| Summary: | 博士 === 國立臺灣師範大學 === 體育學系 === 102 === Purpose: To evaluate functional movements after returning to sports following anterior cruciate ligament reconstruction (ACLR) and to access the effectiveness of the functional knee brace during functional movements. Method: Ten athletes with a history of unilateral ACLR surgery were served as experimental group (Age: 22.4±1.0 years old; Height: 169.4±8.6 cm; Weight: 65.6±10.7 kg; Time from injury to surgery: 5.6±5.1 months; Time since surgery: 24.5±16.3 months) and 10 sex-, age-, height-, weight- and sport-matched athletes were served as control group (Age: 21.5±1.8 years old; Height: 167.6±8.3 cm; Weight: 64.1±11.6 kg). First, all subjects were required to complete knee muscle strength and hop performance tests to understand their recovery state. Second, all subjects needed to complete cutting and jump-landing protocol. Nonparametric test was used to compare each parameter (α = .05). Conclusion: Although the ACLR athletes have restored their knee muscle strength, abnormal knee kinematics, joint coordination and dynamic postural stability still existed during cutting and jump-landing tasks. It is possible that such lacks in ACLR athletes were associated with their poor proprioceptive function, and this might affect their neuromuscular control ability. However, such lacks have been improved while wearing a functional knee brace, which might attribute to the knee design and it may stimulate the proprioceptive receptors around the knee. Hence, wearing a function knee brace may improve the neuromuscular control ability after ACLR and reduce the rate of second injury.
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