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Postural Control after Anterior Cruciate Ligament Reconstruction and Functional Rehabilitation

Marketta Henriksson, PT, PhD^*,, Torbjörn Ledin, MD, PhD and Lars Good, MD, PhD^*

^* Orthopaedics, University Hospital, Linköping, Sweden
Otorhinolaryngology, University Hospital, Linköping, Sweden

Address correspondence and reprint requests to Marketta Henriksson, PT, PhD, Karolinska Institutet, Department of Physical Therapy, Motor Control and Physical Therapy Research Laboratory R43, Huddinge University Hospital, S - 141 86 Stockholm, Sweden.

Total sagittal knee laxity and postural control in the sagittal and frontal planes were measured in 25 patients at a mean of 36 months (range, 27 to 44) after anterior cruciate ligament reconstruction and in a control group consisting of 20 uninjured age- and activity-matched subjects. Body sway was measured in the sagittal plane on a stable and on a sway-referenced force plate in single-legged stance, double-legged stance, or both, with the eyes open and closed. Postural reactions to perturbations in the sagittal and frontal planes were recorded in the single-legged stance with the eyes open. Total sagittal plane laxity was significantly greater in the anterior cruciate ligament-reconstructed knee (11.2 mm; range, 6 to 15) than in the uninjured knee (8.9 mm; range, 6 to 12) or in the control group (6.0 mm; range, 5 to 8). In spite of this, the patients, in comparison with the controls, exhibited normal postural control except in two variables—the reaction time and the latency between the start of force movement to maximal sway in the sagittal plane perturbations. This supports the hypothesis that rehabilitation, with proprioceptive and agility training, is an important component in restoring the functional stability in the anterior cruciate ligament-reconstructed knee.

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				E. Ageberg, D. Roberts, E. Holmstrom, and T. Friden Balance in Single-Limb Stance in Patients With Anterior Cruciate Ligament Injury: Relation to Knee Laxity, Proprioception, Muscle Strength, and Subjective Function Am. J. Sports Med., October 1, 2005; 33(10): 1527 - 1535. [Abstract] [Full Text] [PDF]