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Journal of the American Podiatric Medical Association
Volume 95 Number 4 357-365 2005
Copyright © 2005 American Podiatric Medical Association

Plantar Pressure and Radiographic Changes to the Forefoot After the Austin Bunionectomy

Alan R. Bryant, PhD *, Paul Tinley, PhD {dagger} and Joan H. Cole, PhD {ddagger}

* Podiatric Medicine, Faculty of Medicine and Dentistry, University of Western Australia, Nedlands, Western Australia, Australia.
{dagger} Department of Podiatry, Charles Sturt University, Albury-Wodonga, New South Wales, Australia.
{ddagger} Department of Health Sciences, School of Physiotherapy, Curtin University of Technology, Bentley, Western Australia, Australia.

Corresponding author: Alan R. Bryant, PhD, Podiatric Medicine, Faculty of Medicine and Dentistry, University of Western Australia, M501, Ground Fl, N Block, QEII Medical Centre, Nedlands, 6009 Western Australia, Australia.

Abstract

We describe the effects of the Austin bunionectomy on plantar pressure distribution and radiographic measurements in the forefoot in 31 subjects (44 feet) with mild-to-moderate hallux valgus deformity and 36 control subjects (36 feet). Plantar pressure measurements before and 24 months after surgery showed peak pressure beneath the hallux reduced to normal values. Peak pressure measurements beneath the first, second, and third metatarsal heads in hallux valgus feet were relatively unchanged after surgery and remained higher than normal values. The operation produced significant decreases in mean preoperative radiographic measurements of hallux abductus, metatarsus primus varus, and first metatarsal protrusion distance in these patients to below-normal values. (J Am Podiatr Med Assoc 95(4): 357–365, 2005)




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