Horizontal platform supported total hip replacement

Area of Science:

• Orthopedic Surgery
• Biomaterials Science
• Medical Device Engineering

Background:

• Total hip replacement (THR) is a common surgical procedure for treating hip arthritis.
• Cementless THR aims to improve long-term implant survival through bone ingrowth.
• The horizontal platform supported (HPS) femoral component is designed to optimize stress distribution.

Purpose of the Study:

• To evaluate the long-term clinical and radiographic outcomes of cementless total hip replacement using the HPS prosthesis.
• To assess the efficacy of the HPS femoral component in primary hip arthroplasty.

Main Methods:

• A retrospective study of 65 primary cementless porous-coated HPS total hip replacements implanted between 1982 and 1989.
• Clinical and radiographic follow-up was performed on 53 hips in 50 patients.
• Assessment included the Harris hip score and radiographic evaluation for osteolysis and bone remodeling.

Main Results:

• Average follow-up was 6.8 years (range: 5-12 years).
• 98% of hips (52/53) achieved excellent or good results based on the Harris hip score (average 92).
• No anterior thigh pain was reported; two early revisions were due to technical issues.

Conclusions:

• The HPS femoral component may favorably influence clinical and radiographic results in cementless total hip replacement.
• This design shows promise for improving outcomes in primary hip arthroplasty.
• Long-term follow-up supports the use of HPS prosthesis in cementless hip arthroplasty.