Vibratory Sense Unimpaired in Knee-Injured Patients

Vibratory perception threshold intact in anterior cruciate ligament-injury, meniscectomy

THURSDAY, Jan. 5 (HealthDay News) -- For knee-injured patients, the vibratory perception threshold (VPT) is not impaired in those at high risk of knee osteoarthritis, according to a study published in the January issue of Arthritis Care & Research.

Jonas Bloch Thorlund, from the University of Southern Denmark in Odense, and colleagues measured the VPT at the medial malleolus (MM) and medial femoral condyle (MFC) in two independent groups of patients with high risk of future osteoarthritis. The groups comprised 39 young anterior cruciate ligament (ACL)-injured patients with 28 matched controls (mean age, 24.0 versus 25.6 years, respectively) and 22 middle-aged meniscectomized patients and 25 age-matched controls (mean age, 49.6 versus 49.4 years, respectively).

The investigators found that the VPT at the MM was significantly better in ACL-injured patients than controls, and persisted after adjusting for age and gender. A similar trend in favor of ACL-injured patients was seen at the MFC (unadjusted P = 0.093, adjusted P = 0.122). The VPT at the MM was not significantly different for meniscectomized patients and controls. However, meniscectomized patients had a tendency for better VPT at the MFC than controls (unadjusted P = 0.085, adjusted P = 0.092).

"Impaired vibratory sensation could not be confirmed in two independent groups of patients compared to age-matched controls," the authors write.

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