Forces under the hallux valgus foot before and after surgery

Area of Science:

• Biomechanics
• Orthopedic Surgery
• Podiatry

Background:

• Hallux valgus (bunion) is a common foot deformity.
• Altered foot loading patterns are associated with hallux valgus.
• Surgical interventions aim to correct deformity and restore normal function.

Purpose of the Study:

• To investigate foot loading abnormalities in hallux valgus.
• To evaluate the impact of surgical correction on foot loading.
• To compare different surgical techniques for hallux valgus.

Main Methods:

• Gait analysis measuring foot pressure distribution.
• Comparison of pre-operative and post-operative loading in hallux valgus patients.
• Inclusion of healthy feet data for baseline comparison.
• Analysis of silastic arthroplasty for hallux valgus and hallux rigidus.

Main Results:

• Hallux valgus is linked to reduced load on toes and medial forefoot.
• Surgical procedures (Keller's, osteotomy) did not normalize loading and could worsen it.
• Decreasing the first-second metatarsal angle post-surgery reduced loading abnormalities.
• Silastic arthroplasty carried low loads for hallux valgus but near-normal loads for hallux rigidus.

Conclusions:

• Surgical correction of hallux valgus can exacerbate abnormal foot loading.
• The degree of deformity correlates with loading abnormalities.
• Minimizing the first-second metatarsal angle may improve surgical outcomes.
• Understanding loading changes is crucial for effective hallux valgus treatment.