgus, the incidence of secondary surgery is not well established. Our primary goal was to determine the incidence of revision surgery and hardware removal following the Lapidus bunionectomy in addition to the risk factors associated with each. A retrospective nested case-control study of adult patients who underwent a Lapidus bunionectomy for symptomatic hallux valgus over a 9-year period was performed. The incidence rates and 95% confidence intervals (CI) of secondary surgery in the 3 years following the procedure along with the estimated independent associations and odds ratios between baseline demographic, clinical, and radiographic characteristics were calculated. Of the original cohort of 2540 patients, 127 were identified (5.0%; CI: 4.1%, 5.8%) who underwent revision surgery and 165 (6.5%; CI: 5.5%, 7.5%) who underwent hardware removal following Lapidus bunionectomy. Initially, the hallux valgus angle, intermetatarsal angle, and tibial sesamoid position were risk factors for revision surgery. However, in adjusted analyses for revision surgery, using a screw for third point of fixation emerged as the only independent risk factor (odds ratio [OR] = 3.01; CI: 1.59, 5.69). In adjusted analyses for hardware removal, female sex (OR = 2.33; CI: 1.08, 5.00) and third point of fixation (OR = 2.92; CI: 1.82, 4.69) emerged as independent risk factors. While the overall risks associated with Lapidus bunionectomy are low and the need for revision surgery are low, this study helps to identify specific risk factors for secondary surgery and hardware removal to help in evaluation and discussion with patients.

Can Early Post-Operative Scoring of Non-Traumatic Amputees Decrease Rates of Revision Surgery?

Background and Objectives: Medical registries evolved from a basic epidemiological data set to further applications allowing deriving decision making. Revision rates after non-traumatic amputation are high and dramatically impact the following rehabilitation of the amputee. Risk scores for revision surgery after non-traumatic lower limb amputation are still missing. The main objective was to create an amputation registry allowing us to determine risk factors for revision surgery after non-traumatic lower-limb amputation and to develop a score for an early detection and decision-making tool for the therapeutic course of patients at risk for non-traumatic lower limb amputation and/or revision surgery. Materials and Methods: Retrospective data analysis was of patients with major amputations lower limbs in a four-year interval at a University Hospital of maximum care. Medical records of 164 patients analysed demographics, comorbidities, and amputation-related factors. Descriptive statistics analysed demographics, prevalence of amputation level and comorbidities of non-traumatic lower limb amputees with and without revision surgery. Correlation analysis identified parameters determining revision surgery. Results: In 4 years, 199 major amputations were performed; 88% were amputated for non-traumatic reasons. A total of 27% of the non-traumatic cohort needed revision surgery. Peripheral vascular disease (PVD) (72%), atherosclerosis (69%), diabetes (42%), arterial hypertension (38%), overweight (BMI > 25), initial gangrene (47%), sepsis (19%), age > 68.2 years and nicotine abuse (17%) were set as relevant within this study and given a non-traumatic amputation score. Correlation analysis revealed delayed wound healing (confidence interval: 64.1% (47.18%; 78.8%)), a hospital length of stay before amputation of longer than 32 days (confidence interval: 32.3 (23.2; 41.3)), and a BKA amputation level (confidence interval: 74.4% (58%; 87%)) as risk factors for revision surgery after non-traumatic amputation. A combined score including all parameters was drafted to identify non-traumatic amputees at risk for revision surgery. Conclusions: Our results describe novel scoring systems for risk assessment for non-traumatic amputations and for revision surgery at non-traumatic amputations. It may be used after further prospective evaluation as an early-warning system for amputated limbs at risk of revision.

Reverse shoulder arthroplasty megaprosthesis for surgical management of severe proximal humeral bone loss

