Title

Tibiofemoral rotation in landing: The influence of medially and laterally posted orthotics

Abstract

Objective. To assess the relationship between foot alignment and transverse plane knee motion during a single leg-landing task. Design. Clinical trial. Setting. Hospital biomechanics laboratory. Participants. Seven healthy young women without excessive forefoot, arch, or rear-foot malalignments. Methods and measures. Varus and valgus foot malalignments were mimicked by placing 8° medial and lateral posted orthotics into the shoes before participants performed three landings from a drop jump off a 43 cm high platform. The change in tibiofemoral rotation relative to the no orthotic condition was measured. Results. The medial posted orthotic resulted in 3.1 ± 5.5° less internal tibiofemoral rotation as compared to the nonorthotic condition, while the lateral posting produced 2.6 ± 2.2° more internal tibiofemoral rotation (t = -2.51, p ≤ 0.03). Conclusions. Orthotic induced malalignments altered the magnitude of tibiofemoral rotation during a closed kinematic chain activity. Orthotic posting may be used to reduce the rotary stress on the knee during landing activities.

Department(s)

Public Health and Sports Medicine

Document Type

Article

DOI

https://doi.org/10.1016/S1466-853X(02)00115-3

Keywords

Closed-chain STJ pronation, Orthotics, Subtalar joint, Tibiofemoral

Publication Date

1-1-2003

Journal Title

Physical Therapy in Sport

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