Late Manipulation under Anesthesia after Total Knee Arthroplasty: Improved Range of Motion and a Low Complication Rate.

The purpose of this study was to evaluate outcomes of late manipulation under anesthesia (MUA) for stiffness performed from ≥12 weeks to more than a year after primary total knee arthroplasty (TKA). A total of 152 patients receiving MUA ≥12 weeks after primary TKA from 2014 to 2021 were reviewed. The primary outcome measured was change in range of motion (ROM).

Bisphosphonate Use May be Associated With an Increased Risk of Periprosthetic Hip Fracture.

Background: Osteoporosis is common among patients undergoing primary total hip arthroplasty (THA). This study aimed to evaluate the effect of bisphosphonate treatment on osteoporotic patients undergoing primary THA.

Methods: Using a national database, 30,137 patients who had osteoporosis before primary elective THA were identified during 2010 to 2020.

Can Patients Accurately Recall their Preoperative Pain and Functional Scores Following Rotator Cuff Repair and Total Shoulder Arthroplasty?

Objectives: Accurate analysis of preoperative shoulder pain and function is important for understanding treatment efficacy and producing high-quality research. Oftentimes, preoperative patient-reported outcomes (PROs) are missing. Therefore the accuracy of recalled preoperative PROs may be important.

Dual-Mobility versus Large Femoral Heads in Revision Total Hip Arthroplasty: Interim Analysis of a Randomized Controlled Trial.

Background: This multicenter randomized controlled trial evaluated if dual-mobility bearings (DM) lower the risk of dislocation compared to large femoral heads (≥36 mm) for patients undergoing revision total hip arthroplasty (THA) via a posterior approach.

Methods: A total of 146 patients were randomized to a DM (n = 76; 46 mm median effective head size, range 36 to 59 mm) or a large femoral head (n = 70; twenty-five 36 mm heads [35.7%], forty-one 40 mm heads [58.

High rate of failure after revision extensor mechanism allograft reconstruction.

Background: Patients who fail initial extensor mechanism allograft (EMA) reconstruction for extensor mechanism disruption after total knee arthroplasty (TKA) are left with few options. This study evaluated outcomes in patients that underwent revision EMA reconstruction following a failed EMA.

Method: Ten patients that underwent revision EMA for failed index EMA with minimum 1-year follow-up were retrospectively reviewed.

Low Risk of Acute Iatrogenic Periprosthetic Joint Infection After Prosthetic Joint Aspiration.

Background: Synovial fluid analysis is an essential tool in diagnosing periprosthetic joint infection (PJI) after total knee arthroplasty (TKA). However, concern exists that aspiration may introduce infection into a noninfected joint. Therefore, the purpose of this study was to evaluate the incidence of iatrogenic PJI following diagnostic knee aspiration done within 6 months of the primary TKA.

Cementless Total Knee Arthroplasty is Associated With Early Aseptic Loosening in a Large National Database.

Background: Despite excellent longevity demonstrated in institutional studies, outcomes after cementless total knee arthroplasty (TKA) on a population level remain unknown. This study compares 2-year outcomes between cemented and cementless TKA using a large national database.

Methods: A large national database was used to identify 294,485 patients undergoing primary TKA from January 2015 to December 2018.

Elective Joint Arthroplasty Should be Delayed by One Month After COVID-19 Infection to Prevent Postoperative Complications.

Background: It remains unclear whether a history of recent COVID-19 infection affects the outcomes and risks of complications of total joint arthroplasty (TJA). The purpose of this study was to compare the outcomes of TJA in patients who have and have not had a recent COVID-19 infection.

Methods: A large national database was queried for patients undergoing total hip and total knee arthroplasty.

Short-Term Indwelling Foley Catheters Do Not Reduce the Risk of Postoperative Urinary Retention in Uncomplicated Primary THA and TKA: A Randomized Controlled Trial.

Background: The purpose of this randomized controlled trial was to determine whether a short-term Foley catheter (inserted in the operating room and removed upon arrival to the orthopaedic floor) would reduce the risk of postoperative urinary retention (POUR) in patients undergoing primary total hip (THA) and total knee arthroplasty (TKA).

Methods: Three hundred and eighty-eight patients undergoing inpatient primary TKA (n = 228) or THA (n = 160) with spinal anesthesia were randomized to receive a short-term Foley catheter (n = 194) or no Foley (n = 194). There were 143 male and 245 female patients.

Complications and costs of patellofemoral arthroplasty versus total knee arthroplasty.

Background: Patellofemoral arthroplasty (PFA) is an alternative to total knee arthroplasty (TKA) for the treatment of patellofemoral arthritis. Although PFA may preserve native kinematics and accelerate recovery, it has been associated with higher revision rates. The purpose of this study is to compare complication rates and costs between PFA and TKA.

Vitamin D Supplementation Prior to Total Knee Arthroplasty: A Randomized Controlled Trial.

Background: The purpose of this randomized controlled trial was to determine if a one-time dose of vitamin D prior to total knee arthroplasty improves function and patient-reported outcomes, while decreasing complications.

Methods: One hundred seven patients undergoing primary total knee arthroplasty were randomized to receive 50,000 international units vitamin D (57 patients) or placebo (50 patients) on the morning of surgery. Power analysis determined 45 patients were required in each cohort to detect a minimal clinically important difference of 6 points in the functional component of the 2011 version of the Knee Society Score (KSS), assuming an alpha of 0.