Great Toe Metatarsophalangeal Joint Arthrodesis: A User-Friendly Technique

Author:

Smith Ronald W.12,Joanis Terry L.3,Maxwell Phyllis D.3

Affiliation:

1. Division of Orthopaedic Surgery, University of California at Los Angeles

2. Harbor/UCLA Medical Center, Torrance, California

3. Balance Orthopaedic Foot and Ankle Center

Abstract

Thirty-four feet (23 patients) were treated with a metatarsophalangeal (MP) joint fusion of the hallux using five threaded 0.062-in K wires for fixation. Operations were done for the following diagnoses: rheumatoid arthritis (26 procedures), hallux rigidus (1), salvage of previous bunionectomies (3), hallux valgus with absent toe, bilateral fusion (2), severe hallux valgus with chronic MP joint synovitis (1), and congenital hallux varus (1). The ages ranged from 17 to 73 years, with an average of 55 years. Follow-up was available on 31 of the fusions by questionnaire and telephone contact, with an average follow-up of 24 months and a minimum of 1 year. The successful arthrodesis rate was 97%. In 9% of the procedures (three cases), the patients were dissatisfied: This was due to pain under the first metatarsal head in two cases and to impingement between the first and second toes in a third case. In 91% of the fusions (29 of 32 patient responses), the patients stated that they would have the surgery if they had to choose again. Patients indicated “complete satisfaction” in 15 fusions and “satisfaction with reservations” in 14. Patients felt that their ability to wear desired shoes was improved in 48% of the procedures, was unchanged by the fusions in 26%, and was worse than before the operation in 26%. Based on this study and review of the literature, a recommendation is made for fusing the rheumatoid hallux with 25° to 30° of valgus and 10° of extension. In general, selection of toe position for fusion is based on reducing stress on the hallux interphalangeal joint and accommodating the position of the second toe. The multiple pin fixation technique gives a high incidence of fusion, it is easy to perform, and it is adaptable to the varying requirements for toe position.

Publisher

SAGE Publications

Subject

General Medicine

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