Partial-thickness rotator cuff tears: a review of current literature on evaluation and management.

Rotator cuff disease is a common cause of shoulder pain for which partial-thickness rotator cuff tears occupy a significant proportion. Such tears are often difficult to diagnose and manage in the general clinic setting. A review of the available literature from well-known databases was performed in this study to provide a concise overview of partial-thickness rotator cuff tears to aid physicians in their understanding and management.

Both Adjustable and Fixed Loop Hamstring Tendon Graft Fixation Have Similar Clinical and Patient-Reported Outcomes in Anterior Cruciate Ligament Reconstruction.

Purpose: This study aims to compare the outcomes of fixed-loop device (FLD) vs adjustable-loop device (ALD) graft fixation with up to 2-year follow-up in patients undergoing primary anterior cruciate ligament reconstruction (ACLR) in a predominantly Asian setting. Methods: Prospectively collected outcome measures as well as clinical records of patients who underwent primary ACLR using either FLD or ALD fixation of hamstring tendon autograft performed by a single surgeon were reviewed. The surgeon in this study used a fixed-loop device from 2018 to 2019 and then changed to adjustable loop from 2019 to 2020. Suspensory fixation was performed on the femoral side, and aperture (interference screw) fixation was performed on the tibial side. Outcome measures included knee range of motion, KT-1000 arthrometer testing, Lysholm knee score, and Tegner activity scale. Patients were assessed preoperatively and postoperatively at regular intervals of 6, 12, and 24 months. Results: A total of 105 patients were identified. Forty-six were excluded due to incomplete follow-up data, so 59 patients with full 2-year follow-up were included in the final study group. Both groups (FLD vs ALD) were similar in demographics except for age (P = .042). Out of 105, there were 59 patients remaining in the study group with 2-year follow-up data. No significant differences were observed between the 2 groups at all respective testing intervals. Conclusions: FLDs and ALDs for suspensory fixation of hamstring tendon autograft in ACLR had similar clinical outcomes with a minimum of 2-year follow up. There is no evidence of graft loosening from loop lengthening. Level of Evidence: Level III, retrospective comparative trial.

Acute hospital-community hospital care bundle for elderly orthopedic surgery patients: A propensity score-matched economic analysis.

BACKGROUND: While Singapore attains good health outcomes, Singapore's healthcare system is confronted with bed shortages and prolonged stays for elderly people recovering from surgery in acute hospitals. An Acute Hospital-Community Hospital (AH-CH) care bundle has been developed to assist patients in postoperative rehabilitation. The core concept is to transfer patients out of AHs when clinically recommended and into CHs, where they can receive more beneficial dedicated care to aid in their recovery, while freeing up bed capacities in AHs. AIM: To analyze the AH length of stay (LOS), costs, and savings associated with the AH-CH care bundle intervention initiated and implemented in elderly patients aged 75 years and above undergoing elective orthopedic surgery. METHODS: A total of 862 1:1 propensity score-matched patients aged 75 years and above who underwent elective orthopedic surgery in Singapore General Hospital (SGH) before (2017-2018) and after (2019-2021) the care bundle intervention period was analyzed. Outcome measures were AH LOS, CH LOS, hospitalization metrics, postoperative 30-d mortality, and modified Barthel Index (MBI) scores. The costs of AH inpatient hospital stay in the matched cohorts were compared using cost data in Singapore dollars. RESULTS: Of the 862 matched elderly patients undergoing elective orthopedic surgery before and after the care bundle intervention, the age distribution, sex, American Society of Anesthesiologists classification, Charlson Comorbidity Index, and surgical approach were comparable between both groups. Patients transferred to CHs after the surgery had a shorter median AH LOS (7 d vs 9 d, P < 0.001). The mean total AH inpatient cost per patient was 14.9% less for the elderly group transferred to CHs (S$24497.3 vs S$28772.8, P < 0.001). The overall AH U-turn rates for elderly patients within the care bundle were low, with a 0% mortality rate following orthopedic surgery. When elderly patients were discharged from CHs, their MBI scores increased significantly (50.9 vs 71.9, P < 0.001). CONCLUSION: The AH-CH care bundle initiated and implemented in the Department of Orthopedic Surgery appears to be effective and cost-saving for SGH. Our results indicate that transitioning care between acute and community hospitals using this care bundle effectively reduces AH LOS in elderly patients receiving orthopedic surgery. Collaboration between acute and community care providers can assist in closing the care delivery gap and enhancing service quality.

