Cyclic variations in multiplanar knee laxity influence landing biomechanics.

ABSTRACT:

Purpose

Females vary substantially in their multiplanar cyclic knee laxity changes across the menstrual cycle. The biomechanical implications of these cyclic changes are relatively unknown. Our purpose was to first cluster females based on their cyclic changes in anterior knee laxity (AKL), genu recurvatum (GR), varus-valgus (VV), and internal-external (IER) rotation knee laxity across the menstrual cycle. We then compared changes in landing biomechanics from days of minimum to maximum laxity between female clusters and a group of males.

Methods

A total of 49 males and 71 females were measured for AKL, GR, VV, and IER and underwent biomechanical analysis of a double-leg drop jump (0.45 m) at two time points: day of minimum (T₁) and maximum (T₂) AKL in each female across her

SUBMITTER: Shultz SJ 

PROVIDER: S-EPMC12335006 | biostudies-literature | 2012 May

REPOSITORIES: biostudies-literature