[Modified acetabuloplasty using bioresorbable screws and lyophilised allogenic bone]

Area of Science:

• Orthopedic Surgery
• Pediatric Orthopedics
• Hip Dysplasia Treatment

Background:

• Standard acetabuloplasty for hip conditions often involves autologous iliac crest bone grafts and K-wire fixation.
• These traditional methods can lead to operative trauma, donor site morbidity, and necessitate a second procedure for implant removal.
• Magnetic Resonance Imaging (MRI) follow-ups can be complicated by metallic K-wires.

Purpose of the Study:

• To evaluate a modified acetabuloplasty technique using allogenic bone transplants and resorbable screws.
• To assess if this modification minimizes operative trauma and avoids a second surgical procedure.
• To determine if the modified technique permits MRI follow-ups without increased risk.

Main Methods:

• A case series of 15 patients (mean age 6.7 years) with hip dysplasia or Perthes' disease.
• Modified acetabuloplasty involved allogenic bone wedges (lyophilized femoral grafts) and bioresorbable polylactide screws for fixation.
• Clinical and radiographic follow-ups were performed.

Main Results:

• No intraoperative or postoperative complications were reported.
• Allogenic bone grafts showed successful remodeling without dislocation or significant subsidence.
• Radiographic indices, including the acetabular index, remained stable during follow-up.

Conclusions:

• The modified acetabuloplasty is a gentle surgical option for hip dysplasia and Perthes' disease.
• It effectively avoids the complications associated with iliac crest bone harvesting.
• This technique eliminates the need for a second anesthesia procedure for implant removal and facilitates MRI compatibility.