Cementless Total Hip Arthroplasty Using a Modular Femoral Component in Patients with Femoral Head Osteonecrosis: Comparison of Metal-on-Metal and Ceramic-on-Ceramic Articulation.
10.5371/jkhs.2011.23.4.275
- Author:
Bun Jung KANG
1
;
Jue Hee LEE
;
Young Bok JUNG
;
Jin Hong KIM
;
Yongmoon HAN
;
Eui Chan JANG
;
Kyoung Woon KIM
Author Information
1. Department of Orthopaedic Surgery, SM Christianity Hospital, Pohang, Korea.
- Publication Type:Original Article
- Keywords:
Femoral head;
Osteonecrosis;
Primary THRA;
Cementless modular femoral stem
- MeSH:
Arthroplasty;
Dislocations;
Follow-Up Studies;
Head;
Hip;
Humans;
Osteolysis;
Osteonecrosis;
Postoperative Complications;
Survival Rate
- From:Journal of the Korean Hip Society
2011;23(4):275-281
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: The purpose of this study was to evaluate the clinical and radiological outcomes after total hip arthroplasty using the S-ROM modular system for osteonecrosis of the femoral head, and to compare the results between the groups using metal-on-metal articulation and ceramic-on-ceramic articulation. MATERIALS AND METHODS: Sixty-six patients (78 hips) with osteonecrosis of the femoral head were evaluated after primary total hip arthroplasty between January 2001 and December 2004, using an S-ROM proximal modular femoral stem. The average follow-up was 77 months (range, 60 to 122 months) and all patients were followed for more than five years. RESULTS: The average Harris hip score improved from 53 points to 88.5 points at the final follow-up. At the latest radiologic evaluation, sixty-seven stems had bony ingrowth stability, and 10 stems had stable fibrous ingrowth. However, one stem had diffuse extensive osteolysis and loosening, which was revised at 9 years. Postoperative complications included 4 cases of heterotrophic ossificiation, 1 case of linear fracture after insertion of the femoral stem, 1 case of dislocation, 2 cases of infection, and 1 case of extensive osteolysis and loosening. There were 3 cases of revision and Kaplan-Meier survivorship analysis with revision estimated at a 95.7% chance of survival for the femoral component during 122 months. CONCLUSION: Our study showed that total hip arthroplasty using the S-ROM modular system with metal-on-metal articulation or ceramic-on-ceramic articulation had favorable clinical and radiological mid- to long-term results.