IntroductionShoulder arthroplasty in the setting of severe proximal humerus bone loss can be challenging. The purpose of this study was to evaluate the outcomes of a modular segmental megaprosthesis when implanted in a reverse configuration for complex primary arthroplasty, reconstruction at the time of oncologic resection, and revision shoulder arthroplasty. Materials and MethodsA Joint Registry Database was queried to identify all shoulder arthroplasties performed at a single institution using the Comprehensive Segmental Revision System® reverse shoulder arthroplasty (SRS-RSA, Zimmer Biomet, Warsaw, IN, USA). A retrospective review of electronic medical records and radiographs was performed to record demographic data, indication, outcomes, complications, and revision surgery. ResultsBetween February 2012 and October 2022, 76 consecutive SRS-RSA were implanted. An analysis of patients with minimum 12-month follow-up yielded 53 patients with a mean follow-up of 4.1 ± 2.43 years. Surgical complication rate in this cohort was observed in 41.5% (22/53) of cases. Overall, revision rate at final follow-up was 26.4% (14/53), with a significant difference between the primary and revision cohorts. The number of prior surgeries was a significant risk factor for revision surgery, with a hazard ratio of 1.789 (p<.001 95%CI [1.314-2.436]). When analyzing aseptic humeral loosening rates across study cohorts, a significant difference was found between the primary arthroplasty (0%, n = 0) and the revision arthroplasty cohorts (22.2%, n = 6) (p = 0.04). DiscussionReverse shoulder arthroplasty using a modular segmental megaprosthesis remains a reasonable salvage option for shoulder reconstruction in the setting of proximal humeral bone loss. Due to the substantial bone loss and soft tissue deficiencies typically present in these cases, surgeons should educate patients on the relatively high complication rate, particularly when used in the setting of a previous failed arthroplasty.

A Systematic Review and Meta-analysis of Risk Factors for the Increased Incidence of Revision Surgery After Arthroscopic Rotator Cuff Repair

Background: Approximately 90% of patients who undergo arthroscopic rotator cuff repair (RCR) are satisfied with their pain levels and function after surgery. However, a subset of patients experience continued symptoms that warrant revision surgery. Preoperative risk factors for RCR failure requiring revision surgery have not been clearly defined. Purpose: To (1) determine the rate of RCR failure requiring revision surgery and (2) identify risk factors for revision surgery, which will help surgeons to determine patients who are at the greatest risk for RCR failure. Study Design: Systematic review and meta-analysis; Level of evidence, 4. Methods: A systematic review and meta-analysis in accordance with PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines were performed. The initial search resulted in 3158 titles, and 533 full-text articles were assessed for eligibility. A total of 10 studies met the following inclusion criteria: (1) human clinical studies, (2) arthroscopic RCR, (3) original clinical research, and (4) evaluation of preoperative risk factors for revision. Results: After a full-text review, a total of 16 risk factors were recorded and analyzed across 10 studies. Corticosteroid injection was the most consistent risk factor for revision surgery, reaching statistical significance in 4 of 4 studies, followed by workers’ compensation status (2/3 studies). Patients with corticosteroid injections had a pooled increased risk of revision surgery by 47% (odds ratio, 1.44 [95% CI, 1.36-1.52]). Patients with workers’ compensation had a pooled increased risk of revision surgery by 133% (odds ratio, 2.33 [95% CI, 2.09-2.60]). Age, smoking status, diabetes, and obesity were found to be risk factors in half of the analyzed studies. Conclusion: Corticosteroid injections, regardless of the frequency of injections, and workers’ compensation status were found to be significant risk factors across the literature based on qualitative analysis and pooled analysis. Surgeons should determine ideal candidates for arthroscopic RCR by accounting for corticosteroid injection history, regardless of the frequency, and insurance status of the patient.

Femoral neck system versus multiple cannulated screws for the fixation of Pauwels classification type II femoral neck fractures in older female patients with low bone mass

BackgroundFemoral neck fractures in older adult patients are a major concern and often necessitate surgical intervention. This study compared the clinical outcomes of 2 surgical techniques: the femoral neck system (FNS) and cannulated compression screws (CCSs).MethodsA total of 40 female patients (mean age 73.50 ± 11.55 years) with femoral neck fractures of Pauwels classification type II and receiving surgical fixation between 2020 and 2022 were enrolled. The patients were categorized into an FNS group (n = 12) or a CCS group (n = 28), and surgical duration, intraoperative blood loss, length of hospital stay, and incidence of postoperative adverse events were analyzed.ResultsNo significant intergroup differences in demographic characteristics were discovered. The mean surgical duration for all patients was 52.88 ± 22.19 min, with no significant difference between the groups. However, the FNS group experienced significantly higher intraoperative blood loss (P = 0.002) and longer hospital stay (P = 0.023) than did the CCS group. The incidence of osteonecrosis was higher in the CCS group, whereas the incidence of nonunion or malunion was higher in the FNS group. The surgical method did not appear to be a significant risk factor. The main risk factor for revision surgery was longer duration until the first adverse event (P = 0.015).ConclusionThe FNS does not appear to provide superior surgical outcomes compared with CCSs in older adult women with Pauwels classification type II femoral neck fractures. A longer duration between surgical fixation and the first adverse event before stabilization of the fracture site may be a risk factor for revision surgery.

