Scaphoid tuberosity excursion is minimized during a dart-throwing motion: A biomechanical study

作者：Werner Frederick W^*; Sutton Levi G; Basu Niladri; Short Walter H; Moritomo Hisao; St Amand Hugo

来源：Journal of Hand Therapy, 2016, 29(2): 175-181.

DOI：10.1016/j.jht.2016.02.006

• Dart-throwing motion
• Scaphoid tuberosity
• Rehabilitation after carpal injury
• Scapholunate interosseous ligament injury

Purpose: The purpose of this study was to determine whether the excursion of the scaphoid tuberosity and therefore scaphoid motion is minimized during a dart-throwing motion.
Methods: Scaphoid tuberosity excursion was studied as an indicator of scaphoid motion in 29 cadaver wrists as they were moved through wrist flexion-extension, radioulnar deviation, and a dart-throwing motion.
Results: Study results demonstrate that excursion was significantly less during the dart-throwing motion than during either wrist flexion-extension or radioulnar deviation.
Conclusion: If the goal of early wrist motion after carpal ligament or distal radius injury and reconstruction is to minimize loading of the healing structures, a wrist motion in which scaphoid motion is minimal should reduce length changes in associated ligamentous structures. Therefore, during rehabilitation, if a patient uses a dart-throwing motion that minimizes his or her scaphoid tuberosity excursion, there should be minimal changes in ligament loading while still allowing wrist motion. Study Design: Bench research, biomechanics, and cross-sectional.
Level of evidence: Not applicable. The study was laboratory based.

• 出版日期2016-6