An Early Periprosthetic Fracture of a Cementless Oxford Unicompartmental Knee Arthroplasty: Risk Factors and Mitigation Strategies.

INTRODUCTION: The cementless Oxford partial knee arthroplasty is associated with low perioperative complications and good long-term survival rates. However, perioperative fractures remain a serious morbidity for patients. CASE REPORT: This case report describes an early post-operative tibial periprosthetic fracture through the keel slot, which we believe may be contributed by the deep implant keel design and the presence of a narrow metaphysis in the Asian knee. The patient subsequently underwent a revision total knee replacement and fixation of the periprosthetic fracture. CONCLUSION: This paper discusses the ways to identify patients at high risk of developing periprosthetic fractures and to minimize such occurrences, including adopting a modified tibial preparation, doing precise saw cuts, and considering a cemented tibial implant.

Anterior Cruciate Ligament Surgery Performed Less Than 3 Weeks After Injury Is Not Inferior to Delayed Surgery.

Performing anterior cruciate ligament (ACL) surgery in the immediate period after injury is controversial. However, there may be instances where the opportunity cost of delayed surgery for the patient may be unacceptable. Concomitant meniscus injuries may also prevent the patient from regaining range of motion in the preoperative period. Every week that surgery is delayed may increase pain and impair mobility for this group of patients. We investigate the functional and clinical outcomes in patients with ACL surgery in the immediate 3-week period following ACL injury. A cohort study was performed to compare the outcome of early ACL (less than 3 weeks after injury) and late ACL surgery (more than 3 weeks after surgery). A total of 58 patients were followed up at fixed time points over a 2-year period. Clinical measurements (range of motion and knee laxity scores) and functional outcome scores (International Knee Documentation Committee, Lysholm's Knee and Tegner's scores) were used to document outcomes over time. The mean time to surgery from the time of injury in the early ACL surgery group was 2 weeks (standard deviation [SD] = 0.45) and the 20 weeks (SD = 9.64) in the late ACL surgery group. The absence or presence of meniscal injuries had no significant effect on the improvement over time for both groups of patients (p > 0.05). Patients in the early ACL group had faster rates of improvement for clinical measurements and functional outcome scores but had started out initially with poorer outcomes at baseline. However, both groups had comparable outcomes (p > 0.05) at the 1- and 2-year mark postsurgery. Patients in both groups had no adverse outcomes. ACL Surgery within 3 weeks of injury (2 weeks SD = 0.45) is safe and has comparable outcomes compared to patients with delayed surgery (20 weeks SD = 9.64).

Superior Postoperative Stability and Functional Outcomes With Anteromedial Versus Transtibial Technique of Single-Bundle Autologous Hamstring Anterior Cruciate Ligament Reconstruction: A Meta-analysis of Prospective Randomized Controlled Trials.

