Quadriceps Coxae-Sparing Modified Posterior Approach to the Hip Joint for Hemiarthroplasty

Area of Science:

• Orthopedic Surgery
• Hip Arthroplasty
• Surgical Techniques

Background:

• The conventional posterior approach for hip arthroplasty involves detaching the quadratus coxae (QC) muscles, increasing dislocation risk.
• Repairing detached QC muscles often fails due to biomechanical forces during healing.
• Muscle-sparing modifications aim to reduce prosthetic dislocation rates.

Purpose of the Study:

• To describe and evaluate a modified posterior hip arthroplasty technique that preserves the quadratus coxae (QC) muscles.
• To assess the potential benefits of QC preservation on hip stability and patient outcomes.

Main Methods:

• A modified posterior approach preserving the QC muscles (SPAIRE technique) was performed.
• The technique involves careful dissection to mobilize the QC and release capsular attachments.
• Standard bipolar hemiarthroplasty was performed, followed by repair of the musculocapsular flap.

Main Results:

• The modified approach preserves the QC, potentially improving prosthetic hip stability and proprioception.
• Patients undergoing the muscle-sparing approach reported less early postoperative pain compared to a standard lateral approach.
• No hindrance in visualization or component malposition was observed with QC preservation.

Conclusions:

• Preserving the quadratus coxae (QC) during posterior hip arthroplasty is feasible and offers advantages.
• This technique may lead to improved hip stability and reduced postoperative pain.
• Minimally invasive, muscle-sparing approaches can enhance patient recovery and outcomes.