Five- to 10-year results using a noncemented modular revision stem without bone grafting

Area of Science:

• Orthopedic Surgery
• Biomaterials Engineering
• Reconstructive Surgery

Background:

• Revision hip arthroplasty addresses failed primary hip replacements.
• Femoral defects present challenges in revision surgery.
• Modular uncemented stems offer potential solutions for bone reconstruction.

Purpose of the Study:

• To evaluate the long-term (5-10 years) clinical and radiographic outcomes of the Profemur-R modular uncemented revision stem.
• To assess the efficacy of this implant in reconstructing femoral defects without bone grafting.

Main Methods:

• Prospective evaluation of 73 consecutive Profemur-R stem revisions.
• Assessment of functional outcomes using Harris hip score.
• Radiographic analysis of bone defect remodeling and implant stability.
• Calculation of implant survival rate with aseptic loosening as the endpoint.

Main Results:

• Average Harris hip score improved from 40 to 75.
• Complete bone defect remodeling in 70% of cases; partial in 30%.
• 96% survival rate at an average of 10 years, with only 2 cases of progressive subsidence and 3 rerevisions (1 septic).

Conclusions:

• The Profemur-R modular uncemented revision stem is a safe and effective option for femoral reconstruction in revision hip arthroplasty.
• The implant facilitates significant bone defect remodeling and provides durable fixation.
• It offers a viable solution for complex revision cases, improving functional outcomes.