Diabetes Care, Vol 20, Issue 4 637-641, Copyright © 1997 by American Diabetes Association
Therapeutic footwear can reduce plantar pressures in patients with diabetes and transmetatarsal amputation
MJ Mueller, MJ Strube and BT Allen
Program of Physical Therapy, Washington University School of Medicine, St. Louis, Missouri 63110, USA.
OBJECTIVE: To compare how footwear (full-length shoe or short shoe), a
total contact insert, a rigid rocker-bottom (RRB) sole, and an ankle-foot
orthosis (AFO) affect peak plantar pressure (PPP) on the distal residuum
and contralateral extremity of patients with diabetes and transmetatarsal
amputation (TMA). RESEARCH DESIGN AND METHODS: Thirty patients with
diabetes and TMA participated (mean age 62 +/- 4 years). In-shoe plantar
pressures during walking were measured in six types of footwear. Each
measurement occurred after a 1-month adjustment period. Repeated measure
analysis of variance (ANOVA) was used to compare treatments. RESULTS: All
five types of therapeutic footwear reduced plantar pressures compared with
regular shoes with a toe-filler (P < 0.05). A full-length shoe, total
contact insert, and RRB sole resulted in lower pressures on the distal
residuum (222 vs. 284 kPa) and forefoot of the contralateral extremity (197
vs. 239 kPa), compared with a regular shoe and toe-filler. Footwear with an
AFO showed reduced PPP on the residuum, but most patients complained of
reduced ankle motion during walking. A short shoe reduced pressures on the
residuum, but not on the contralateral extremity, and many patients had
complaints regarding cosmesis of the shoe. CONCLUSIONS: The full-length
shoe, total contact insert, and an RRB sole provided the best pressure
reduction for the residuum and contralateral foot, with the optimal
compromise for cosmetic acceptance and function.