The modified McBride procedure: clinical, radiological, and pedobarographic evaluations

Area of Science:

• Orthopaedic Surgery
• Podiatric Medicine
• Biomechanics

Background:

• Hallux valgus, commonly known as a bunion, is a prevalent foot deformity.
• Symptomatic hallux valgus can significantly impact quality of life and foot function.
• The modified McBride procedure is a surgical option for correcting hallux valgus.

Purpose of the Study:

• To prospectively evaluate the outcomes of the modified McBride procedure for symptomatic hallux valgus.
• To assess the procedure's effectiveness using clinical scoring, radiographic measurements, and pedobarography.
• To determine patient satisfaction following the modified McBride procedure.

Main Methods:

• Prospective study of 19 patients (27 feet) undergoing the modified McBride procedure.
• Preoperative and postoperative assessment using American Orthopaedic Foot and Ankle Society (AOFAS) scores.
• Weight-bearing radiographs and EMED-SF*6 pedobarography were utilized for objective measurements.

Main Results:

• Significant improvement in AOFAS scores (53 to 87) and reduction in hallux valgus (32° to 15°) and intermetatarsal angles (15° to 10°).
• Pedobarography revealed a 17.5% increase in hallux contact area and reduced peak pressures.
• Overall patient satisfaction was high at 96%.

Conclusions:

• The modified McBride procedure demonstrates significant efficacy in correcting hallux valgus deformities.
• The procedure leads to improved foot biomechanics, including increased hallux weight-bearing.
• It is a recommended surgical option for patients with passively correctable hallux valgus and a supple metatarsocuneiform joint.