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Related Experiment Video

Updated: Mar 20, 2026

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact
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Scaphoid tuberosity excursion is minimized during a dart-throwing motion: A biomechanical study.

Frederick W Werner1, Levi G Sutton1, Niladri Basu1

  • 1Department of Orthopedic Surgery, SUNY Upstate Medical University, Syracuse, NY, USA.

Journal of Hand Therapy : Official Journal of the American Society of Hand Therapists
|June 7, 2016
PubMed
Summary

The dart-throwing motion significantly minimizes scaphoid tuberosity excursion, indicating reduced scaphoid motion. This finding is crucial for minimizing ligament loading during wrist rehabilitation after injury.

Keywords:
Dart-throwing motionRehabilitation after carpal injuryScaphoid tuberosityScapholunate interosseous ligament injury

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Area of Science:

  • Orthopedic biomechanics
  • Hand and wrist surgery

Background:

  • Scaphoid motion is a critical factor in wrist joint loading.
  • Understanding scaphoid kinematics is essential for effective rehabilitation protocols.

Purpose of the Study:

  • To evaluate if the dart-throwing motion minimizes scaphoid tuberosity excursion, serving as a proxy for scaphoid motion.

Main Methods:

  • Utilized 29 cadaver wrists to measure scaphoid tuberosity excursion.
  • Compared motion during dart-throwing, wrist flexion-extension, and radioulnar deviation.

Main Results:

  • Scaphoid tuberosity excursion was significantly lower during the dart-throwing motion compared to other tested movements.
  • Demonstrated a biomechanical advantage of the dart-throwing motion in limiting scaphoid displacement.

Conclusions:

  • The dart-throwing motion offers a potentially safer early mobilization strategy post-injury by minimizing scaphoid motion.
  • This approach may reduce stress on healing carpal ligaments and distal radius structures during rehabilitation.