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Femoral stem dislodgement during bipolar hemiarthroplasty dislocation
Luiz S Marcelino Gomes1, Wellington do Carmo, Wender de Souza
1Department of Orthopedics and Rehabilitation, Santa Casa de Batatais, São Paulo, Brazil.
Orthopedics
|June 15, 2011
Summary
A rare complication of bipolar hemiarthroplasty dislocation involves femoral stem dislodgement from the cement mantle. This case was successfully managed by repositioning the stem and reinforcing it with bone cement.
Area of Science:
- Orthopedic Surgery
- Biomaterials Engineering
Background:
- Bipolar hemiarthroplasty is a viable treatment for displaced femoral neck fractures in elderly patients.
- Potential implant-related complications include acetabular erosion, dislocation, and component loosening.
Observation:
- A case is presented where a polished collarless tapered femoral stem dislodged from its cement mantle.
- This occurred 28 days post-surgery during a traumatic bipolar hemiarthroplasty dislocation.
Findings:
- Femoral stem dislodgement from the cement mantle during bipolar hemiarthroplasty dislocation is a previously unreported complication.
- The dislodged stem was successfully managed by repositioning it into the original cement mantle and reinforcing it with bone cement.
Implications:
- This complication, though rare, should be considered in cases of bipolar hemiarthroplasty dislocation.
- Routine application of bone cement over the femoral stem's shoulder may prevent future dislodgement episodes.