PURPOSE: The aim of this meta-analysis was to compare the postoperative stability and functional outcomes of anteromedial (AM)- and transtibial (TT)-based single-bundle hamstring anterior cruciate ligament (ACL) reconstruction techniques. METHODS: A meta-analysis comparing the outcomes of single-bundle hamstring ACL reconstruction using the AM and TT techniques was performed. Prospective randomized controlled trials identified from searches of PubMed, Cochrane, and Embase were included in this review. The outcome measures analyzed included postoperative Lachman test and pivot-shift test results, side-to-side difference, International Knee Documentation Committee (IKDC) score, Lysholm score, and Tegner activity score. RESULTS: A total of 7 randomized controlled trials (654 patients) were included in this review. The AM technique, compared with the TT technique, resulted in superior postoperative stability based on the negative Lachman test rate (risk ratio [RR], 1.12; 95% confidence interval [CI], 1.01 to 1.24; P = .03; 95% prediction interval [PI], 0.32 to 3.46), negative pivot-shift test rate (RR, 1.16; 95% CI, 1.06 to 1.28; P = .002; 95% PI, 0.40 to 2.88), and side-to-side difference (weighted mean difference [WMD], -0.32 mm; 95% CI, -0.48 to -0.16; P < .0001; 95% PI, -0.55 to -0.09). Likewise, the AM technique contributed to superior postoperative functional outcomes based on the proportion of IKDC grade A findings (RR, 1.16; 95% CI, 1.02 to 1.32; P = .03; 95% PI, 0.40 to 2.83) and the Lysholm score (WMD, 0.82; 95% CI, 0.23 to 1.41; P = .007; 95% PI, -0.22 to 1.86). However, the AM and TT techniques had comparable subjective IKDC scores (WMD, 0.98; 95% CI, -0.91 to 2.88; P = .31; 95% PI, -3.18 to 5.14) and Tegner activity scores (WMD, 0.32; 95% CI, -0.23 to 0.86; P = .25; 95% PI, -3.84 to 4.48). CONCLUSIONS: The AM method of single-bundle hamstring ACL reconstruction results in superior postoperative stability and functional outcomes compared with the TT method. LEVEL OF EVIDENCE: Level I, systematic review of Level I studies.

Routine Preoperative Group Crossmatching and Postoperative Check Hemoglobin Is not Necessary in Patients Undergoing Total Knee Arthroplasty.

This study aims to find out if routine preoperative group crossmatch and postoperative check hemoglobin for total knee arthroplasty (TKA) patients is necessary. A retrospective analysis was performed on patients who underwent unilateral TKAs for osteoarthritis from January 1, 2004 to December 31, 2014. The main outcome measures were postoperative hemoglobin levels and transfusion requirements. Patients' demographics, comorbidities, laboratory results, and surgical details were analyzed. A total of 955 TKAs were included in this study (males = 207, females = 748; mean age = 66.1 years, standard deviation [SD] = 7.7). A total of 79 (8.27%) cases required postoperative blood transfusion, and the crossmatch-transfusion ratio was 17.5. Significant predictors for postoperative transfusion included lower preoperative hemoglobin levels (p < 0.001) and advanced age (p < 0.001). Receiver operating characteristic (ROC) curve and Youden's Index analyses identified the preoperative hemoglobin cut-off value for females to be 12.1 g/dL (relative risk (RR): 5.65, p < 0.001) in predicting postoperative blood transfusion requirement, and 12.4 g/dL (RR: 11.71, p < 0.001) for males. For age, the identified cut-off value was 68 years (RR: 3.18, p < 0.001). The largest decline in hemoglobin levels was noted on postoperative day (POD) 3 (31.8%), and smallest on POD 1 (18.8%). The postoperative transfusion requirements in TKA are low and do not justify routine perioperative blood investigations. However, these investigations should be reserved for patients with the identified risk factors, in particular advancing age (68 years and above) and lower preoperative hemoglobin (below or equal to 12.1 and 12.4 g/dL for females and males, respectively). In the event that postoperative hemoglobin level needs to be checked, it should be performed beyond the first POD.

Is chemoprophylaxis required after total knee and total hip arthroplasty in the Asian population? A systematic review and network meta-analysis.

