OUTCOME OF MOJE’S HALLUX ARTHROPLASTY (FUNCTIONAL AND RADIOLOGICAL OUTCOME)

Abstract

We retrospectively reviewed 27 patients who underwent an uncemented total Moje ceramic arthroplasty of hallux rigidus.

Out of 33 patients who had the above procedure, 27 were available for review. Clinical and functional outcome were assessed using the American orthopaedic foot and ankle society (AOFAS) fore-foot score, and the SF-36 health assessment score. All patients had an antero-posterior and a lateral weight bearing radiograph

The primary pathology was oesteo-arthritis (Hallux Rigidus). All procedures were performed by the senior author or under his supervision.

All patients were female with an average age at surgery of 52.6 years (range 45.8–64.7). The average follow up was 39.5 months (range 14–46).

The average post-operative AOFAS forefoot score was 80/100 (range 40–100). The average subscore for pain was 29.39/40 (range 10–40). Twenty five patients 92.5% were satisfied with the outcome, and 22 (81%) were able to wear high heel foot wear.

The functional outcome as assessed using the SF-36 health score was compatible with an age matched population.

The alignments of component were measured in relation to the shaft of the metatarsal and to the proximal phalange. There was no statistical correlation between the alignment and the functional scores.

Although, arthrodesis remains the gold standard procedure, total ceramic first MTP joint arthroplasty has a place in the management of some cases of advanced but not end stage hallux rigidus. Careful patient selection is essential to achieve a favourite outcome.