Interpositional Arthroplasty of the First Metatarsophalangeal Joint using a Collagen Patch Allograft for Hallux Rigidus: A Case Report
10.14193/jkfas.2026.30.1.22
- Author:
Gab-Lae KIM
1
;
Ho-Won LEE
;
Ji Hun KIM
Author Information
1. Department of Orthopaedic Surgery, Kangdong Sacred Heart Hospital, College of Medicine, Hallym University, Seoul, Korea
- Publication Type:Case Report
- From:Journal of Korean Foot and Ankle Society
2026;30(1):22-25
- CountryRepublic of Korea
- Language:English
-
Abstract:
The surgical options for arthritis of the first metatarsophalangeal (MTP) joint include cheilectomy, interpositional arthroplasty, and arthrodesis. Arthrodesis provides reliable pain relief but sacrifices joint motion. Therefore, motion-preserving interpositional arthroplasty is preferred for selected active patients. This paper reports a case and early outcomes of interpositional arthroplasty of the first MTP joint using a collagen patch allograft circumferentially wrapped around the metatarsal head, secured with symmetric 1.6-mm mini suture anchors, and protected by temporary transarticular K-wire fixation. At 6 weeks, the pain decreased (VAS 8→3), and the active dorsiflexion/ plantarflexion improved to approximately 45°/45°, without wound complications or radiographic loosening. The collagen patch allograft provided uniform coverage and mechanical stability while avoiding donor-site morbidity associated with autografts. This technique is a reproducible, motion-preserving alternative for patients seeking to maintain joint mobility. Nevertheless, longer-term studies will be required to evaluate the durability and comparative outcomes.
