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Failure of a well-fixed bone-ingrown titanium hip prosthesis
W A Hodge1, J P Collier, V A Surprenant
1Department of Orthopaedic Surgery, Good Samaritan Medical Center, West Palm Beach, Florida.
Orthopaedic Review
|June 1, 1993
Summary
Revision surgery for a cementless titanium femoral stem revealed significant titanium and polyethylene wear debris. Detached fiber-mesh pads from the stem were identified as a debris source, contributing to osteolysis.
Area of Science:
- Orthopedic Surgery
- Biomaterials Science
- Wear Debris Analysis
Background:
- Cementless femoral stems are widely used in total hip arthroplasty.
- Titanium alloys and polyethylene are common materials in hip implants.
- Osteolysis is a known complication associated with prosthetic joint loosening.
Observation:
- A cementless titanium femoral stem required revision 5 years post-implantation due to pain and osteolysis.
- Extensive titanium and polyethylene wear debris were observed in surrounding tissues.
- Detachment of titanium fiber-mesh pads from the femoral stem was noted.
Findings:
- Multiple sources contributed to the generation of wear debris.
- Detached titanium fiber-mesh pads were a significant source of debris.
- The wear debris likely contributed to the observed osteolysis and implant failure.
Implications:
- Understanding debris generation is crucial for improving implant design.
- This case highlights potential failure modes in cementless titanium femoral stems.
- Further research into wear mechanisms and material integration is warranted to enhance long-term implant survival.