[The application of external fixator for complex tissue defect in the forearm].
OBJECTIVE
To discuss the curative effect of the external fixator for complex tissue defect in the forearm.


METHODS
From May, 2005 through December, 2008, the external fixators were used in 17 patients to treat the complex tissue defect in the forearm caused by trauma. There were 11 male and 6 female, with a mean age of 25.6. All patients were accompanied with the exposure of tendon, muscle or screw. The skin defect ranged from 7 cm x4 cm to 19 cm x9 cm. All patients underwent pedicle flap repair. The flap ranged from 10 cm x 6 cm to 20 cm x 15 cm. The proximal pedicle of the flap was sutured into a tubular. The position of the pedicle was fixed by the external fixator. The pin was at the ulnar and the iliac (n=5), and the radius and the iliac (n=12). The immobilization lasted 3 to 8 weeks, 5.1 weeks in average.


RESULTS
All patients were followed up for 3 to 20 months, 11.3 in average. All pedicle flaps survived with no pressure ulcer, or no erosion in the axilla. No compartment syndrome or osteomyelitis occurred. Four to six week after surgery, the pedicle was cut. Infection occurred at the cutting end in 1 patient. The wound healed after addressing. The wound in the other 16 patients healed successfully. The fracture of the ulnar and the radius healed 8.5 or 15 weeks after surgery, 13.5 weeks in average. Eleven patients underwent second stage reshape and function restoration. The function of the hands and forearms recovered satisfactorily. Eleven patients returned to their work. Six patients can live with basic function for living.


CONCLUSIONS
The external fixator used for complex tissue defect in the forearm can keep the position of the pedicle, replacing plaster fixation. It can reduce the incidence of flap and vessel spasm, and get good outcomes.
Yang
Run-gong
RG
Department of Orthopaedics, First Affiliated Hospital of General Hospital of People's Liberation Army, Beijing 100048, China. yangrg304@tom.com
Zhang
Wei-jia
WJ
Zheng
Xiao-yong
XY
Meng
Chuan-long
CL
Hou
Shu-xun
SX
D000328:Adult; D016267:External Fixators; D005260:Female; D005500:Follow-Up Studies; D005543:Forearm Injuries / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013524:Surgical Flaps; D055815:Young Adult