Translated article] Hip arthroscopy for femoroacetabular impingement with 10-year minimum follow-up

PurposeTo determine outcomes after hip arthroscopy (HA) for femoroacetabular impingement (FAI) at a minimun 10-year follow up and identified risk factors for revision surgery. MethodsRetrospective study of a prospective database of patients undergoing HA between January 2010 and December 2011. Rim chondral injuries were evaluated using the acetabular labral articular disruptions system (ALAD). Clinical and radiological data was obtained. Cumulative survival was estimated by Kaplan–Meier and a multivariate Cox proportional hazards model. ResultsSeventy-four patients were included in the study. Mean follow-up was 132 months. There was statistically significant improvement from preoperative PROs at latest follow-up. Seventeen patients (23.9%) underwent revision surgery. Odds ratio for revision surgery was 8.08 in a patient above 40 years old, 7.57 in a patient Tönnis greater than 1, and 4.25 in a patient ALAD 2–3. Cumulative survivorship rate at 10 years was 77.8%, with a 45.4% for patients with Tönnis grade greater than 1 in front of 85.2% for patients with Tönnis grade of 1 or less (p<.001). Risk factor for revision surgery was preoperative degree of osteoarthrosis (p=.02). ConclusionCumulative survivorship rate at 10 years was 45.4% for patients with Tönnis grade greater than 1 in front of 85.2% for patients with Tönnis grade of 1 or less (p<.001). Age, chondral injuries, and degree of osteoarthrosis would increase the risk for revision surgery.

Open Reduction And Internal Fixation of Tarsometatarsal (Lisfranc) Fracture Dislocations-Is Arthrodesis Necessary?

Controversy remains regarding the optimal management of tarsometatarsal (Lisfranc) fracture dislocations. Open reduction and internal fixation (ORIF) and ORIF with primary arthrodesis (PA) have been described in the treatment of these injuries, although adverse sequelae remain problematic. Previous work has yielded small cohorts with heterogenous results. We aimed to describe the outcomes of Lisfranc fracture dislocations managed with ORIF and/or PA to identify risk factors for complications, such as nonunion and revision surgery. A retrospective review of 206 consecutive tarsometatarsal fracture dislocations that underwent surgical repair between 2015 and 2021 was performed. Time to radiographic union was noted. Complications were recorded, including revision surgery, infection, symptomatic implant removal, posttraumatic arthritis, secondary arthrodesis, and nonunion. A comparative subgroup analysis of outcomes by treatment modality (ie, PA versus ORIF) and by injury severity (isolated injury versus concomitant lower extremity fracture) were performed. Logistic regression analysis was performed to assess factors associated with revision surgery. 104 patients met the inclusion criteria with a mean 13-month follow-up. Ninety-three (n = 93) patients underwent ORIF, and 11 patients underwent PA. Radiographic union was achieved in 94.2% of cases (98/104) at an average 106 days. Complications included superficial infection (3.8%), deep infection (7.7%), symptomatic implant removal (19.2%), posttraumatic arthritis (12.5%), secondary arthrodesis (4.8%), and nonunion (2.9%). No difference existed in the complication rates between those who underwent ORIF and those who underwent PA ( P = 0.50). Revision surgery rates were similar between patients who sustained isolated injuries and those with concomitant lower extremity fractures ( P = 0.31). Risk factors for revision surgery included open fractures (OR 4.01, P = 0.042) and previous psychiatric illness (OR 5.77, P = 0.016). The vast spectrum of injury in Lisfranc fracture dislocations makes uniform treatment challenging. In this large consecutive series, few failed to achieve union or required secondary arthrodesis. Open fractures and previous psychiatric illness portended worse clinical outcomes. ORIF without PA remains a viable treatment in these injuries. Level III, retrospective cohort study.

