How does wrist position affect the length of the distal radioulnar ligament: a three-dimensional image study in vivo?

Chen, Jing; Sun, Yu; Chen, Qing Zhong; Zhang, Ai Xian; Tan, Jun

doi:10.1007/s00276-015-1555-z

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…Several technical considerations affected this study. The thickness of CT scanning is 0.65–1 mm in most of the in vivo studies (Chen et al, 2014, 2015a, 2015b, 2015c, 2016; Tan et al, 2011; Tan et al, 2014; Tang et al, 2011; Xu and Tang, 2009). In our study, we collected CT images with scans using 1 mm slices, which is a common resolution.…”

Section: Discussionmentioning

confidence: 99%

In vivo metacarpophalanageal joint collateral ligament length changes during flexion

Sun

Sheng

Chen

et al. 2017

J Hand Surg Eur Vol

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We investigated the in vivo length changes of the collateral ligaments of metacarpophalangeal joint during flexion. We obtained computed tomography scans of index, middle, ring and little fingers at 0°, 30°, 60° and 90° of joint flexion from six hands of six healthy adult volunteers. Three of them had their dominant right hand studied, and the other three had their non-dominant left hand studied. We measured and analysed the radial and ulnar collateral ligaments of each metacarpophalangeal joint from the reconstructed images. We found that the dorsal and middle portions of the both radial and ulnar collateral ligament lengthened progressively during digital flexion and reached the maximum at 90° flexion. The length of the volar portion increased from 0° to 30° flexion and then decreased from 30° to 60° flexion, reaching the minimum at 90°. In conclusion, three portions of collateral ligaments on both sides of the metacarpophalangeal joint have variable length changes during flexion, which act to stabilize the joint through its flexion arc.

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