Trends in Venous Thromboembolism and Chemoprophylaxis Utilization in Elective Total Knee Arthroplasty from 2011 to 2020.

INTRODUCTION: Venous thromboembolism (VTE) is a feared complication of joint arthroplasty, leading to recent clinical practice guidelines (CPGs) aimed at VTE prevention and prophylaxis. However, limited studies have examined national changes in practice regarding chemoprophylaxis and the resultant changes in VTE rates. The purpose of this study was to identify: 1) the temporal trends in thrombotic complications; and 2) changes in chemoprophylaxis utilization in patients undergoing elective TKA. METHODS: A retrospective study was conducted using a large all-payer claims dataset. Patients who underwent osteoarthritis-indicated TKA between 2011 and 2020 were identified. Annual rates of VTE, including deep vein thrombosis (DVT), and pulmonary embolism (PE), within 90 days of TKA were determined. Utilization patterns for postoperative aspirin and anticoagulant medications were observed. Temporal trends were analyzed with linear regression and the calculation of the cumulative annual growth rate (CAGR). Multivariable logistic regression was conducted to account for the effects of age and comorbidities. RESULTS: A total of 1,263,351 TKA patients were identified between 2011 and 2020. There were significant reductions in VTE rates (2.9% in 2011 to 1.8% in 2020), DVT rates (2.0% in 2011 to 1.3% in 2020), and PE rates (1.1% in 2011 to 0.6% in 2020). Postoperative utilization of aspirin increased from 5.9% in 2011 to 53.2% in 2020, whereas utilization of anticoagulants decreased from 94.1% in 2011 to 46.8% in 2020. Among anticoagulants, direct factor Xa inhibitors had the greatest increase in utilization (4.6 to 69.7%). The average reimbursement-associated with VTE after TKA decreased from $18,061 in 2011 to $7,835 in 2020. DISCUSSION: The incidence rate and economic burden of VTE after TKA have significantly declined since 2011. There has been a trend toward increased aspirin and direct oral anticoagulant utilization for postoperative chemoprophylaxis.

Preoperative weight loss before total hip arthroplasty negatively impacts postoperative outcomes.

BACKGROUND: Obesity adversely impacts outcomes of total hip arthroplasty (THA), leading surgeons to impose body mass index cutoffs for patient eligibility and encourage preoperative weight loss. This study aimed to determine if preoperative weight loss impacts outcomes of THA in the general patient population and if it mitigates poor outcomes in obese patients. METHODS: Patients who underwent THA from 2013-2020 were identified in the National Surgical Quality Improvement Program (NSQIP) database. Patients were stratified by weight loss of >10% of body weight over the preceding 6 months. We used multivariable linear and logistic regression models, adjusted for age, sex, race/ethnicity, and comorbidities, to examine the effect of significant preoperative weight loss on 30-day outcomes after THA in the general and obese patient populations. RESULTS: In the overall population, patients who lost significant weight preoperatively had significantly increased length of stay, were more likely to have a non-home discharge, return to the operating room, or be readmitted, and were more likely to experience numerous medical complications. In the obese population, patients who lost significant weight preoperatively had significantly increased length of stay and were more likely to require a transfusion or experience any medical complication. DISCUSSION: Rapid significant preoperative weight loss is not associated with improved postoperative outcomes after THA in the obese population and is associated with worse outcomes in the general population. Arthroplasty surgeons should balance these risks with the risks of obesity when advising patients about preoperative weight loss prior to THA. LEVEL OF EVIDENCE: III.

Single-Centre Experience Regarding the Use of Fibular Graft for Reconstruction after Resection of Grade III GCT of Distal Radius.

Background: A giant cell tumour (GCT) is a locally invasive benign tumour of bone in young adults. Treatment includes surgical resection as first-line or denosumab pharmacotherapy in inoperable patients. However, surgical resection of distal radius GCT has produced debatable functional outcomes. Here we study the use of fibular grafts for reconstruction of surgically resected GCT of the distal radius. Methods: A total of 11 patients having Grade III GCT of the distal radius were recruited for a retrospective single-centred study. Five underwent arthrodesis with fibular shaft graft and six received arthroplasty with the proximal fibula. Functional outcomes at 6 weeks, 6 and 12 months were measured by Mayo wrist score (MWS) (>51% = good) and Revised Musculoskeletal tumor society (MSTS) score (>15 = good). Results: At 6 weeks, mean MSTS score and MWS were 23.64 and 58.64% respectively, and the length of the fibular graft was a predictor for both MSTS score (p = 0.014) and MWS (p = 0.006). At 6 months, the mean MSTS and MWS were 26.36 and 76.82%, respectively. At 6 months, the surgical procedure was a predictor in MSTS score (p = 0.02) while MWS was predicted by length of graft (p = 0.02). At 12 months, MSTS score was 28.73, and MWS remained 91.82%. Length of the fibular graft was an insignificant predictor, but a significant risk factor was surgical procedure for MWS (p = 0.04) at 12 months. No variable was found significant for MSTS score. Conclusions: Resection along with reconstruction of Grade III GCT of the radius with fibular graft was found an optimal treatment option. Also, use of the fibular head grafts and shorter length grafts are predictors for better outcomes after surgery. Level of Evidence: Level IV (Therapeutic).

Role of denosumab before resection and reconstruction in giant cell tumors of bone: a single-centered retrospective cohort study.

BACKGROUND: Denosumab has been approved by Food and Drug Authority in 2013 for use in surgically unresectable Giant cell tumor (GCT) to achieve resectable tumor margins. The aim of this study is to investigate the functional outcome and surgical convenience with the use of neoadjuvant denosumab before resection and reconstruction in Campanacci grade III GCT. METHODS: We retrospectively reviewed 70 cases of Campanacci grade III GCT receiving resection and reconstruction between January 2014 and December 2019. They were stratified into two groups: one group of 29 patients received once-weekly denosumab 120 mg for 4-weeks before resection and reconstruction, while the other group of 41 patients did not receive denosumab before resection and reconstruction. Quality of life by musculoskeletal tumor society score where 0-7 means poor, 8-14 means fair, 15-22 means good; above 22 means excellent, incidence of tumor recurrence, intraoperative duration in minutes and postoperative positive margins were assessed for each cohort after 12 months follow-up. RESULTS: There was no significant difference in musculoskeletal tumor society score (25.75 vs. 27.41; P  = 0.178), incidence of recurrence (3.45% vs. 4.88%; P  < 0.001), and postoperative positive margins (10.34% vs. 4.88%; P  = 0.38) for both groups. However, the intraoperative duration (133.38 vs. 194.49; P  < 0.001) was significantly higher in the non-denosumab group compared with denosumab group. CONCLUSIONS: Neoadjuvant denosumab is equally effective considering postoperative functional outcomes and surgical convenience except intraoperative duration where it is highly helpful in saving the operating time duration. Easier identification, resection and lesser reconstruction are the key surgical convenience offered by neoadjuvant denosumab.