INTRODUCTION: Although chemoprophylaxis against venous thromboembolism (VTE) after Total Joint Arthroplasty (TJA) is commonly practiced, epidemiology studies have shown Asians have a much lower incidence of VTE. The authors aim to investigate if chemoprophylaxis is really necessary in the Asian population undergoing TJA. MATERIAL AND METHODS: Literature searched was conducted for randomized controlled trials or quasi-experimental studies investigating efficacy and/or safety of chemoprophylaxis for TJA without language restrictions. Network meta-analysis, comparing the incidence of 'VTE to be treated', 'VTE not to be treated', 'Minor bleeding', and 'Major bleeding' amongst the different interventions was performed using multivariate meta-regression model. RESULTS: 38 studies (11,769 patients) were included. Total incidence of deep vein thrombosis (DVT) and pulmonary embolism (PE) were 14.2% and 0.73% respectively. For outcome on efficiency, edoxaban, low-molecular-weight-heparin (LMWH), fondaparinux, and enoxaparin showed significantly lower Risk Ratio (RR) for 'VTE to be treated' compared to Control/Placebo. Although no interventions showed increased incidence of major bleeding, LMWH and fondaparinux showed higher RR for minor bleeding. Enoxaparin displayed the best efficacy and safety profile. Total incidence of symptomatic DVT in studies involving enoxaparin was 1.98% (1.07% in patients who received enoxaparin, 2.92% in Control/Placebo). Total incidence of proximal DVT was 2.93% (2.67% in patients who received enoxaparin, 3.11% in Control/Placebo). CONCLUSION: Asian population has a much lower incidence of VTE events after TJA compared to the Western population. Although Enoxaparin is still efficacious in reducing symptomatic and proximal DVT after TJA, its benefit-to-risk ratio is much lower than described in the Western literature.

From "business continuity" to "back to business" for orthopaedic surgeons during the COVID-19 pandemic.

The coronavirus disease 2019 (COVID-19) pandemic has led to unprecedented challenges to healthcare systems worldwide. Orthopaedic departments have adopted business continuity models and guidelines for essential and non-essential surgeries to preserve hospital resources as well as protect patients and staff. These guidelines broadly encompass reduction of ambulatory care with a move towards telemedicine, redeployment of orthopaedic surgeons/residents to the frontline battle against COVID-19, continuation of education and research through web-based means, and cancellation of non-essential elective procedures. However, if containment of COVID-19 community spread is achieved, resumption of elective orthopaedic procedures and transition plans to return to normalcy must be considered for orthopaedic departments. The COVID-19 pandemic also presents a moral dilemma to the orthopaedic surgeon considering elective procedures. What is the best treatment for our patients and how does the fear of COVID-19 influence the risk-benefit discussion during a pandemic? Surgeons must deliberate the fine balance between elective surgery for a patient's wellbeing versus risks to the operating team and utilization of precious hospital resources. Attrition of healthcare workers or Orthopaedic surgeons from restarting elective procedures prematurely or in an unsafe manner may render us ill-equipped to handle the second wave of infections. This highlights the need to develop effective screening protocols or preoperative COVID-19 testing before elective procedures in high-risk, elderly individuals with comorbidities. Alternatively, high-risk individuals should be postponed until the risk of nosocomial COVID-19 infection is minimal. In addition, given the higher mortality and perioperative morbidity of patients with COVID-19 undergoing surgery, the decision to operate must be carefully deliberated. As we ramp-up elective services and get "back to business" as orthopaedic surgeons, we have to be constantly mindful to proceed in a cautious and calibrated fashion, delivering the best care, while maintaining utmost vigilance to prevent the resurgence of COVID-19 during this critical transition period. Cite this article: Bone Joint Open 2020;1-6:222-228.

Should long head of biceps tenodesis or tenotomy be routinely performed in arthroscopic rotator cuff repairs?

