Di̇z eklem hi̇permobi̇li̇tesi̇ni̇n eklem pozi̇syon hi̇ssi̇ne etki̇si̇

Proprioception is defined as the ability to detect the position of body parts with respect to another (position sense) and the ability to detect the onset and the direction of the joint movement (kinesthesia). Kinesthesia of the knee joint was found to be impaired in hypermobility syndrome. The aim of this study is to evaluate the joint position sense of the knee in hypermobile subjects without any musculoskeletal symptoms. Thirty-two healthy volunteer college students with a mean age of 19.6±0.9 were included in the study. A brief medical history was completed and a screening exam was performed. The physical activity as sports and dance participation was also questioned. Beighton and Bulbena scoring system were used to investigate generalized joint hypermobility (GJH) and the knee joint hypermobility (KJH). Joint position sense was evaluated at the dominant extremity as both active and passive repositioning at 15° and 40° flexion positions into both flexion and extension directions with Cybex Norm Dynamometer. Nineteen of the subjects had GJH whereas 10 had KJH. There was no significant difference in terms of age, physical activity and joint position sense between subjects with and without GJH (p>0.05). When subjects with KJH were compared to subjects without KJH, they had poorer position sense at 40° flexion (p=0.05) and 15° extension (p=0.05). In conclusion, the subjects with knee joint hypermobility may have poorer knee joint position sense although they do not have any musculoskeletal symptoms.