Extensor carpi radialis brevis transfer to extensor pollicis longus :an anatomical study
10.3760/cma.j.issn.1001-2036.2017.03.013
- VernacularTitle:桡侧腕短伸肌腱移位拇长伸肌腱重建伸拇功能的应用解剖
- Author:
Wei YU
;
Fanbin GU
;
Xiaowei NI
;
Zhenxing WANG
;
Guang YANG
;
Ju ZHANG
;
Yueshu WANG
;
Shusen CUI
- Keywords:
Extensor carpi radialis brevis;
Extensor pollicis longus;
Tendon transfer;
Applied anatomy
- From:
Chinese Journal of Microsurgery
2017;40(3):257-259
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the anatomical basic of extensor carpi radialis brevis (ECRB) tendon transferring to extensor pollicis longus (EPL) tendon.Methods Twelve sides of ECRB and EPL in fresh adult cadaver's forearms were collected,and the anatomical model of ECRB transferring to EPL was set up in all the forearms.The anatomical parameters of EPL were measured before and after anatomical model established.Results The effective transferring length of ECRB was (3.5±0.8)cm;the maximum circumferential of ECRB and EPL were (8.5±0.8)cm and (3.6±0.3)cm (P ＞0.05),the ratio of muscle cross-sectional area was 5.57;After the anatomical model setting up,anatomic angles of EPL was (30±7)°,which was a decrease of (20±5) ° comparing with the preoperative angel of (50±9) ° (P ＞0.05);Thumb extension angle was (50± 12) °,which was a decrease of (8±3) ° comparing with the preoperative angel of (58 ± 16) ° (P＜0.05);The dorsal extension angle of first metacarpal was (12±5)o,which was a decrease of (3± 2) o comparing with the preoperative angle (15±8)° (P＞0.05);Thumb tip lifting height was (2.3±0.9) c m,which was a decrease of (1.2±0.6)cm comparing with the preoperative height (3.5±1.2)cm (P ＞0.05).Conclusion Based on the measurement of the anatomic parameters of ECRB and EPL,the ECRB has enough length and muscle force to reconstruct the function of EPL.The thumb had a good extension appearance and accorded with the rule of biomechanics after setting up the anatomical model of ECRB transferring to EPL.This study will provide the anatomical evidence for further clinical application
