Indian Journal of Orthopaedics Surgery


Radiological assessment of the outcome and complications of uncemented revision total hip arthroplasty in failed primary hemiarthroplasty


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Author Details: Chidanand R. Metri, Pavankumar H. Patil

Volume : 3

Issue : 1

Online ISSN : 2395-1362

Print ISSN : 2395-1354

Article First Page : 12

Article End Page : 17


Abstract

Introduction: Uncemented revision total hip arthroplasty is the procedure of choice for the patients with failed hemiarthroplasty providing pain relief, preservation of mobility, range of motion and easy rehabilitation.Inthe present study, radiologicalyy assessed the outcome and complications of uncemented Total Hip Arthroplasty in failed primary hemiarthroplasty.
Methods: Radiographs of the pelvis with both hips with proximal half of shaft of femora – AP View and lateral view of the involved side was taken for all patients. The radiograph was evaluated for Loosening of the prosthesis, Calcar resorption, Cortical hypertrophy, Periprosthetic fracture, Acetabular index, Bone stock of the acetabulum, Need for bone grafting and Size of the femoral canal.
Statistical Analysis: Student’s paired t-test was used to find out the significance of difference between pre-operative and post-operative Harris Hip scores.
Results: The Acetabular Inclination Angle was found to be 40-60 degrees in 66.67% cases, one case with less than 35 degrees. In unilateral cases offset is compared with the opposite side. Centre of rotation almost restored in majority of cases (90%). Post operative radiological complications are very few. The incidence of fractures ranges from 0.1 to 1.0 percent for cemented components and 3 to 18 percent for uncemented components.
Conclusion: The modular series of uncemented total hip prosthesis is the implant of choice for uncemented revision total hip arthroplasty as it provides stability and ingrowth, as well as the ability to control leg length, offset and version.

Keywords:
Radiological Assessment, Total Hip Arthroplasty, Failed Primary Hemiarthroplasty, Acetabular Inclination Angle