Plantar Loading During Cutting While Wearing a Rigid Carbon Fiber Insert.
Abstract
Context : Stress fractures are one of the most common injuries in sports, accounting
for approximately 10% of all overuse injuries. Treatment of fifth metatarsal stress
fractures involves both surgical and nonsurgical interventions. Fifth metatarsal stress
fractures are difficult to treat because of the risks of delayed union, nonunion,
and recurrent injuries. Most of these injuries occur during agility tasks, such as
those performed in soccer, basketball, and lacrosse. Objective : To examine the effect
of a rigid carbon graphite footplate on plantar loading during 2 agility tasks. Design
: Crossover study. Setting : Laboratory. Patients or Other Participants : A total
of 19 recreational male athletes with no history of lower extremity injury in the
past 6 months and no previous metatarsal stress fractures were tested. Main Outcome
Measure(s) : Seven 45° side-cut and crossover-cut tasks were completed in a shoe
with or without a full-length rigid carbon plate. Testing order between the shoe conditions
and the 2 cutting tasks was randomized. Plantar-loading data were recorded using instrumented
insoles. Peak pressure, maximum force, force-time integral, and contact area beneath
the total foot, the medial and lateral midfoot, and the medial, middle, and lateral
forefoot were analyzed. A series of paired t tests was used to examine differences
between the footwear conditions (carbon graphite footplate, shod) for both cutting
tasks independently (α = .05). Results : During the side-cut task, the footplate increased
total foot and lateral midfoot peak pressures while decreasing contact area and lateral
midfoot force-time integral. During the crossover-cut task, the footplate increased
total foot and lateral midfoot peak pressure and lateral forefoot force-time integral
while decreasing total and lateral forefoot contact area. Conclusions : Although a
rigid carbon graphite footplate altered some aspects of the plantar- pressure profile
during cutting in uninjured participants, it was ineffective in reducing plantar loading
beneath the fifth metatarsal.
Type
Journal articlePermalink
https://hdl.handle.net/10161/8903Published Version (Please cite this version)
10.4085/1062-6050-48.6.18Publication Info
Queen, Robin M; Abbey, Alicia N; Verma, Ravi; Butler, Robert J; & Nunley, James A (2014). Plantar Loading During Cutting While Wearing a Rigid Carbon Fiber Insert. J Athl Train. 10.4085/1062-6050-48.6.18. Retrieved from https://hdl.handle.net/10161/8903.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
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Show full item recordScholars@Duke
Robert John Butler
Adjunct Associate Professor in the Department of Orthopaedic Surgery
Construction of standards for a functional testing continuum for ACL patients to optimize
durability and performance.Development of field expedient tests to predict musculoskeletal
injury. Predictors of the early presentation of knee osteoarthritis following a joint
injury.
James Albert Nunley II
Goldner Jones Distinguished Professor of Orthopaedic Surgery
My current research interests are both clinical and basic science. Currently, in
the Orthopaedic Research Laboratory, we are investigating the biomechanical properties
of the deltoid ligament in the ankle. This is a clinically relevant problem and we
will hopefully identify ways to improve the correction of the adult relaxed flat foot.
We are also performing a preliminary investigation into the blood supply of the distal
tibia to look for a vascularized bone transfer. We have
Robin Marie Queen
Assistant Professor of Orthopaedic Surgery
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