control for Flexor Tendons Injuries

The objective of this study is to assess whether recreational rock climbers experience thickening of the flexor digitorum tendon in the 2nd 3rd and 4th fingers. In these fingers the study will also assess whether there is thickening of the A2 annular pulley and if there is a measurable increase in the tendon to bone distance at the level of the A2 pulley when the fingers are placed into flexion against mild resistance. This study aims to provide clinicians with an understanding of how exposure to rock climbing can lead to chronic anatomical changes to the soft tissue structures of the finger. These changes have been demonstrated in the elite rock climber population, but have yet to be studied in the much larger and growing recreational rock climbing population which consisted of nearly 10 million participants in 2021. If significant, these anatomical variations might guide the assessment of imaging and clinical decision making when managing finger injuries in patients with exposure to rock climbing. Portable ultrasound probes will be used to scan and measure the dimensions of various soft tissue structures in the hands of both rock climbers and a control population, this data will be paired with data collected in a brief survey asking about exposure to rock climbing, history of finger injuries, and style of climbing.