Taux de survie à 20 ans d’une prothèse totale de genou postérostabilisée mono-opérateur dans une population asiatique

IntroductionAs life expectancy has improved, the potential number of revision candidates is also expected to increase among patients who have undergone a total knee arthroplasty (TKA). The longevity of modern posterior stabilized knee prostheses after 20 years of use has not been well documented, especially in Asian populations that require a deeper flexion range due to a floor-based lifestyle. Hypothesis(1) The implant longevity regarding mechanical failures such as aseptic loosening and polyethylene (PE) wear would vary over a longer follow-up depending on the age groups; and (2) there would be unique risk factors for revision surgery in an Asian TKA cohort. Material and methodsWe conducted this age-stratified survival analysis in a consecutive series of 368 NexGen Legacy Posterior Stabilized (LPS) TKAs performed by a single surgeon. These cases were divided into four age groups (< 60 years, early 1960s, late 1960s, and ≥ 70 years). The implant longevity against aseptic mechanical failures was calculated using the Kaplan-Meier method. The revision surgery risk was evaluated using postoperative factors including a deep flexion capability(> 135°), and postoperative mechanical alignments. ResultsOverall survivorship was significantly lower in the youngest groups than other groups (Log-rank test, p=0.001). The cumulative 20-year implant longevity was more than 95% in the two oldest groups, but less than 60% in the youngest group. It was notable that the post-TKA implant longevity was not apparent up to 10 years between the age groups (p=0.073∼0.458). Aseptic loosening was observed with an earlier onset (3.1 to 18.9 years) trend than PE wear (9.8∼17.9 years), with most cases arising in the youngest groups. Flexion limitation and varus alignment were significant risks to aseptic loosening and PE wear (Cox proportional hazard regression: p=0.001 and 0.045, respectively). DiscussionA younger age (< 60 years), inability of postoperative deep flexion, and varus alignment were significant risk factors for aseptic loosening and PE wear after modern PS design in this Asian cohort. The difference in postoperative longevity affected by these factors was not obvious during the first 10 years but emerged over a second decade. Level of proofIII; retrospective cohort study.

Intracapsular tonsillectomy: setting a new standard.

Tonsillectomy is one of the most common surgical procedures performed on children in the United States. Since 2002, the intracapsular technique has been studied as a safer and less painful alternative to total tonsillectomy. Concerns have been raised, however, as to the potential for regrowth and long-term outcomes regarding this technique. Studies support the use of intracapsular tonsillectomy in the management of sleep disordered breathing, including in syndromic populations, as well as for tonsillitis. In addition, safety profiles continue to be improved over that of extracapsular dissection. While the incidence of regrowth ranges depending on the study and duration of follow up, it remains acceptably low. The most consistent independent risk factor for revision surgery includes young age. While total tonsillectomy is more thoroughly studied historically, an important absence in the literature is a definitive superiority over the intracapsular technique. With continued high-level studies, as well as additional examination of long-term outcomes, we should continue to see greater acceptance of intracapsular tonsillectomy as a standard of practice in a vulnerable population.

Social Determinants of Health Disparities Increase the Rate of Complications After Total Knee Arthroplasty

BackgroundFew studies have investigated whether social determinants of health disparities (SDHD), which include economic, social, education, health care, and environmental factors, identified through International Classification of Diseases (ICD) codes are associated with increased odds for poor health outcomes. We aimed to investigate the association between SDHD, identified through this novel methodology, as well as postoperative complications following total knee arthroplasty (TKA). MethodsUsing a national insurance claims database, a retrospective cohort analysis was performed. Patients were selected using Current Procedural Terminology and ICD codes for primary TKA between 2010 and 2019. Patients were stratified into 2 groups using ICD codes, those who had SDHD and those who did not, and propensity matched 1:1 for age, sex, a comorbidity score, and other comorbidities. After matching, 207,844 patients were included, with 103,922 patients in each cohort. Odds ratios (ORs) for 90-day medical and 2-year surgical complications were obtained using multivariable logistical regressions. ResultsIn patients who have SDHD, multivariable analysis demonstrated higher odds of readmission (OR): 1.12; P = .013) and major and minor medical complications (OR: 2.09; P < .001) within 90-days as well as higher odds of revision surgery (OR: 1.77; P < .001) and periprosthetic joint infection (OR: 1.30; P < .001) within 2-years. ConclusionThe SDHD are an independent risk factor for revision surgery and periprosthetic joint infection after TKA. In addition, SDHD is also an independent risk factor for all-cause hospital readmissions and both minor and major complications. Level of EvidenceIII.

