Time-Dependent Change in Cartilage Repair Tissue Evaluated by Magnetic Resonance Imaging up to 2 years after Atelocollagen-Assisted Autologous Cartilage Transplantation: Data from the CaTCh Study.

Objective: To elucidate the time course of magnetic resonance imaging (MRI)-based morphological and qualitative outcomes after an atelocollagen-assisted autologous chondrocyte implantation (ACI) and to analyze the correlation between arthroscopic and MRI-based assessment.

Design: We included ACI recipients from a multicenter registration study (CaTCh [Cartilage Treatment in Chiba] study). Morphological (3-dimensional magnetic resonance observation of cartilage repair tissue: 3D-MOCART, MOCART2.

Influence of Age on Signal Intensity of Magnetic Resonance Imaging and Clinical Outcomes in Double-Bundle Anterior Cruciate Ligament Reconstruction: Comparisons Among Different Age Groups.

Background: Thus far, the clinical results of anterior cruciate ligament (ACL) reconstruction have been observed to be comparable between young and older patients. In contrast, age-related changes in the structural and mechanical properties of tendons used for autografts have been described. However, age-related changes associated with graft maturation remain poorly understood.

Knowledge of and experience with transgender players among soccer team staff: a cross-sectional questionnaire design.

Objectives: Transgender issues have become increasingly prominent in sports. However, knowledge of and experience with supporting transgender players across soccer team staff remain unclear. The objectives of this questionnaire-based study were to 1) clarify staff knowledge of transgender-related terminology; and 2) explore soccer team staff's awareness and experience with supporting transgender players.

Superior graft maturation after anatomical double-bundle anterior cruciate ligament reconstruction using the transtibial drilling technique compared to the transportal technique.

Purpose: To evaluate and compare the femoral tunnel aperture position, graft bending angle and the magnetic resonance imaging (MRI) graft signal intensity after anatomical double-bundle anterior cruciate ligament (ACL) reconstruction between transtibial and transportal drilling techniques of the femoral tunnel.

Methods: Eighty-seven patients who underwent anatomic double-bundle ACL reconstruction with hamstring tendon autograft between January 2012 and December 2014 were included in this retrospective study. Forty-one patients underwent reconstruction using a transportal technique (TP group) and 46 patients underwent reconstruction using a transtibial technique (TT group).

Huge Pseudoaneurysm of the Femoral Artery after Internal Fixation of Femoral Trochanteric Fracture.

Pseudoaneurysm is one of the most serious complications of femoral trochanteric fracture surgery. Since the rupture of pseudoaneurysm may lead to death, early detection is important. We report the case of an 80-year-old male who developed pain in the proximal thigh and severe swelling after internal fixation of a femoral trochanteric fracture with a hip nail.

Changes in the syndesmotic reduction after syndesmotic screw fixation for ankle malleolar fractures: One-year longitudinal evaluations using computer tomography.

Introduction: To evaluate time-dependent changes in the syndesmotic reduction after syndesmotic screw fixation and one year after screw removal for ankle malleolar fractures, and to assess whether the incidence of syndesmotic malreduction changes depending on the measurement method.

Methods: We assessed twenty patients who underwent syndesmotic screw fixation for ankle fractures. The syndesmotic screws were removed after six weeks of the fracture surgery.

A 15-year prospective epidemiological account of acute traumatic injuries during official professional soccer league matches in Japan.

Background: Few prospective epidemiological studies on soccer match injuries have collected continuous data using subjects from the same group.

Purpose: To investigate long-term injury-induced changes during official matches in the professional Japanese soccer league.

Study Design: Descriptive epidemiological study.

Incidence of injury among adolescent soccer players: a comparative study of artificial and natural grass turfs.

Objective: To investigate the incidence of acute injuries and soccer-related chronic pain from long-term training and during matches in adolescent players using natural grass turfs (NT) and artificial turfs (AT).

Design: Case-controlled prospective study.

Setting: Institutional-level Fédération Internationale de Football Association Medical Centre of Excellence.

Correlation between knee laxity and graft appearance on magnetic resonance imaging after double-bundle hamstring graft anterior cruciate ligament reconstruction.

Background: In recent years, double-bundle (anteromedial bundle [AMB], posterolateral bundle [PLB]) anterior cruciate ligament reconstruction has developed into an accepted practical surgical procedure; therefore, its efficacy needs to be established.

Hypothesis: Multiple-sliced 2-dimensional magnetic resonance imaging allows evaluation of each bundle separately. Both bundles are important for knee stability, and each bundle has a role in the prevention of knee instability.