To evaluate the usefulness of internal fixation with modified Steinmann pins and tension band wiring technique in comminuted proximal humeral fracture with osteoporosis and the correlations among bone mineral density, age, Neer's score and period of union.

Twelve cases of comminuted proximal humeral fracture with osteoporosis were surgically treated with modified Steinmann pins and tension band technique, and followed up for an average 20.8 months (range, 6~39 months). Average age was 73.6 years old (range, 59~85 years old). Results were assessed using Neer's evaluation criteria.

Excellent results were noted in eight cases and satisfactory results in four cases. Radiological union was obtained in all cases. Two cases showed impingement syndrome of the proximal portions of Steinmann pins, which were managed by early removal of the metal. One case developed operative wound infection, which were managed by antibiotics therapy, irrigation and secondary closure.

Internal fixation using modified Steinmann pins and tension band wiring technique for proximal humeral fracture, with osteoporosis, makes complete union of fracture, minimizes risk of complications, and enables early rehabilitation by rendering relatively rigid fixation.