[Study and clinical application of auto-compressive and anti-rotate intramedullary nail].
OBJECTIVE
To design an auto-compressive and anti-rotate intramedullary nail (ACACIN) and to evaluate the preliminary clinical efficacy on fixing adult femur fracture.


METHODS
From January 1998 to June 2001, 23 patients with femur fracture were stabilized with auto-compressive and anti-rotate intramedullary nail. 2-4 elastic blocks were installed into the proximal and distal different distance of quincunx nail to defend rotate and axis compress.


RESULTS
Fracture healing were obtained in all 23 patients treated with auto-compressive and anti-rotate intramedullary nail, the time of fracture healing was 6-13 weeks in 21 cases and 15-22 weeks in 2 cases of old fracture. There was no complication related to infection, nail break, abnormal union and joint ankylosis. The results were excellent in 19 cases, good in 3 cases, and moderate in 1 case according Kolmert's criterion for function; the effective rate was 95.7%.


CONCLUSIONS
Auto-compressive and anti-rotate intramedullary nail has a suitable radian for adult femur, can afford stable fixation, anti-rotate and axis compress.
Wan
Li
L
Department of Orthopedics, Shajing People's Hospital, Shenzhen Guangdong, P.R. China 518104.
Xu
Da-chuan
DC
Jiang
Zhen-hua
ZH
Fan
Shi-cai
SC
Zhang
Ri-hua
RH
Li
Chun-hua
CH
D000293:Adolescent; D000328:Adult; D001858:Bone Nails; D004867:Equipment Design; D005260:Female; D005264:Femoral Fractures / Q000601:surgery*; D005500:Follow-Up Studies; D005594:Fracture Fixation, Intramedullary; D006801:Humans; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome