Abstract
The purpose of this study was to evaluate the radiographic outcomes of primary metatarsophalangeal
joint arthrodesis for hallux abductovalgus deformities. Between January 2004 and March
2009, 56 consecutive patients (58 feet) underwent primary arthrodesis of the metatarsophalangeal
joint (MTPJ) for severe hallux abductovalgus deformity and or hallux rigidus. Results
were assessed by primary radiographic outcome measurements (hallux valgus and first-second
intermetatarsal angle). Overall, the mean hallux valgus (HA) angle improved significantly
from 31.9° to 13.4° (P < .01). The mean first-second intermetatarsal (IM) angle correction was also signficantly
reduced from 14.0° to 9.7° (P < .01). When separated by deformity group (mild, moderate, and severe), the mean
hallux valgus and first-second intermetatarsal angles demonstrated statistically significant
correction in all groups when comparing preoperative and postoperative values (P < .01). Primary arthrodesis provides predictable radiographic outcomes and effective
correction for patients with differing severity of hallux abductovalgus deformity
and arthritis of the first metatarsophalangeal joint. A separate proximal osteotomy
for severe metatarsus primus varus correction may not be necessary because of the
correction achieved at the metatarsophalangeal joint arthrodesis level. The results
of this study demonstrate that as the severity of the preoperative deformity increases,
the amount of postoperative radiographic (HA and IM angle measurement) correction
after MTPJ arthrodesis will improve correspondingly.
Level of Evidence
Keywords
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Article info
Publication history
Published online: July 20, 2010
Footnotes
Financial Disclosure: None reported.
Conflict of Interest: None reported.
Identification
Copyright
© 2010 American College of Foot and Ankle Surgeons. Published by Elsevier Inc. All rights reserved.
