title: Proprioception and performance after anterior cruciate ligament rupture.
abstract: The aim of this study was to investigate the characteristics of proprioception in patients with an anaterior-cruciate-ligament (ACL)-injured knee and to determine whether there is a correlation between proprioception and performance. We studied 32 patients with unilateral isolated ACL ruptures. Proprioception of the knee was evaluated by examining the joint position sense. Functional performance was evaluated with the one-leg hop (OLH) and one-leg vertical jump (OLV) tests. The mean error angle of the joint position sense was 3.6+/-1.5 degrees on the intact side and 5.2+/-1.9 degrees on the injured side. The joint position sense was thus clearly reduced on the injured side (p<0.05). The distance of jumping in the OLH test and the height of jumping in the OLV test was also clearly reduced on the injured side compared with that on the intact side (p<0.01) both with and without visual control. Moreover, we found a significant correlation between proprioception and performance in the ACL-injured knees, and this correlation was more distinct with visual deprivation. In conclusion, decreased proprioception in patients with ACL deficiency reduced their functional ability.
authors.affiliation: Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi-shi, Gunma-ken, 371-8511, Japan.
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Katayama
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Higuchi
authors.forename: Masashi
authors.initials: M
authors.lastname: Kimura
authors.forename: Atsushi
authors.initials: A
authors.lastname: Kobayashi
authors.forename: Kazuhisa
authors.initials: K
authors.lastname: Hatayama
authors.forename: Masanori
authors.initials: M
authors.lastname: Terauchi
authors.forename: Kenji
authors.initials: K
authors.lastname: Takagishi
mesh_terms: D000293:Adolescent; D000328:Adult; D016118:Anterior Cruciate Ligament / Q000601:surgery; D000070598:Anterior Cruciate Ligament Injuries; D005260:Female; D006801:Humans; D007718:Knee Injuries / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D010808:Physical Examination / Q000379:methods; D004856:Postural Balance / Q000502:physiology; D011336:Probability; D011434:Proprioception / Q000502:physiology*; D011446:Prospective Studies; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology*; D012421:Rupture / Q000000981:diagnostic imaging / Q000601:surgery; D012494:Sampling Studies; D012680:Sensitivity and Specificity