Changes in chondrolabral mechanics, coverage, and congruency following peri-acetabular osteotomy for treatment of acetabular retroversion: A patient-specific finite element study

Finite Element Analysis Stress Distribution Acetabular Cup Biomaterial FINITE ELEMENT ANALYSIS OF PERI-ACETABULAR STRESS OF CEMENTED, METAL-BACKED, AND POROUS TANTALUM BACKED ACETABULAR COMPONENTS

Introduction: In contemporary THA there are two broad approaches to acetabular cup design and materials. One is an all-polyethylene design with polymethylmethacrylate (PMMA) cement. PMMA possesses a modulus of elasticity of about 2 GPa, which is between that of trabecular and subchondral bone. The second more popular approach, especially for active, younger patients, is the porous metal-backed ...

Combined Femoral and Acetabular Osteotomy in Children of Walking Age for Treatment of DDH; A Five Years Follow-Up Report

Background: The prevalence of neglected developmental dysplasia of the hip (DDH) has been decreasing. Nowadays, the disease is rarely seen in walking age children. The purpose of this study is to assess the results of simultaneous osteotomy of femur and pelvic bones in such children.Method: We performed a retrospective study on 30 children aged 3.8±0.9 (range: 1.5-7) years old, with DDH who und...

Complications after Combined Hip Arthroscopy and Peri-acetabular Osteotomy

Computer-Assisted Rotational Acetabular Osteotomy for Patients with Acetabular Dysplasia

Rotational acetabular osteotomy (RAO) is a well-established surgical procedure for patients with acetabular dysplasia, and excellent long-term results have been reported. However, RAO is technically demanding and precise execution of this procedure requires experience with this surgery. The usefulness of computer navigation in RAO includes its ability to perform three-dimensional (3D) preoperat...

Correlation between radiographic measures of acetabular morphology with 3D femoral head coverage in patients with acetabular retroversion

BACKGROUND AND PURPOSE Acetabular retroversion may result in anterior acetabular over-coverage and posterior deficiency. It is unclear how standard radiographic measures of retroversion relate to measurements from 3D models, generated from volumetric CT data. We sought to: (1) compare 2D radiographic measurements between patients with acetabular retroversion and normal control subjects, (2) com...