[Intracystic allograft in management of long bone cyst merging pathologic fracture].

OBJECTIVE

To investigate the efficiency of intracystic allograft fixed with bone plate and steel plate in management of long bone cyst merging pathologic fracture.

METHODS

Twelve cases of long bone cysts with pathologic fractures were treated from January 1996 to April 2002. The median dimension of the cyst on the radiograph was 3. 6 cm x 8.1 cm. We regularly revealed the sites of cysts, cut the anterior wall, got cystic membrane away, implanted allo-bone fibula, ulna or radius shafts which were defatted and deproteined. The auto-bone and the allo-bone of all cases were fixed with bone plate and steel plate; external fixation was managed for 3 weeks after operation.

RESULTS

All incisions achieved primary healing. All cases were followed up 2. 7 years on average. According to Capanna's standard, 9 cases completely healed, 3 cases basically healed, no cases recurred. The function in shoulder joint was slightly limited in 2 cases that cysts were located on the upper humerus, while that of the other 10 cases were recovered completely.

CONCLUSION

Intracystic allograft fixed with bone plate and steel plate is safe and effective in management of long bone cyst merging pathologic fracture.