Artroscopia de cadera como tratamiento del choque femoroacetabular con seguimiento mínimo de 10 años

PurposeTo determine outcomes after hip arthroscopy (HA) for femoroacetabular impingement (FAI) at a minimun 10-year follow up and identified risk factors for revision surgery. MethodsRetrospective study of a prospective database of patients undergoing HA between January 2010 and December 2011. Rim chondral injuries were evaluated using the acetabular labral articular disruptions system (ALAD). Clinical and radiological data was obtained. Cumulative survival was estimated by Kaplan–Meier and a multivariate Cox proportional hazards model. ResultsSeventy-four patients were included in the study. Mean follow-up was 132 months. There was statistically significant improvement from preoperative PROs at latest follow-up. Seventeen patients (23.9%) underwent revision surgery. Odds ratio for revision surgery was 8.08 in a patient above 40 years old, 7.57 in a patient Tönnis greater than 1, and 4.25 in a patient ALAD 2-3. Cumulative survivorship rate at 10 years was 77.8%, with a 45.4% for patients with Tönnis grade greater than 1 in front of 85.2% for patients with Tönnis grade of 1 or less (P<.001). Risk factor for revision surgery was preoperative degree of osteoarthrosis (P=.02). ConclusionCumulative survivorship rate at 10 years was 45.4% for patients with Tönnis grade greater than 1 in front of 85.2% for patients with Tönnis grade of 1 or less (P<.001). Age, chondral injuries, and degree of osteoarthrosis would increase the risk for revision surgery.

Endoscopic Versus Open Carpal Tunnel Surgery: Risk Factors and Rates of Revision Surgery

The purpose of our study was to compare the 1-year revision surgery rates and outcomes of open versus endoscopic carpal tunnel release. Our hypothesis was that, compared to open release, endoscopic carpal tunnel release was an independent risk factor for revision surgery within 1-year. This was a retrospective cohort study of 4338 patients undergoing isolated endoscopic or open carpal tunnel release. Demographic data, medical comorbidities, surgical approach, need for revision surgery, hand dominance, history of prior injection, and Patient Reported Outcomes Measurement Information System upper extremity (UE), pain interference (PI) and physical function scores were analyzed. Multivariable analysis was used to identify the risk factors for revision surgery within one year of the index procedure. In total, 3280 patients (76%) underwent open and 1058 (24%) underwent endoscopic carpal tunnel release. Within one year of the index procedure, 45 patients required revision carpal tunnel release. The average time to revision was 143 days. The rate of revision carpal tunnel release in the open group was 0.71% compared to 2.08% in the endoscopic group. Multivariable analysis demonstrated that endoscopic surgery, male sex, cubital tunnel syndrome, tobacco use, and diabetes were associated independently with revision surgery. In this study, we found that endoscopic carpal tunnel release was associated independently with a 2.96 times greater likelihood of requiring revision carpal tunnel release within one year, compared to open carpal tunnel release. Male sex, concurrent cubital tunnel syndrome, tobacco use, and diabetes also were associated independently with greater risk of needing revision carpal tunnel release within one year. Prognostic II.

Twenty-year survivorship cohort study of total knee arthroplasty in Asian patient using a single posterior-stabilized implant performed by a single surgeon

IntroductionAs life expectancy has improved, the potential number of revision candidates is also expected to increase among patients who have undergone a total knee arthroplasty (TKA). The longevity of modern posterior stabilized knee prostheses after 20 years of use has not been well documented, especially in Asian populations that require a deeper flexion range due to a floor-based lifestyle. HypothesisFirstly, the implant longevity regarding mechanical failures such as aseptic loosening and polyethylene (PE) wear would vary over a longer follow-up depending on the age groups; and secondly there would be unique risk factors for revision surgery in an Asian TKA cohort. Material and methodsWe conducted this age-stratified survival analysis in a consecutive series of 368 NexGen Legacy Posterior Stabilized (LPS) TKAs performed by a single surgeon. These cases were divided into four age groups (< 60 years, early 60s, late 60s, and ≥ 70 years). The implant longevity against aseptic mechanical failures was calculated using the Kaplan-Meier method. The revision surgery risk was evaluated using postoperative factors including a deep flexion capability (> 135̊), and postoperative mechanical alignments. ResultsOverall survivorship was significantly lower in the youngest groups than other groups (Log-rank test, p=0.001). The cumulative 20-year implant longevity was more than 95% in the two oldest groups, but less than 60% in the youngest group. It was notable that the post-TKA implant longevity was not apparent up to 10 years between the age groups (p=0.073∼0.458). Aseptic loosening was observed with an earlier onset (3.1 to 18.9 years) trend than PE wear (9.8∼17.9 years), with most cases arising in the youngest groups. Flexion limitation and varus alignment were significant risks to aseptic loosening and PE wear (Cox proportional hazard regression: p=0.001 and 0.045, respectively). DiscussionA younger age (< 60 years), inability of postoperative deep flexion, and varus alignment were significant risk factors for aseptic loosening and PE wear after modern PS design in this Asian cohort. The difference in postoperative longevity affected by these factors was not obvious during the first 10 years but emerged over a second decade. Level of proofIII; retrospective cohort study.

