Clinical efficacy of adductor canal block in medial open wedge high tibial osteotomy.

Background: To evaluate the effect of adductor canal block (ACB) on short-term postoperative outcomes in patients who underwent medial open-wedge high tibial osteotomy (MOWHTO) compared to that of a placebo.

Methods: 35 patients who underwent unilateral MOWHTO between 2017 and 2019 were prospectively reviewed and randomly divided into two groups: 19 patients who received a single-shot ACB and 16 patients who received a saline injection (a placebo group). Primary outcomes were (1) pain measured using the visual analog scale and range of motion, (2) patient satisfaction, (3) postoperative need for additional opioids, (3) quadriceps strength (the time to straight leg raising [SLR]), (4) clinical outcomes, and (5) complications.

Allogeneic Umbilical Cord Blood-Derived Mesenchymal Stem Cell Implantation Versus Microfracture for Large, Full-Thickness Cartilage Defects in Older Patients: A Multicenter Randomized Clinical Trial and Extended 5-Year Clinical Follow-up.

Background: There is currently no optimal method for cartilage restoration in large, full-thickness cartilage defects in older patients.

Purpose: To determine whether implantation of a composite of allogeneic umbilical cord blood-derived mesenchymal stem cells and 4% hyaluronate (UCB-MSC-HA) will result in reliable cartilage restoration in patients with large, full-thickness cartilage defects and whether any clinical improvements can be maintained up to 5 years postoperatively.

Study Design: Randomized controlled trial; Level of evidence, 1.

Change of joint-line convergence angle should be considered for accurate alignment correction in high tibial osteotomy.

Background: The alignment correction after high tibial osteotomy (HTO) is made both by bony correction and soft-tissue correction around the knee. Change of the joint-line convergence angle (JLCA) represents the soft-tissue correction after HTO, which is the angle made by a tangential line between the femoral condyles and the tibial plateau. We described the patterns of JLCA change and related factors after HTO and investigated the appropriate preoperative planning method.

The effect of interleukin-8 in the early stage after anterior cruciate ligament reconstruction with remnant preservation.

Purpose: We studied the effect of interleukin-8 (IL-8) as the factor for angiogenesis in the joint fluid of remnant-preserved anterior cruciate ligament reconstruction (RP-ACLR).

Materials And Methods: We measured 12 cytokines in joint fluid by multiplex assay and assessed the relationship between IL-8 and vascular endothelial growth factor (VEGF) concentrations. The signal intensity and mean sagittal diameter via postoperative magnetic resonance imaging (MRI) scans were evaluated and the stress X-ray image was analyzed at 3, 6, and 12 months after operation.

The mechanism and cause of anterior cruciate ligament tear in the Korean military environment.

Purpose: Anterior cruciate ligament (ACL) injury is very common but few studies have analyzed the injury mechanism and cause of ACL tear in a specific environment such as a military institution. The purpose of this study was to analyze the injury mechanism and cause of ACL injury in the military environment. Additionally, this study could provide outcomes that may aid future studies on prevention of ACL injury in military personnel.

Alignment changes after open-wedge high tibial osteotomy result in offloading in the patellofemoral joint: a SPECT/CT analysis.

Purpose: The patellofemoral (PF) joint may be adversely affected by medial open-wedge high tibial osteotomy (OWHTO). This study aimed to evaluate the PF compartmental changes using combined single-photon emission computed tomography (SPECT) and conventional computed tomography (CT) after OWHTO to provide clinical guidance regarding the PF joint pressure and force.

Methods: Patients with medial osteoarthritis and varus malalignment > 5° were treated using OWHTO.

Analysis of Mechanical Loading after Anatomic Anterior Cruciate Ligament Reconstruction Using Combined Single-Photon Emission Computerized Tomography and Conventional Computerized Tomography.

Purpose: This study was to evaluate changes of the mechanical loading pattern after anatomic anterior cruciate ligament (ACL) reconstruction by analyzing uptake patterns using combined single-photon emission computerized tomography and conventional computerized tomography (SPECT/CT).

Materials And Methods: On SPECT/CT, high signal intensity of the articular surface which shows biological activity and mean increase of mechanical loading was compared with that of the tibiofemoral shaft as a comparative signal. The proportion of positive signals was evaluated in all compartments of the operated knee.

Can osteoarthritic patients with mild varus deformity be indicated for high tibial osteotomy?

