Does impact sport activity influence total hip arthroplasty durability?

Area of Science:

• Orthopedic surgery
• Biomaterials science
• Sports medicine

Background:

• Return to sport is a primary patient goal post-hip arthroplasty (THA).
• High-impact activities post-THA raise questions about implant durability and polyethylene wear.
• The specific influence of high-impact sport on THA longevity remains unclear.

Purpose of the Study:

• Compare functional outcomes (Harris hip score, Hip Osteoarthritis Outcome Score) between high-impact athletes and lower-activity patients.
• Evaluate and compare linear wear rates in THA implants.
• Assess and compare survivorship, focusing on revision for mechanical failure and aseptic loosening.

Main Methods:

• Retrospective analysis of 843 THAs (1995-2000).
• Identified 70 high-impact sport patients and 140 low-activity controls.
• Minimum 10-year follow-up with functional outcome scores and radiographic evaluation.

Main Results:

• High-impact group showed better functional scores in three of five Hip Osteoarthritis Outcome Score subscales.
• Mean linear polyethylene wear was significantly higher in the high-impact group.
• The high-impact group experienced a higher rate of revision surgery for mechanical failure.

Conclusions:

• Engaging in high-impact sports after THA is associated with increased risks of mechanical failure.
• Elevated polyethylene wear rates are observed in high-impact athletes post-THA.
• Both patients and surgeons must be aware of the potential mechanical risks linked to high-impact activities.