Plantar loading during jumping while wearing a rigid carbon graphite footplate
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Fifth metatarsal stress fractures are common in sports and often result in delayed and non-union. The purpose of this study was to examine the effect of a rigid carbon graphite footplate (CGF) on plantar loading during take-off and landing from a jump. Nineteen recreational male athletes with no history of lower extremity injury in the past 6 months and no foot or ankle surgery in the past 3 years participated in this study. Subjects completed 7 jumping tasks while wearing a standard running shoe and then the shoe plus the CGF while plantar loading data was recorded. A series of paired t-tests were used to examine differences between the two footwear conditions independently for both takeoff and landing (α=0.05). The contact area in the medial midfoot (p<.001) and forefoot (p=.010) statistically decreased when wearing the CGFP. The force-time integral was significantly greater when wearing the CGFP in the middle (p<.001) and lateral forefoot (p=.019). Maximum force was significantly greater beneath the middle (p<.001) and lateral forefoot (p<.001) when wearing the CGFP, while it was decreased beneath the medial midfoot (p<.001). During landing, the contact area beneath the medial (p=.017) and lateral midfoot (p=.004) were significantly decreased when wearing the CGFP. The force-time integral was significantly decrease beneath the medial midfoot (p<.001) when wearing the CGFP. The maximum force was significantly greater beneath the medial (p=.047) and middle forefoot (p=.001) when the subject was wearing the CGFP. The maximum force beneath the medial midfoot (p<.001) was significantly reduced when wearing the carbon graphite footplate. The results of the study indicate that the CGF is ineffective at reducing plantar loading during jumping and landing. © 2013 Elsevier B.V.
Published Version (Please cite this version)10.1016/j.gaitpost.2013.10.002
Publication InfoQueen, Robin M; Verma, Ravi; Abbey, Alicia N; Nunley, James A; & Butler, Robert J (2014). Plantar loading during jumping while wearing a rigid carbon graphite footplate. Gait and Posture, 39(2). pp. 707-711. 10.1016/j.gaitpost.2013.10.002. Retrieved from https://hdl.handle.net/10161/8905.
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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.
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
Assistant Professor of Orthopaedic Surgery
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