Background: Whether osteoarthritic patients with mild varus deformity can be indicated for high tibial osteotomy (HTO) is not established. We examined the preoperative characteristics and postoperative outcomes of HTO in patients with mild genu varum compared to patients with greater varus deformity.

Methods: Seventy-one patients who underwent HTO were included in this retrospective study.

Clinical and radiologic evaluation of medial epicondylar osteotomy for varus total knee arthroplasty.

Background: In varus total knee arthroplasty (TKA), a pathologic contracture of the medial soft tissue should be released for ligament balancing. A medial epicondylar osteotomy has been performed as an alternative method for this. The purpose of this study was to demonstrate the clinical and radiologic results of medial epicondylar osteotomy for varus TKA, focusing on the union type of osteotomy site.

A Randomized, Multicenter, Phase III Trial to Evaluate the Efficacy and Safety of Polmacoxib Compared with Celecoxib and Placebo for Patients with Osteoarthritis.

Background: The aim of this study was to evaluate the safety and analgesic efficacy of polmacoxib 2 mg versus placebo in a superiority comparison or versus celecoxib 200 mg in a noninferiority comparison in patients with osteoarthritis (OA).

Methods: This study was a 6-week, phase III, randomized, double-blind, and parallel-group trial followed by an 18-week, single arm, open-label extension. Of the 441 patients with knee or hip OA screened, 362 were randomized; 324 completed 6 weeks of treatment and 220 completed the extension.

The SPECT/CT Evaluation of Compartmental Changes after Open Wedge High Tibial Osteotomy.

Purpose: The purpose of this study was to evaluate compartmental changes using combined single-photon emission computerized tomography and conventional computerized tomography (SPECT/CT) after open wedge high tibial osteotomy (OWHTO) for providing clinical guidance for proper correction.

Materials And Methods: Analysis was performed using SPECT/CT from around 1 year after surgery on 22 patients who underwent OWHTO. Postoperative mechanical axis was measured and classified into 3 groups: group I (varus), group II (0°-3° valgus), and group III (>3° valgus).

Effects of health literacy on treatment outcome and satisfaction in patients with mallet finger injury.

Study Design: Prospective cohort.

Introduction: Patient comprehension of their injury, its treatment, and health care provider's instructions plays an important role in health management and recovery from trauma.

Purpose Of The Study: This study investigates the effects of health literacy (the ability to obtain, process, and understand health information needed to make appropriate health decisions) on treatment outcomes and satisfaction in patients with mallet finger injuries.

Effect of Metabolic Syndrome on the Outcome of Corticosteroid Injection for Trigger Finger: Matched Case-Control Study.

Purpose: To compare the efficacy of corticosteroid injections in treating trigger finger in patients with and without metabolic syndrome (MS).

Methods: Fifty-one patients with trigger finger and MS were matched for age and sex with 52 control patients without MS. All patients were treated with a single corticosteroid injection.

Posterior Shift of Contact Point between Femoral Component and Polyethylene in the LCS Rotating Platform Implant under Weight Bearing Condition.

Purpose: To analyze the contact mechanics of the femoral component and polyethylene of the Low Contact Stress rotating platform (LCS-RP) in nonweight bearing and weight bearing conditions using full flexion lateral radiographs.

Materials And Methods: From May 2009 to December 2013, 58 knees in 41 patients diagnosed with osteoarthritis and treated with total knee arthroplasty (TKA) were included in this study. TKA was performed using an LCS-RP knee prosthesis.

Concomitant posterior cruciate ligament injuries with direct injury-related patellar fractures.

Introduction: Posterior cruciate ligament (PCL) injuries and direct injury-related patellar fractures have similar causative factors. However, the mechanisms underlying these injuries differ. We aimed to evaluate the incidence and relationship between PCL injuries and direct injury-related patellar fractures.

Analysis of the Causes of Elevated C-Reactive Protein Level in the Early Postoperative Period After Primary Total Knee Arthroplasty.

Background: Measurement of C-reactive protein (CRP) levels as a screening test for acute periprosthetic joint infection has high sensitivity and low specificity. We performed the present study to analyze the causes of elevated CRP levels in the early postoperative period after primary total knee arthroplasty (TKA). This study is intended to help the postoperative care of patients through understanding the factors associated with postoperative elevation of CRP.

Effects of Metabolic Syndrome on the Outcome of Carpal Tunnel Release: A Matched Case-Control Study.

