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Abnormal patient data for the isostation b100.

R H Seeds, J A Levene, H M Goldberg

    The Journal of Orthopaedic and Sports Physical Therapy
    |January 1, 1988
    PubMed
    Summary
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    Subacute low back pain patients showed significant differences in torque and range of motion compared to healthy individuals using the lsostation B100. Females exhibited greater discrepancies, with reduced crossover activity potentially indicating guarded effort.

    Area of Science:

    • Biomechanics
    • Orthopedics
    • Sports Medicine

    Background:

    • Low back pain is a prevalent condition affecting individuals of all ages.
    • Objective measurement of functional deficits in subacute low back pain is crucial for effective rehabilitation.
    • Previous studies have established baseline values for normal torque and range of motion.

    Purpose of the Study:

    • To document torque and range of motion parameters in subacute low back pain patients (2-7 days post-injury) using the lsostation B100.
    • To compare objective measurements from patients with abnormal values to normative data from a previous study.
    • To identify specific biomechanical differences associated with subacute low back pain.

    Main Methods:

    • 172 participants (143 males, 29 females) with subacute low back pain were evaluated.

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  • Three tests were administered using the lsostation B100: range of motion in each plane, repetitive flexion/extension, and a modified maximum lift.
  • Torque and range of motion data were collected and compared between patient and normal groups.

    • Main Results:

    • Significant differences (p=0.01) in torque and range of motion parameters were observed between normal and abnormal groups across all tests.
    • Discrepancies between normal and abnormal values were more pronounced in females than males.
    • Torque output was significantly affected in the flexion/extension axis, while range of motion was most affected in extension for both sexes.
    • Reduced crossover activity (crosstalk) in repetitive flexion/extension tests may indicate guarded or poor effort.

    Conclusions:

    • The lsostation B100 provides valuable objective data for assessing torque output and range of motion in low back pain patients.
    • Significant biomechanical alterations are present in subacute low back pain, differing between sexes.
    • Reduced inter-segmental motion and torque variability may serve as indicators of altered motor control strategies in low back pain.