(349) Risk Factors for Revision of Inflatable Penile Prosthesis among an Ethnically Diverse Urban Population

Abstract Introduction Inflatable Penile Prosthesis (IPP) is an increasingly popular surgical treatment for refractory erectile dysfunction. However, there is a feared complication of infection or need for revision surgery. While the risk, treatment, and prevention of infections following IPP placement has been studied, few studies have reported on the risk factors for revision of implant, particularly among a diverse urban population with high rates of comorbid conditions. Objective To identify risk factors for revision surgery after primary IPP implantation among an ethnically diverse urban population with high rates of comorbid conditions. Furthermore, to aid informed consent of patients with refractory erectile dysfunction considering IPP surgery. Methods This study was a retrospective review of patients receiving IPP implantation surgery at a large urban hospital between January 2015 and December 2021. The primary outcome was revision or removal of IPP due to infection, device malfunction, or other. Patient characteristics, implant characteristics, intraoperative factors, and 30-day outcomes were compared between groups via Chi-squared, student’s t-test, or Mann-Whitney U test. A multivariate cox regression survival analysis was used to identify risk factors for revision surgery. A Kaplan-Meier survival curve was calculated for identified risk factors. Results A total of 489 patients received IPP implantation within the study period with 50 (10.2%) requiring revision surgery. Twenty-two (44.0%) patients had removal or revision of IPP due to infection, 19 (38.0%) due to device malfunctions, and 9 (18.0%) due to other reasons. The average time to revision surgery was 8.7 +/− 2.03 months. History of smoking was identified as a risk factor for revision surgery (p&amp;lt;.01), with 23% of active smokers and 13% of former smokers requiring revision surgery. Active smokers had a 3-fold higher risk of requiring revision surgery (OR: 3.23 [0.35-1.32], p&amp;lt;.01). The use of Arista hemostatic agent, as opposed to Surgicel or Evicel, resulted in a more than 50% reduction in the risk of revision surgery (p&amp;lt;.01). However, this finding fell out of our model when adjusted for smoking status (p=.072). Other characteristics such as age, BMI, race, comorbid conditions, length of surgery, implant size, use of surgical drain, and 30-day outcomes were not associated with risk of revision surgery. Conclusions There is a mounting body of evidence associating history of smoking with revision surgery and infection following IPP implantation surgery. Patients with active smoking history should be counseled on the up to 3-fold increased risk of requiring revision surgery. Additionally, further studies should assess the use of hemostatic agents such as Arista in reducing risk of revision surgery. Disclosure No

Minimum 10-Year Clinical Outcomes After Arthroscopic Capsulolabral Repair for Isolated Posterior Shoulder Instability

