[Dynamic observation of the biomechanic properties of sciatic nerve at the suture site in rats following repairing].
OBJECTIVE
To observe the biomechanic properties of sciatic nerve at the suture site in rats following repairing.


METHODS
The right sciatic nerves of 40 white Sprague-Dawley 300-350 gm rats were exposed, cut and then repaired with 10-0 nylon sutures, laced in the epineurium. 0, 1, 3, 6 weeks after operation, the tensile strength of the sciatic nerves were measured, the data analyzed statistically.


RESULTS
The load-elongation curves for both the normal unoperated and operated nerves had the similar shape. The tensile strength of the 0 week was significant difference to 1, 3 and 6 weeks (P < 0.01). No significant difference was found among 1, 3 and 6 weeks.


CONCLUSIONS
The tensile strength of the injured nerves are recovered in the first week and resistant in 6 weeks after repairing.
Yan
Jia-zhi
JZ
Department of Trauma and Orthopedics, People's Hospital of Peking University, Beijing 100044, China.
Jiang
Bao-guo
BG
Zhao
Fu-qiang
FQ
Wei
Guang-ru
GR
Shang
Yong-gang
YG
Zhang
Pei-xun
PX
Liu
Bo
B
Zhang
Hong-bo
HB
D000818:Animals; D004548:Elasticity; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D012584:Sciatic Nerve / Q000293:injuries / Q000502:physiology* / Q000601:surgery*; D013718:Tensile Strength; D013997:Time Factors