Cross-Sectional Investigation of Acute Changes in Ultrasonographic Markers for Biceps and Supraspinatus Tendon Degeneration After Repeated Wheelchair Transfers in People With Spinal Cord Injury

Objective: The objectives of this work were to investigate how wheelchair transfers influence acute changes in ultrasound markers for biceps and supraspinatus tendon degeneration and to determine how such changes correlate with transfer technique and demographic characteristics. Design: Participants underwent quantitative ultrasound examinations for markers of biceps and supraspinatus tendon degeneration (tendon width, echogenicity, variance, and contrast) before and after a stressful repeated-transfers protocol. The Transfer Assessment Instrument was completed for each participant to identify transfer skills. Linear regression tested whether demographics and transfer skills correlated with ultrasound measures. Results: Sixty-two wheelchair users with spinal cord injury were included (39 with paraplegia and 23 with tetraplegia). Biceps tendon width increased after repeated transfers (P

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