Hybrid total hip replacement. A 6.5-year follow-up study

Area of Science:

• Orthopedic Surgery
• Biomaterials Engineering
• Clinical Outcomes Research

Background:

• Hip replacement surgery is a common procedure for debilitating hip joint conditions.
• Hybrid hip arthroplasty combines cemented and cementless components, offering potential benefits.
• Assessing long-term outcomes of hybrid hip designs is crucial for patient selection and surgical technique refinement.

Purpose of the Study:

• To evaluate the mid-term to long-term clinical outcomes of hybrid hip replacements.
• To assess the survivorship and functional results of cemented femoral and porous-ingrowth acetabular components.
• To determine the effectiveness of third-generation cementing techniques in femoral fixation.

Main Methods:

• Review of 97 consecutive primary hip replacements.
• Utilized cemented femoral components and porous-ingrowth acetabular components.
• Minimum five-year follow-up (average 6.5 years) with assessment of pain and functional scores.

Main Results:

• Average Harris hip score of 93 indicates excellent functional recovery.
• 85% of patients reported no or only slight pain.
• No deterioration in results observed since the two-year follow-up.
• Excellent long-term femoral fixation with third-generation cementing techniques; only one stem revised for loosening.
• No cementless acetabular components revised for loosening.

Conclusions:

• Hybrid hip arthroplasty demonstrates success for up to eight years.
• This approach appears suitable for a significant patient population.
• Third-generation cementing techniques provide excellent long-term femoral fixation in hybrid hip designs.