Radiographic Evaluation of Carpal Bone Mechanics and the Scapholunate Angle in a Clenched Fist With Dynamic CT Imaging

Description

In this presentation, Alexandra Munn, a fourth-year orthopedic resident from Memorial University, provides an overview of her research on hand kinematics, specifically focusing on the radiographic evaluation of carpal biomechanics and the schapholunate angle using dynamic CT imaging. She explains the intricacies of the normal carpus, the crucial role of the schapholunate complex, and how injuries to this area can lead to significant consequences for hand function.



Munn discusses the complexities involved in diagnosing schapholunate ligament injuries, outlining how traditional radiographic techniques often fail to provide timely diagnoses. She emphasizes the advantages of dynamic CT imaging, which allows for detailed motion analysis of the wrist, enabling the visualization of subtle positional changes in carpal bone relationships during various hand movements.



The study involved 15 participants, employing a specific CT scanning protocol to measure the schapholunate angle across a range of wrist positions. Findings indicated a normal angle range within expected values and explored angular variations during movement. Munn concludes by acknowledging the limitations of their study and highlighting the potential for dynamic imaging to enhance diagnostic accuracy and could ultimately serve as a standard protocol for future assessments of wrist motion.

DOI: 10.1302/3114-220787

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