Sonesson S, Kvist J. Bilateral changes in knee joint laxity during the first year after non-surgically treated anterior cruciate ligament injury.
Phys Ther Sport 2022;
58:173-181. [PMID:
36368151 DOI:
10.1016/j.ptsp.2022.10.011]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVES
Analyse changes in knee laxity between 3, 6, 12 and 24 months after non-surgically treated ACL injury and to analyse associations between knee laxity and knee function, self-reported knee stability, ACL-Return to Sport after Injury (ACL-RSI), fear and confidence at different timepoints during recovery.
DESIGN
Prospective cohort study.
PARTICIPANTS
125 patients (67 males, mean age 25.0 ± 7.0 years) with acute ACL injury.
MAIN OUTCOME
Laxity was measured using KT-1000 arthrometer. Self-reported knee function was assessed using the International Knee Documentation Committee Subjective Knee Form (IKDC-SKF). Confidence and fear were assessed with questions from the ACL-RSI scale. Subjectively knee stability was assessed using SANE.
RESULTS
Knee laxity increased bilaterally from 3 to 12 months, and in the non-involved knee from 3 to 24 months (p˂0.05), although mean change was below 1 mm. Side-to-side difference in knee laxity was correlated with IKDC-SKF (r = -0.283) and knee stability in rehabilitation/sport activities (r = -0.315) at 6 months, but not with confidence/fear.
CONCLUSION
Knee laxity increased bilaterally during the first year after non-surgically treated ACL injury, though, the mean change in knee laxity was below 1 mm and the clinical significance is unknown. Knee laxity was weakly associated with knee function and perceived knee stability.
LEVEL OF EVIDENCE
Level II TRIAL REGISTRATION: NCT02931084.
Collapse