A 30-year follow-up study of rotational acetabular osteotomy for pre- and early-stage osteoarthritis secondary to dysplasia of the hip.

Aims: The objective of this study was to present the outcomes of rotational acetabular osteotomy (RAO) over a 30-year period for osteoarthritis (OA) secondary to dysplasia of the hip in pre- or early-stage OA.

Methods: Between September 1987 and December 1994, we provided treatment to 47 patients (55 hips) with RAO for the management of pre- or early-stage OA due to developmental hip dysplasia. Of those, eight patients (11 hips) with pre-OA (follow-up rate 79%) and 27 patients (32 hips) with early-stage OA (follow-up rate 78%), totalling 35 patients (43 hips) (follow-up rate 78%), were available at a minimum of 28 years after surgery.

Arthroscopic Treatment for Femoral Nerve Palsy Associated with Ganglion Cyst of the Hip: A Case Report.

Introduction: There are several case reports of nerve palsy caused by ganglions arising from the hip joint. We herein report the arthroscopic treatment of a patient who presented with femoral numbness due to the compression of the femoral nerve by a ganglion of the hip joint.

Case Report: A 61-year-old man presented with a 3-month history of increasing pain in his left groin, and numbness and radiating pain in the anterior and medial thigh caused by a ganglion cyst.

Healing potential of the cartilage correlates with location on the femoral head: a basic research using a rabbit model.

Purpose: The purpose of this study is to investigate whether healing potential of the femoral cartilage differs according to the site of injury in a rabbit, and whether poor potential of the cartilage repair correlates with the injured site which is not in contact with acetabulum. Furthermore, the efficacy of intraarticular injection of hyaluronic acid into the hip for the cartilage with lower healing potential was evaluated.

Methods: Male Japanese white rabbits were used in this study.

Enhancement of muscle repair using human mesenchymal stem cells with a magnetic targeting system in a subchronic muscle injury model.

Background: A magnetic cell targeting system was previously developed to promote the accumulation of transplanted cells in sites of injury in order to effectively treat injured tissues. However, the optimum time of exposure to the magnetic field and the strength of the magnetic force have not yet been clarified. In this study, we investigated the optimum conditions of the magnetic force required to retain iron-labeled human mesenchymal stem cells (hMSCs) at the site of transplantation for muscle repair in a subchronic skeletal muscle injury nude rat model.

Clinical and radiographical results of 179 thrust plate hip prostheses: 5-14 years follow-up study.

Introduction: The thrust plate hip prosthesis (TPP) is a bone-reserving prosthesis for cementless fixation at the metaphysis of the proximal femur. We retrospectively evaluated the results of 162 patients (179 hips) who underwent hip arthroplasty using TPP.

Patients And Methods: Eighty-three patients (87 hips) suffered from osteoarthritis of the hip joint (OA group), 79 patients (92 hips) from osteonecrosis of the femoral head (ON group).

Midterm results of femoral impaction bone grafting with an allograft combined with hydroxyapatite in revision total hip arthroplasty.

The purpose of this study was to evaluate the outcome of femoral impaction bone grafting with an allograft combined with hydroxyapatite (HA). Fifty-four consecutive femoral reconstructions that were performed with the use of frozen morselized allografts and HA were followed up retrospectively. The average follow-up period was 92 months.

Mid-term results of acetabular reconstruction using a Kerboull-type acetabular reinforcement device.

Purpose: The purpose of this study was to investigate the mid-term results of 32 acetabular reconstructions performed using a Kerboull-type acetabular reinforcement device and bone graft between June 1997 and January 2009.

Methods: The mean age of the patients at the time of surgery was 71.4 years (range 55-85).