Length changes and their significance of scapholunate interosseous ligament at forearm rotation and wrist hyperextension
10.3760/cma.j.issn.1001-8050.2015.03.014
- VernacularTitle:前臂旋转和腕关节过伸时舟月骨间韧带长度变化及其意义
- Author:
Jing CHEN
;
Jun TAN
;
Jinbo TANG
- Publication Type:Journal Article
- Keywords:
Wrist joint;
Ligaments;
Scapholunate
- From:
Chinese Journal of Trauma
2015;31(3):236-240
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the length changes of scapholunate interossous ligament (SLIL) at wrist full extension and forearm rotation and the related significance.Methods Eighteen healthy volunteers (12 males and 6 females) aged at 20-38 years (mean,28 years) were divided into forearm rotation group,wrist hyperextension group and wrist hyperextension-rotation group according to the random number table,with 6 cases per group.CT images of the wrist were analyzed and reconstructed in three-dimensions.Length of SLIL in dorsal,proximal and palmar segments was measured in different settings and compared.Results Conpared with the neutral position,lengths of palmar SLIL in distal,middle and proximal parts increased by (1.4 ±0.5)mm,(1.4 ±0.4)mm and (1.3 ±0.4)mm respectively in wrist hyperextension and increased by (0.3 ± 0.1) mm,(0.2 ± 0.1)mm and (0.3 ± 0.1)mm respectively in forearm maximal pronation.At the positions of wrist full extension,hyperextension with radial deviation or forearm maximal rotation,the palmar and part of proximal SLIL were elongated significantly (P ＜ 0.05).At forearm maximal pronation,palmar and part of proximal SLIL were elongated (P ＜ 0.05).Conclusions At wrist full extension,strain is greater in the palmar and proximal components of the SLIL.SLIL is inclined to injury at wrist hyperextension and forearm rotation.