PURPOSE: The long head of the biceps tendon (LHBT) lesions are frequently associated with partial or complete rotator cuff tears (RCTs), but controversy revolves around their optimal surgical management. METHODS: Hence this article aims to review the current literature available on the role of biceps surgery in rotator cuff surgery and whether it should be routinely performed in rotator cuff repairs. RESULTS: Furthermore, we also discuss the advantages and drawbacks of tenotomy or tenodesis of LHBT in rotator cuff surgery. CONCLUSION: We conclude this article with recommendations for surgeons performing rotator cuff repairs and future research in this area.

Rupture of the long head of the biceps brachii tendon near the musculotendinous junction in a young patient: A case report.

We report an unusual case of the long head of the biceps brachii tendon rupture near the musculotendinous junction in a young patient. The injury occurred in a young athlete during sports competition. The clinical presentation, surgical treatment, and technique with tenodesis using a unicortical button of the ruptured tendon were presented. The post-surgical recovery was uneventful, and the patient returned to sports in 6 mo. The treatment approach and surgical technique of the long head of biceps brachii rupture was reviewed and discussed. In conclusion, surgical treatment of the long head of the biceps brachii tendon rupture with unicortical button tenodesis resulted in a favorable outcome in a young athlete.

Large Infected Femoral Cystic Swelling after Anterior Cruciate Ligament Reconstruction through Transportal Technique.

INTRODUCTION: Large cystic swellings in the knee are a rare complication of anterior cruciate ligament (ACL) reconstruction surgery. Most cystic swellings in the literature arise from the tibia; femoral cystic swellings which are clinically significant and infected are thus extremely rare. Little is known about the etiology of such cystic swellings post-ACL reconstruction, and there are no standardized protocols for their treatment. CASE PRESENTATION: Our patient presented 6 months post-ACL reconstruction, with a large swelling over the lateral aspect of the femur in the operated knee. His presentation presented a clinical dilemma: On the one hand, he presented with a large cystic swelling adjacent to the knee, but had only vague knee pain with no significant joint effusion and no fever or other constitutional symptoms; while on the other, his swelling was significantly large and his imaging findings were worrisome. This cystic swelling turned out to be an infected cyst arising from the tissue adjacent to the femoral tunnel. We present a rare complication of ACL reconstruction and discuss the possible causes of such large cystic swellings. We also discuss the management of large infected cysts post-ACL reconstruction. CONCLUSION: Large, infected femoral cyst post-ACL reconstruction is rare and requires appropriate clinical assessment and management. It is important to ascertain whether they are associated with intra-articular infections/septic arthritis. If there is no septic arthritis, these swellings can be treated with simple surgical debridement and antibiotics and retention of ACL graft. The long-term outcomes of graft retention in these patients are excellent.

Ensuring Business Continuity of Musculoskeletal Care During the COVID-19 Pandemic: Experience of a Tertiary Orthopaedic Surgery Department in Singapore.

On February 8, 2020, Singapore raised its Disease Outbreak Response System Condition (DORSCON) level to Orange, indicating that coronavirus 2019 (COVID-19) was a severe disease with high human transmissibility. Using lessons learned from the severe acute respiratory syndrome (SARS) outbreak in 2003, the orthopaedic surgery department at Singapore General Hospital, a tertiary-level referral center, was prepared to handle this pandemic through business-continuity planning. The business that we are referring to is the "business" of orthopaedic surgery, encompassing clinical care, education, research, and administration. There is a lack of literature detailing business-continuity plans of surgical departments during pandemics, with new guidelines being developed. A large proportion of orthopaedic work, such as cases of fracture and infection, cannot be postponed. Even elective surgeries cannot be postponed indefinitely as it could result in detriment to the quality of life of patients. The aim of this article is to detail the business-continuity plans at our institution that allowed the delivery of essential musculoskeletal care through personnel segregation measures during the COVID-19 pandemic. Strategies to ensure the provision of timely medical intelligence, the reduction of nonessential ambulatory visits and surgical procedures, ensuring the safety and morale of staff, and continuing education and research efforts were paramount. As the COVID-19 pandemic unfolds, our posture needs to constantly evolve to meet new challenges that may come our way. Our existing business-continuity plan is not perfect and may not be applicable to smaller hospitals. There is conflict between envisioned normalcy, remaining economically viable as an orthopaedic department, and fulfilling training requirements, and educating the next generation of orthopaedic surgeons on the one hand and the need for segregation, workload reduction, virtual education, and social distancing on the other. Orthopaedic surgeons need to strike a balance between business continuity and adopting sustainable precautions against COVID-19. We hope that our experience will aid other orthopaedic surgery departments in adapting to this new norm, protecting their staff and patients, managing staff morale, and allowing the continuation of musculoskeletal care during the COVID-19 pandemic.

