ArticleGait & posture2026
The effect of proximal cuff design on limb loading and mechanics during gait with carbon fiber custom dynamic orthoses, in unimpaired individuals.
Article in Gait & posture, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundLimb trauma often results in long-term disability. Carbon fiber custom dynamic orthoses (CDOs) include a proximal cuff, posterior strut, and footplate, and improve outcomes following limb trauma, but the effects of cuff design are not well understood. RESEARCH QUESTION: Does CDO cuff design influence limb mechanics, foot loading, or CDO comfort?
methodsFifteen unimpaired individuals completed testing without an orthosis (NoCDO) and in a CDO with four interchangeable cuffs: anterior shell with straps, patellar tendon bearing shell with ratcheting system, patellar tendon bearing shell with pivot point and straps, flexible shell with strap. Joint kinematic, kinetic, and plantar force data were collected as participants walked at a controlled speed.
resultsThere were no significant differences in ankle mechanics or foot loading between cuffs. CDO use had the greatest effect on the ankle, effectively stiffening the joint and significantly decreasing motion, increasing dorsiflexion moment, and decreasing power absorption and generation for all cuffs compared to NoCDO. CDO use redistributed forces from the forefoot to the hindfoot, resulting in significantly lower peak forefoot force and forefoot impulse and higher hindfoot impulse with all cuffs compared to NoCDO. SIGNIFICANCE: Study results indicate that multiple cuffs, representative of clinical practice and previous research, had a similar effect on gait mechanics, foot loading, and comfort. The limited differences suggest that clinicians could select the cuff best suited to patient needs outside of limb motion and loading such as ease of donning and doffing, available range of motion, or preference.
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