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Total hip replacement after tumor resection--30 years experience.
1Orthopedic Clinic Bulovka, Institute for Postgraduate Studies, 1st Medical School, Charles University, Prague.
La Chirurgia Degli Organi Di Movimento
|January 23, 2004
Summary
This study reviews 161 hip replacements for bone tumors, finding long stems effective. Anti-luxation cups and slight varus positioning improve outcomes for tumor patients.
Area of Science:
- Orthopedic Surgery
- Oncology
- Biomaterials Engineering
Background:
- Total hip replacement (THR) is crucial for limb salvage after proximal femur tumor resections.
- Historically, hemiarthroplasty was the primary option, but advancements have introduced specialized long-stem endoprostheses.
Purpose of the Study:
- To evaluate the long-term outcomes of cemented total hip replacements in patients undergoing tumor resections around the hip.
- To assess the performance of Protek and Poldi long-stem endoprostheses and identify factors influencing success.
Main Methods:
- Retrospective analysis of 161 cemented total hip replacements implanted between 1971 and 2001.
- Utilized Protek and Poldi long stems with cemented ultra-high-molecular-weight polyethylene cups.
- Data collected on patient demographics, tumor types, implant survival, and complications.
Main Results:
- Three Protek and two Poldi stems fractured; early dislocation was noted with standard cups.
- Anti-luxation cups with higher rims are recommended to facilitate early ambulation.
- Slight varus positioning of the cup correlated with better long-term results.
Conclusions:
- Cemented total hip replacement with long stems is a viable option for hip tumor resections.
- The Poldi endoprosthesis offers a cost-effective solution, particularly for secondary malignant tumors.
- Continuous patient follow-up is essential for advancing this specialized field of endoprosthetics.