Post-operative non-steroidal anti-inflammatory drugs do not affect clinical outcomes of rotator cuff repair.

BACKGROUND: The administration of non-steroidal anti-inflammatory drugs (NSAIDs) to patients is thought to impair rotator cuff healing and clinical outcomes. METHODS: 36 patients who underwent rotator cuff repair were divided into 3 groups based on their post-operative analgesia regimes. RESULTS: At 4.4 years postoperative, there was significant improvement in SST and UCLA scores (p < 0.001). There were no significant differences in post-operative clinical outcome scores between the groups (p > 0.05). Administration of NSAIDs and duration of their use did not influence outcomes of rotator cuff repair (p = 0.151). CONCLUSION: NSAIDs has no significant influence on clinical outcomes of rotator cuff repair.

Recurrent surgical site infection after anterior cruciate ligament reconstruction: A case report.

BACKGROUND: Surgical site infections following anterior cruciate ligament (ACL) reconstruction are an uncommon but potentially devastating complication. In this study, we present an unusual case of recurrent infection of the knee after an ACL reconstruction, and discuss the importance of accurate diagnosis and appropriate management, including the issue of graft preservation versus removal. CASE SUMMARY: A 33-year-old gentleman underwent ACL reconstruction using a hamstring tendon autograft with suspensory Endobutton fixation to the distal femur and an interference screw fixation to the proximal tibia. Four years after ACL reconstruction, he developed an abscess over the proximal tibia and underwent incision and drainage. Remnant suture material was found at the base of the abscess and was removed. Five years later, he re-presented with a lateral distal thigh abscess that encroached the femoral tunnel. He underwent incision and drainage of the abscess which was later complicated by a chronic discharging sinus. Repeated magnetic resonance imaging revealed a fistulous communication between the lateral thigh wound extending toward the femoral tunnel with suggestion of osteomyelitis. Decision was made for a second surgery and the patient was counselled about the need for graft removal should there be intra-articular involvement. Knee arthroscopy revealed the graft to be intact with no evidence of intra-articular involvement. As such, the decision was made to retain the ACL graft. Re-debridement, excision of the sinus tract and removal of Endobutton was also performed in the same setting. Joint fluid cultures did not grow bacteria. However, tissue cultures from the femoral tunnel abscess grew Enterobacter cloacae complex, similar to what grew in tissue cultures from the tibial abscess five years earlier. In view of the recurrent and indolent nature of the infection, antibiotic therapy was escalated from Clindamycin to Ertapenem. He completed a six-week course of intravenous antibiotics and has been well for six months since surgery, with excellent knee function and no evidence of any further infection. CONCLUSION: Prompt and accurate diagnosis of surgical site infection following ACL reconstruction, including the exclusion of intra-articular involvement, is important for timely and appropriate treatment. Arthroscopic debridement and removal of implant with graft preservation, together with a course of antibiotics, is a suitable treatment option for extra-articular knee infections following ACL reconstruction.

Arthroscopic debridement of the degenerative knee - Is there still a role?

