BIOMECHANICAL ASSESSMENT OF UNILATERAL AND BILATERAL LANDING SYMMETRY DURING REHABILITATION FOLLOWING ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION (ACLR)
Journal Title: Medycyna Sportowa - Year 2011, Vol 27, Issue 3
Abstract
The aim of the study is the biomechanical assessment of unilateral and bilateral jump symmetry in the landing phase in post-ACLR rehabilitation patients.A group of 20 post-ACLR patients (males) underwent 4-stage physiotherapy-based rehabilitation. A tensometric platform was used to measure vertical ground reaction forces (VGRF) during unilateral and bilateral jumps in operated and non-operated lower limbs. Maximum (peak) and mean VGRF values and the number of jumps performed were recorded on average at 15, 23 and 36 weeks post-ACLR. We calculated the deficit (%) of these parameters between the lower limbs. At 15 weeks post-ACLR, VGRF during the landing was significantly lower, and unilateral and bilateral jumps on operated limbs in comparison with non-operated limbs. VGRF of operated limbs was noted to increase at 23 weeks with significant differences between the study parameters. The deficit of VGRF max between the limbs decreased to approx. 10% for the unilateral jump and 13% for the bilateral jump. However, the mean of 6 best bilateral jumps was 18%. At 36 weeks post-ACLR VGRF values were similar between limbs and there were no statistically significant differences (deficit of 5-8%).Between 23 and 36 weeks of systematic rehabilitation following ACLR, the patients achieved similar symmetrical VGRF values in the landing phase during unilateral and bilateral jumps for operated and non-operated limbs.
Authors and Affiliations
Andrzej Czamara
Keywords
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