Related Experiment Videos
Hallux valgus due to cuneiform-metatarsal instability
1Mayo Clinic Scottsdale, AZ, 85259, USA.
Journal of the Southern Orthopaedic Association
|January 1, 1994
Summary
This study proposes a biomechanical approach for severe hallux valgus using first cuneiform metatarsal (CM) joint realignment and fusion. A novel surgical technique, a variant of the Lapidus procedure, effectively corrects the deformity.
Area of Science:
- Orthopedic Surgery
- Biomechanics
- Foot and Ankle Reconstruction
Background:
- Severe hallux valgus deformity is often linked to instability at the first cuneiform metatarsal (CM) joint.
- Understanding the biomechanics of the CM-1 articulation is crucial for effective treatment.
Purpose of the Study:
- To present a biomechanical rationale for treating severe hallux valgus via CM-1 joint realignment and arthrodesis.
- To describe a refined surgical technique for addressing this complex foot deformity.
Main Methods:
- Preoperative assessment using a forefoot compression test to evaluate foot alignment.
- Surgical intervention involving a modified Lapidus procedure with dual screw fixation and bone grafting of the CM-1 joint.
Main Results:
- The forefoot compression test demonstrated effectiveness in realigning the first metatarsal and the metatarsophalangeal joint.
- The described surgical technique provides a stable fixation and fusion of the CM-1 articulation.
Conclusions:
- Instability of the first cuneiform metatarsal (CM) joint is a key factor in severe hallux valgus.
- Realignment and arthrodesis of the CM-1 joint, using this modern Lapidus variant, offer a viable surgical solution.