Functional results of navigated minimally invasive and conventional total knee arthroplasty: a comparison in bilateral cases.

This prospective study aimed to compare the clinical and radiologic results achieved using navigation-assisted minimally invasive surgery (NA-MIS) and conventional techniques in 42 patients who underwent bilateral total knee arthroplasty (TKA), with a minimum 1-year follow-up. Patients who underwent NA-MIS TKA showed better Hospital for Special Surgery (HSS) Scores and Western Ontario MacMaster (WOMAC) total scores for up to 6 months postoperatively than patients who underwent conventional TKA, and lower WOMAC pain score for up to 9 months postoperatively. Range of motion (ROM) was comparable in both groups at all times.

Kinematic study following double-bundle, anterior cruciate ligament reconstruction.

The purpose of this study was to evaluate tibiofemoral kinematics after double-bundle anterior cruciate ligament (ACL) reconstructions and compare them with those of successful single-bundle reconstructions and contralateral normal knees using open MR images. We obtained MR images based on the flexion angle without weight-bearing, from 20 patients with successful unilateral single-bundle (10 patients) and double-bundle (10 patients) ACL reconstructions with tibialis anterior allografts and a minimum 1-year follow-up. The MR images of the contralateral uninjured knees were used as normal controls.

Multiple osteotomies and intramedullary nailing with neck cross-pinning for shepherd's crook deformity in polyostotic fibrous dysplasia: 7 femurs with a minimum of 2 years follow-up.

Background: In polyostotic fibrous dysplasia, particularly in lesions of the proximal femur, pathological fracture and coxa vara deformity (including shepherd's crook deformity) are likely to develop and progress.

Patients And Methods: In 7 femurs with shepherd's crook deformity (5 patients), we performed intramedullary nailing by using multiple osteotomies and two screws crossing the femoral neck.

Results: Restoration of the neck shaft angle of the femur was obtained from an average of 92 degrees prior to surgery to 129 degrees after surgery.

In vivo stability of total knee arthroplasty using a navigation system.

The aim of this study was to evaluate in vivo stability for mediolateral laxity in extension and anteroposterior laxity in 90 degrees of flexion and to correlate these and the range of motion (ROM) in 42 total knee arthroplasties (TKA) performed using a navigation system, with a minimum 1-year follow-up. The following parameters were measured at the final follow-up: mediolateral laxity in extension and anteroposterior laxity in 90 degrees of flexion as determined by stress radiographs and a Telos arthrometer, modified HSS scores (excluding laxity and range of motion) and the range of motion (ROM). The mean modified HSS score was 82% of 82 maximum allowable points, and the mean postoperative ROM was 128.

Rising incidence of hip fracture in Gwangju City and Chonnam Province, Korea.

The purpose of study was to determine the incidence of hip fracture in 2001, to compare this with that of 1991, and to identify possible causes of change. Patients aged 50 yr or more living in Gwangju City and Chonnam Province, Korea, and who sustained a fracture of the hip during 2001 were investigated. Only patients who were admitted to hospitals for primary treatment of the first hip fracture were selected.