J Korean Foot Ankle Soc.  2014 Mar;18(1):19-23. 10.14193/jkfas.2014.18.1.19.

Treatment of Bunionette Deformity with Diaphyseal Oblique Osteotomy

Affiliations
  • 1Department of Orthopaedic Surgery, Seoul National University Boramae Medical Center, Seoul, Korea. kjh12344@hanmail.net

Abstract

PURPOSE
The purpose of this study is to evaluate the clinical and radiographic results of symptomatic bunionette treated with a diaphyseal oblique osteotomy.
MATERIALS AND METHODS
We retrospectively reviewed 12 feet of nine patients diagnosed as symptomatic bunionette and treated with diaphyseal oblique osteotomy. All patients were female and the average age at the time of surgery was 48 years. We checked the foot standing anteroposterior, oblique, and lateral images pre- and post-operatively. We measured the fourth intermetatarsal angle and fifth metatarsophalangeal angle and evaluated the clinical results using the American Orthopaedic Foot and Ankle Society (AOFAS) lesser metatarsophalangeal-interphalangeal (MTP-IP) scale preoperatively and six months postoperatively.
RESULTS
Of the nine patients, hallux valgus was combined with symptomatic bunionette in seven feet of five patients. In all of our cases, the average AOFAS lesser MTP-IP scale showed improvement after surgery. Painful callosity around the fifth metatarsophalangeal joint disappeared after surgery in all of our cases. The fourth intermetatarsal angle improved from 12.7degrees to 3.1degrees and the fifth metatarsophalangeal angle improved from 16.6degrees to 2.3degrees.
CONCLUSION
Diaphyseal oblique osteotomy of the fifth metatarsal appears to be a safe and satisfactory surgical procedure for treatment of symptomatic bunionette.

Keyword

Bunionette; Diaphyseal oblique osteotomy; Exostectomy; Fifth metatarsal

MeSH Terms

Ankle
Bunion, Tailor's*
Callosities
Congenital Abnormalities*
Female
Foot
Hallux Valgus
Humans
Metatarsal Bones
Metatarsophalangeal Joint
Osteotomy*
Retrospective Studies
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