Osteoblastomas were originally thought to be lesions that could be controlled with minimal local therapy, including curettage. However, at least some of the osteoblastomas with an unexpectedly active clinical course had histologic features which differed from ordinary osteoblastomas, and the term aggressive osteoblastoma was given to these lesions. In the aggressive osteoblastoma the osteoblasts are cytologically atypical. In addition, the well organized trabecular patterns of typical osteoblastoma is partly lacking, especially in the areas that are rich in atypical osteoblasts. The case report deals a case of aggressive osteoblastoma of the left iliac wing in a 44 year old male. The interesting radiologic manifestationa(plain x-ray CAT and radionuclide bone scan) and characteristic histologic findings are presented along with review of pertinent literatures.

Injuries to the tarsometatsrsal joint are not common, and the results or treatment are often unsatisfactory. Whatever the severity of the initisl injury, prognosis depends on accurate reduction and its maintenance. 5 cases of fracture and dislocation of the tarsometatarsal joint were treated at Department of Orthopaedic Surgery, Capital Armed Forces General Hospital. The length of follow-up period ranged from 12 months to 18 months, with a mean of 15 months.
Arm ; Dislocations ; Follow-Up Studies ; Hospitals, General ; Joints ; Prognosis

A review of sixteen cases of the modified Bristow operation for recurrent anterior dislocation of the shoulder from Feb. 1987 to Feb. 1989 was presented and the following results were obtained. 1. The age of initial dislocation varied from 12 years to 27 years of age with the average of 17.3 years. 2. The age at operation varied from 21 years to 30 years of age with the average of 23.3 years. 3. The times of dislocation vaaried form 7 to 40 times with the average 23.8 times. 4. The average loss of abduction and external rotation were 5.9 and 12.5 degree respectively. 5. The complications and recurrence were not observed in this period
Dislocations ; Recurrence ; Shoulder