OBJECTIVES: The role of arthroscopic debridement in the painful degenerative knee is controversial. Studies have shown that arthroscopic surgery for knee osteoarthritis provides no additional benefit to optimized physical and medical therapy. There are however, limited studies on the management of the subgroup of significantly symptomatic patients who remain refractory to maximal conservative treatment and are poor candidates for knee replacement surgery.We propose that with careful patient selection, arthroscopic debridement can provide good symptomatic relief with sustained benefits in the degenerative knee. METHODS: We performed a retrospective, single-surgeon study of 180 consecutive knee arthroscopies performed in 169 patients, aged 40 years and above, who had mechanical symptoms affecting their daily lives and underwent arthroscopic debridement after failure of a minimum 2 months of optimized medical and physical therapy. Severity of the knee osteoarthritis on plain radiographs was assessed using the Kellgren-Lawrence classification.Functional and satisfaction scores were assessed using Oxford Knee Score, Koos Knee Survey, Short Form-36, Numeric Pain Rating Scale, and questions adapted from the North American Spine Society Questionnaire. RESULTS: Excellent functional outcomes and patient satisfaction were reported in the majority of patients over the follow-up timeframe of 2-8 years. The mean pre-operative Kellgren-Lawrence score was 2.02 (SD 0.580). Significant improvements compared to pre-operative scores were seen across all scoring systems tested. 90% of patients reported good to excellent results. CONCLUSION: Arthroscopic knee debridement can provide good symptomatic relief and sustained benefits in significantly symptomatic patients with early degenerative knees who have failed conservative management. This is most useful in patients with mechanical symptoms secondary to degenerative meniscal tears or chondral flaps, and those with symptomatic patellofemoral osteoarthritis.

Surgical site infection after primary total knee arthroplasty is associated with a longer duration of surgery.

PURPOSE: Surgical site infection (SSI) is a serious complication following total knee arthroplasty (TKA) leading to considerable morbidity. The incidence is reported to be up to 2%. Risk factors continue to be an area of intense debate. Our study aims to report the incidence of SSI and identify possible risk factors in our patients undergoing TKA. METHODS: Prospectively collected data for 905 patients who underwent elective unilateral TKA by a single surgeon from February 2004 to July 2014 were reviewed. Patient demographics and relevant co-morbidities such as diabetes and heart disease were analysed. The presence of superficial wound infections and/or prosthetic joint infections was included. RESULTS: The overall infection rate was 1.10% (10 of 905 patients). Six patients (0.66%) were diagnosed with superficial infections and four with PJI (0.44%). The mean operative duration for TKA with SSI was significantly longer at 90.5 ± 28.2 min, compared to 72.2 ± 20.3 min in TKA without SSI ( p = 0.03). All superficial infections occurred within the first month post-surgery and were self-limiting with oral antibiotics. The four patients with PJI required repeated procedures following TKA, including debridement, implant removal and/or revision arthroplasty. None of the 10 patients had a history of diabetes. There were no significant differences in demographics and co-morbidities between those who developed infection after TKA and those who did not. CONCLUSION: An overwhelming majority had good outcomes with only four deep infections resulting in revision surgery. We report that the risk of infection in TKA was significantly associated with a longer operative duration.

Outcomes of arthroscopic capsular release for the diabetic frozen shoulder in Asian patients.