Background: Arthroscopic capsulolabral repair for posterior shoulder instability has been shown to improve patient-reported outcomes and return to sport at short-term and midterm follow-up, but long-term outcomes are unknown. Purpose: To determine the objective and subjective clinical outcomes of shoulder function after arthroscopic posterior shoulder stabilization at a minimum 10-year follow-up. Study Design: Case series; Level of evidence, 4. Methods: A total of 53 patients (55 shoulders) with unidirectional recurrent posterior shoulder instability who underwent arthroscopic capsulolabral repair were evaluated at a mean follow-up of 15.4 years. Outcomes such as the American Shoulder and Elbow Surgeons (ASES) shoulder score, Kerlan-Jobe Orthopaedic Clinic shoulder and elbow score, and subjective strength, stability, range of motion, and pain were evaluated preoperatively and postoperatively at a minimum 10-year follow-up. Outcomes from the same patient cohort were previously collected at 3.0-year follow-up and were evaluated for longitudinal analysis. Subgroup analyses for sport type (contact vs noncontact), position (thrower vs nonthrower), and revision versus nonrevision were performed. Risk factors for revision surgery based on magnetic resonance imaging findings, patient characteristics, and surgical findings were investigated. Results: Arthroscopic capsulolabral repair for posterior shoulder instability led to a statistically significant improvement on all outcome measures, with similar values at short-term (3.0-year) and long-term (15.4-year) follow-up. Across the total population, patients with 19 of 55 shoulders (35%) returned to sport at the same preinjury level, and patients with 33 of 55 shoulders (60%) returned to sport at some level. At long-term follow-up, patients with only 22% of shoulders were involved in the primary sport in which the injury was sustained, with patients with 28% of shoulders discontinuing sporting participation because of ongoing shoulder issues. Throwers trended toward lower Kerlan-Jobe Orthopaedic Clinic scores than nonthrowers both preoperatively (36.5 ± 22.8 vs 48.7 ± 22.9, respectively; P = .10) and postoperatively (57.4 ± 27.0 vs 73.5 ± 26.8, respectively; P = .09) but had similar improvements. Contact and noncontact athletes had similar preoperative and postoperative values, with equal improvements after surgery. With failure defined as revision surgery, an ASES score <60, or a stability value >5, 19 of 55 shoulders (35%) met failure criteria at final follow-up. Overall, 7 of 55 shoulders (13%) underwent revision surgery. At long-term follow-up, patients who underwent revision surgery had worse outcomes than those who did not undergo revision (ASES score: 53.1 ± 25.9 vs 81.8 ± 19.4, respectively; P < .001). An acute injury in the postoperative period (P < .001) and a smaller glenoid bone width on magnetic resonance imaging (P = .02) were the only identified risk factors for revision surgery. Conclusion: Arthroscopic capsulolabral repair for posterior shoulder instability was a durable treatment option that improved long-term shoulder pain and function and facilitated return to sport in the majority of patients at a mean follow-up of 15.4 years, although a notable proportion of patients met various criteria for failure.

Revision surgery following long lumbopelvic constructs for adult spinal deformity: prospective experience from two dedicated databases.

Pan Lumbar Arthodesis (PLA) are often required for Adult Spinal Deformity (ASD) correction, reducing significantly the compensatory capacity in case of postoperative sagittal malalignment. Few papers have investigated outcomes and complications in this vulnerable subset of patients. The objective of this study was to assess revision surgery rate for PLA in ASD, its risk factors and impact on clinical outcomes. Retrospective multicenter review of prospective ASD data from 7 hospitals covering Europe and Asia. ASD patients included in two prospective databases having a posterior instrumentation spanning the whole lumbar region with more than 2-years of follow-up were reviewed. Demographic, surgical, radiographic parameters and Health-Related Quality of Life (HRQoL) scores were analyzed. Univariate and multivariate regression models analyzed risk factors for revision surgery as well as surgical outcomes. Patients with Early versus Late and PJK versus Non-PJK mechanical complications were also compared. Out of 1359 ASD patients included in the database 589 (43%) had a PLA and 357 reached 2-years mark. They were analyzed and compared to non-PLA patients. Average age was 67 and 82% were females. 100 Patients (28.1%) needed 114 revision surgeries (75.4% for mechanical failures). Revised patients were more likely to have a nerve system disorder, higher BMI and worst immediate postoperative alignment (as measured by GAP Parameters). These risk factors were also associated with earlier mechanical complications and PJK. Deformity and HRQoL parameters were comparable at baseline. Non-revised patients had significantly better clinical outcomes at 2-years (SRS 22 scores, ODI, Back pain). Multivariate analysis could identify nerve system disorder (OR 4.8; CI 1.8-12.6; p = 0.001), postoperative sagittal alignment (GAP Score) and high BMI (OR 1.07; CI 1.01-1.13; p = 0.004) as independent risk factors for revisions. Revision surgery due to mechanical failures is relatively common after PLA leading to worse clinical outcomes. Prevention strategies should focus on individualized restoration of sagittal alignment and better weight control to decrease stress on these rigid constructs in non-compliant spines. Nerve system disorders independently increase revision risk in PLA. Prognosis.