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Cementless hip implants: an expanding choice.
Dia Eldean Giebaly1, Haider Twaij2, Mazin Ibrahim3
1University College London Hospital, London - UK.
Summary
Cementless hip implants offer good long-term survival and function, especially in younger patients. Further research is needed to compare designs and determine optimal use based on patient factors.
Area of Science:
- Orthopedic Surgery
- Biomaterials Engineering
Background:
- Total hip replacement (THR) is highly successful, with cementless implants evolving to address loosening issues common in cemented prostheses.
- The ideal uncemented femoral stem aims for biomechanical restoration, pain-free function, and lifelong durability.
- Achieving optimal results with cementless stems requires initial stability, osseointegration, biological fixation, and effective stress transfer to bone.
Purpose of the Study:
- To review current literature on cementless hip prostheses using evidence-based practice.
- To discuss factors influencing cementless stem integration, stability, and fixation.
Main Methods:
- Literature review of current scientific publications.
- Discussion of key factors including implant geometry, surface roughness, stem coating, surgical technique, and patient bone quality.
Main Results:
- Uncemented femoral stems demonstrate good long-term survivorship and functional outcomes.
- Promising results are noted particularly in younger patient populations.
Conclusions:
- Biological fixation is the preferred method for cementless implants.
- Limitations in current research hinder definitive comparisons between different stem designs and indications.
- Future studies should incorporate patient age, activity level, bone type, and deformities for more conclusive findings on optimal cementless implant selection.
