Objective: This study aimed to compare the functional and radiological outcomes of first metatarsophalangeal (MTP) joint arthrodesis in patients with hallux valgus (HV) and hallux rigidus (HR).
Materials and
Methods: This retrospective cohort study included 78 feet (39 HV and 39 HR) that underwent first MTP arthrodesis between 2015 and 2023. Data collected included demographic information, surgical technique, radiological measurements (hallux valgus angle and intermetatarsal angle), union rates, and clinical outcomes assessed by the American Orthopaedic Foot and Ankle Society (AOFAS) score and Visual Analog Scale for pain. Statistical analyses compared outcomes between the HV and HR groups.

Results: Post-operative AOFAS scores demonstrated no significant difference between the HV and HR groups (p=0.236). Union rates were comparable (87.2% in HV vs. 89.7% in HR, p=0.500). Complication rates, including implant failure and superficial infection, were low and similar between the groups. One symptomatic non-union was observed.

Conclusion: The findings indicate that first MTP arthrodesis yields comparable functional outcomes, union rates, and low complication rates in patients with both HV and HR. These outcomes support the efficacy of the procedure irrespective of the underlying pathology.