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Experiences with the BiCONTACT revision stems with distal interlocking
Young-Min Kim1, Hee Joong Kim, Won Seok Song
1Department of Orthopedic Surgery, Seoul National University College of Medicine, Korea.
Insights
Revision total hip arthroplasty using cementless distal interlocking femoral stems demonstrated satisfactory outcomes. This approach offers excellent stability and bone ingrowth, reducing the need for repeat procedures.
Area of Science:
- Orthopedic Surgery
- Biomaterials Engineering
Background:
- Revision total hip arthroplasty presents challenges in achieving stable fixation.
- Cementless femoral stems require robust integration for long-term success.
Purpose of the Study:
- To evaluate the efficacy of cementless distal interlocking femoral stems in revision total hip arthroplasty.
- To assess radiographic and clinical outcomes of the BiCONTACT stem.
Main Methods:
- Retrospective analysis of 68 consecutive revision total hip arthroplasties.
- Utilized cementless distal interlocking femoral stems (BiCONTACT).
- Follow-up included clinical assessment (Harris hip score) and radiographic evaluation.
Main Results:
- Significant improvement in average Harris hip score from 60 to 88.
- All cases showed radiographic evidence of bone ingrowth with no subsidence, osteolysis, or loosening.
- No repeat revisions were required during the average 40-month follow-up.
Conclusions:
- Cementless distal interlocking femoral stems provide satisfactory results in revision total hip arthroplasty.
- Diaphyseal fixation with distal interlocking screws ensures primary axial and rotational stability.
- This technique is a viable option for revision hip surgery.
Abstract:
The first consecutive 68 revision total hip arthroplasties of a cementless distal interlocking femoral stem (BiCONTACT; Aesculap AG, Tuttlingen, Germany) are included in this study. Average follow-up time was 40 months (range, 36-49 months). At follow-up evaluation, one patient had died, and one could not be located. The average Harris hip score improved from 60 points to 88 points. All cases showed radiographic evidence of a bone ingrown prosthesis, and no subsidence was seen. No osteolysis and no radiologic loosening were noted. No repeat revision was needed during the follow-up period. The results of the distal interlocking femoral stems (BiCONTACT) in cementless revision total hip arthroplasty were satisfactory. These findings suggest that a diaphyseal fixation of the revision femoral stem with distal interlocking screws can provide primary axial and rotational stability of the prosthesis in revision surgery.
