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  • Title: Landing mechanics during single hop for distance in females following anterior cruciate ligament reconstruction compared to healthy controls.
    Author: Trigsted SM, Post EG, Bell DR.
    Journal: Knee Surg Sports Traumatol Arthrosc; 2017 May; 25(5):1395-1402. PubMed ID: 26044352.
    Abstract:
    PURPOSE: To determine possible differences in single-hop kinematics and kinetics in females with anterior cruciate ligament reconstruction compared to healthy controls. A second purpose was to make comparisons between the healthy and reconstructed limbs. METHODS: Subjects were grouped based on surgical status (33 ACLR patients and 31 healthy controls). 3D motion capture synchronized with force plates was used to capture the landing phase of three successful trials of single hop for distance during a single data collection session. Peak values during the loading phase were analysed. Subjects additionally completed three successful trials of the triple hop for distance Tegner activity scale and International Knee Document Committee 2000 (IKDC). RESULTS: Controls demonstrated greater peak knee flexion and greater internal knee extension moment and hip extension moment than ACLR subjects. Within the ACLR group, the healthy limb exhibited greater peak knee flexion, hip flexion, hip extension moment, single hop and triple hops for distance and normalized quadriceps strength. CONCLUSION: Patients who undergo anterior cruciate ligament reconstruction land in a more extended posture when compared to healthy controls and compared to their healthy limb. LEVEL OF EVIDENCE: III.
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