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OBJECTIVE To prospectively compare the functional outcome associated with cemented and uncemented hemiarthroplasty. DESIGN Prospective randomized control trial. SETTING University-affiliated level 1 trauma center. PATIENTS/PARTICIPANTS All individuals designated for hemiarthroplasty, older than 55 years, with a nonpathologic displaced femoral neck(More)
Anterior cruciate ligament (ACL) reconstruction surgery with the central third quadriceps tendon can yield a stable, high-functioning knee with little associated morbidity. Both the quadriceps tendon-patellar bone graft and the free tendon graft are reported to produce good to excellent outcomes at more than 2 years of follow-up. The decreased donor-site(More)
BACKGROUND All-inside meniscal repairs are performed with increasing frequency because of the availability of newly developed devices. A comparison of their biomechanical characteristics may aid physicians in selecting a method of meniscal repair. HYPOTHESIS All-inside meniscal repairs will be superior to their inside-out controls in response to cyclic(More)
OBJECTIVE To examine the danger to the superficial peroneal nerve during percutaneous screw placement in the distal holes of the 13-hole proximal tibia Less Invasive Stabilization System plate in a cadaver. DESIGN Anatomic study. SETTING Medical school anatomy laboratory. INTERVENTIONS Fourteen adult cadaveric lower extremities were used. A 13-hole(More)
PURPOSE The aim of this study was to assess the contact pressure, force, and area over time for 4 common arthroscopic rotator cuff repair techniques. METHODS The transosseous-equivalent, single-row, triangle double-row, and suture-chain transosseous repair techniques were used to repair a full-thickness tear of the supraspinatus in 16 cadaveric shoulders.(More)
BACKGROUND The width of the medial clear space often is used to determine the integrity of the deltoid ligament, the primary medial stabilizer of the ankle joint. The normal clinical relationship of the superior clear space to the medial clear space is not well described. This investigation sought to determine if the superior clear space constitutes an(More)
Computed tomography (CT) scans are often used to evaluate proximal humerus fractures. We conducted a study to determine if use of preoperative CT scans affects surgical decision-making with respect to proximal humerus fractures. Three board-certified orthopedic surgeons interpreted plain radiographs of 40 proximal humerus fractures and then CT scans with(More)
OBJECTIVES Cadaveric models of the shoulder evaluate discrete motion segments using the glenohumeral joint in isolation over a defined trajectory. The aim of this study was to design, manufacture and validate a robotic system to accurately create three-dimensional movement of the upper body and capture it using high-speed motion cameras. METHODS In(More)
HYPOTHESIS In this study, we aim to test whether scapular winging results in a significant change in glenohumeral translation in the initial phase of the throwing motion. METHODS Six shoulders underwent an abbreviated throwing motion (ATM) from late cocking to the end of acceleration by use of a validated robotic system. The intact specimens were tested(More)
BACKGROUND Supraspinatus tears are common in pitchers. However, the effect of these tears on glenohumeral (GH) mechanics is incompletely understood. PURPOSE/HYPOTHESIS To describe the effect of supraspinatus tears and repairs on GH kinematics during an abbreviated throwing motion using the intact shoulder girdle. The hypothesis was that supraspinatus(More)