Purpose: To compare outcomes of carpal tunnel release in patients with or without metabolic syndrome.

Methods: In a prospective consecutive series, 35 patients with metabolic syndrome and surgically treated carpal tunnel syndrome (CTS) were age- and sex- matched with 37 control patients without metabolic syndrome. Grip, pinch strength, perception of touch with Semmes-Weinstein monofilament, and Boston Carpal Tunnel Questionnaires (BCTQ) were assessed preoperatively and at 3, 6, and 12 months postoperatively.

Anatomic Double-Bundle Anterior Cruciate Ligament Reconstruction Using an Outside-in Technique: Two- to Six-Year Clinical and Radiological Follow-up.

Purpose: We evaluated the clinical and radiological outcomes of double-bundle anterior cruciate ligament (ACL) reconstruction using an outside-in technique with a follow-up of two- to six-years, especially in terms of the sports activity level and radiological degeneration.

Materials And Methods: Sixty-seven patients who were available for a minimum two-year follow-up after double-bundle ACL reconstruction using an outside-in technique were retrospectively evaluated. The mean follow-up period was 43.

Restoration of the anatomic position during a meniscal allograft transplantation using pre-existing landmarks.

Introduction: Accurate sizing and positioning of a meniscal allograft is an important factor for successful outcomes of meniscal allograft transplantation. The objectives of this study were (1) to search a proper rotational landmark, (2) to determine the sagittal slope of meniscus, and, thus (3) to determine the meniscal positioning.

Materials And Methods: A total of 121 consecutive patients who underwent magnetic resonance imaging in the 3 months prior to the beginning of the study were selected.

Combined lateral femoral epicondylar osteotomy and a submeniscal approach for the treatment of a tibial plateau fracture involving the posterolateral quadrant.

Exposure of a tibial plateau fracture involving the posterolateral quadrant is challenging, and several approaches for treating these fractures have been introduced. However, these approaches may have limited applicability, and they can potentially cause neurovascular, musculotendinous, or ligamentous injury of the posterolateral corner. Lateral femoral epicondylar osteotomy has been used for meniscal transplantation, total knee arthroplasty, and the treatment of posterolateral articular disorders of the femur and tibia.

A randomized comparison of volar plate and external fixation for intra-articular distal radius fractures.

Purpose: To compare surgical outcomes of volar locking plates (VP) and external fixation (EF) (with or without intra-focal fixation) for AO-type C2 and C3 fractures of the distal radius.

Methods: From an initial group of 92 patients with AO-type C2 and C3 distal radius fractures who were enrolled in a prospective, randomized study comparing volar plate fixation with external fixation (with or without intra-focal fixation), 74 patients were studied. The researchers evaluated functional assessments (wrist range of motion, grip strength, and Michigan Hand Questionnaire) at each patient visit and measured radiographic assessment (radial inclination, volar tilt, ulnar variance, and articular congruity) at 12 months.

Factors associated with complex regional pain syndrome type I in patients with surgically treated distal radius fracture.

Purpose: Wrist fracture is considered a typical initiating trauma for complex regional pain syndrome type I (CRPS I). However, few studies have comprehensively evaluated factors associated with the occurrence of CRPS I after the surgical treatment of a distal radius fracture (DRF). This study evaluates the factors influencing the occurrence of CRPS I after the surgical treatment of a DRF.

Changes in patellofemoral alignment do not cause clinical impact after open-wedge high tibial osteotomy.

Purpose: The objectives of this study were (1) to evaluate the clinical and radiologic outcomes of open-wedge high tibial osteotomy focusing on patellofemoral alignment and (2) to search for correlation between variables and patellofemoral malalignment.

Methods: A total of 46 knees (46 patients) from 32 females and 14 males who underwent open-wedge high tibial osteotomy were included in this retrospective case series. Outcomes were evaluated using clinical scales and radiologic parameters at the last follow-up.

Effect of anxiety and catastrophic pain ideation on early recovery after surgery for distal radius fractures.

Purpose: To evaluate the effects of preoperative anxiety and catastrophic pain ideation on perceived disability and objective measures after distal radius fracture surgery.

Methods: A total of 121 patients with distal radius fractures treated with volar plate fixation were enrolled. The wrist range of motion (ROM), grip strength, and perceived disability as measured by the Michigan Hand Questionnaire (MHQ) score were assessed 4, 12, and 24 weeks after surgery.