Is the Charnley evolution working? A five-year outcome study

Area of Science:

• Orthopedic Surgery
• Biomaterials Science
• Clinical Research

Background:

• Total hip arthroplasty (THA) is a common procedure for hip joint diseases.
• Evaluating the long-term performance of cemented femoral components is crucial for patient outcomes.
• The Elite Plus cemented femoral component was introduced to improve THA efficacy.

Purpose of the Study:

• To prospectively evaluate the clinical and radiological outcomes of the Elite Plus cemented femoral component in primary total hip arthroplasty.
• To compare the five-year results of the Elite Plus hip arthroplasty with established benchmarks, such as the Charnley hip.

Main Methods:

• Prospective study of 200 consecutive primary total hip arthroplasties using Elite Plus cemented femoral components.
• Clinical evaluation using the Harris Hip Score (HHS) preoperatively and at five years.
• Radiographic assessment including measurement of femoral subsidence at five years.

Main Results:

• Mean HHS improved significantly from 39.3 preoperatively to 89.6 at five years.
• Mean femoral subsidence was 1.40 mm at five years.
• Low annual re-operation rate of 0.2% with no revisions for aseptic loosening.

Conclusions:

• The Elite Plus cemented femoral component achieved favorable clinical and radiological outcomes at five years.
• Results are comparable to historical data from the Charnley hip, suggesting good long-term performance.
• The study supports the efficacy of the Elite Plus hip arthroplasty in primary THA procedures.