INTRODUCTION: Diabetic patients have been known to have a higher incidence of frozen shoulder. Arthroscopic capsular release has been described for diabetic frozen shoulder refractory to non-surgical treatment. We describe our single-surgeon experience of this procedure done in Asian patients presenting with diabetic frozen shoulder. RESULTS: Data were prospectively collected from 25 patients from 2007 to 2008, who underwent arthroscopic capsular release for frozen shoulder with diabetes mellitus. This included the University of California-Los Angeles (UCLA) Shoulder Score by an independent observer. Mean follow-up duration was 44.3 ± 22 months with the age of 57.3 ± 10.9 years at the time of surgery. Mean duration of symptoms prior to surgery was 8.9 ± 7.5 months. Ten right shoulders and 15 left shoulders were operated on. Arthroscopic capsular release was performed in the beach chair position with the aid of a 90° electrocautery hook, from the rotator interval to posterior capsule. Significant improvement was observed in the UCLA scores post-operatively (preoperative total score 15.8 ± 3.6 vs. post-operative 33.3 ± 2.5, p < 0.00), including all domains of pain (3.9 ± 1.8 vs. 9.4 ± 0.9, p < 0.00), function (4.8 ± 1.7 vs. 9.4 ± 1.4, p < 0.00), active forward flexion (2.6 ± 0.7 vs. 4.6 ± 0.6, p < 0.00) and satisfaction (0.0 ± 0.0 vs. 5.0 ± 0.0, p < 0.00). No significant correlation between duration of symptoms and UCLA scores. Significant improvement was observed in forward flexion (preoperative 100.4 ± 18.8° vs. post-operative 157.6 ± 15.9°, p < 0.00) and external rotation (preoperative 14.4 ± 6.34° vs. post-operative 63.8 ± 8.3°, p < 0.00). Although the duration of symptoms correlated significantly with preoperative forward flexion ( r = 0.443 and p < 0.027), there was no significant correlation with post-operative forward flexion ( r = 0.023 and p < 0.91). No axillary nerve palsy observed. CONCLUSION: The diabetic frozen shoulder can be treated favourably with arthroscopic capsular release and the duration of symptoms prior to surgery does not affect the outcomes.

Clinical Outcomes, Return to Sports, and Patient Satisfaction After Anterior Cruciate Ligament Reconstruction in Young and Middle-Aged Patients in an Asian Population-A 2-Year Follow-up Study.

PURPOSE: To compare the clinical outcomes of arthroscopic anterior cruciate ligament (ACL) reconstruction in young and middle-aged Asians. METHODS: A retrospective study was performed using prospectively collected data from a tertiary institution ACL registry. All Asian patients with ACL tears who underwent primary arthroscopic ACL reconstruction by a single surgeon between 2008 and 2014, with minimum 2-year follow-up, were included. Patients with previous knee surgery or multiligamentous knee injuries were excluded. Two groups were formed: young patients (YP) (age <30) and middle-aged patients (MP) (age >40). They were compared preoperatively and 6 months, 1 year, and 2 years postoperatively for demographics, knee range of motion, anterior laxity, Tegner level, Lysholm and International Knee Documentation Committee grade, ability to return to preinjury level of activity, and patient satisfaction. RESULTS: YP (n = 84) and MP (n = 22) had differences in mean age (YP = 23.1 years, range 18-29 years; MP = 46.4 years, range 41-59 years, P < .001), preinjury Tegner level (YP = 7.4, MP = 6.4, P = .005), and preoperative Lysholm scores (YP = 65.3, MP = 53.0, P = .034). The incidence of meniscal and chondral injuries was similar. Two years postoperatively, both groups had comparable knee range of motion and anterior laxity. The Tegner score was different (YP = 6.3, MP = 5.2, P = .028), but the proportion of patients returning to preinjury Tegner level (YP = 45.2%, MP = 46.9%, P = .812), Lysholm scores (YP = 92.5, MP = 93.8, P = .794), proportion of patients with knees rated International Knee Documentation Committee A/B (YP = 77.4%, MP = 81.8%, P = .777), and satisfaction levels (YP = 98.5%, MP = 94.1%, P = .370) were similar. There were no graft ruptures or reoperations. CONCLUSIONS: In an Asian, predominantly male population, the clinical outcomes of arthroscopic ACL reconstruction in YP and MP are equally good at 2-year follow-up. MP can benefit as much as younger patients from ACL reconstruction in terms of restoration of knee function and return to preinjury activity level, are equally satisfied with outcomes, and should not be excluded from surgery on the basis of age alone. LEVEL OF EVIDENCE: Level III, retrospective comparative study.