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Unicameral bone cysts treated by injection of bone marrow or methylprednisolone

Department of Orthopaedic Surgery, Chang Gung Children Hospital, 5 Fu-Shing Road, Taoyuan, Taiwan.

R. P. Stanton, MD, Assistant Professor

Department of Orthopaedic Surgery, Alfred I. duPont Hospital for Children, 1600 Rockland Road, PO Box 269, Wilmington, Delaware 19899, USA.

J. Glutting, PhD, Professor

School of Education, University of Delaware, 221B Willard Hall Education Building, Newark, Delaware 197161, USA.

Correspondence should be sent to Dr R. P. Stanton.

In 79 consecutive patients with unicameral bone cysts we compared the results of aspiration and injection of bone marrow with those of aspiration and injection of steroid. All were treated by the same protocol. The only difference was the substance injected into the cysts. The mean radiological follow-up to detect activity in the cyst was 44 months (12 to 108). Of the 79 patients, 14 received a total of 27 injections of bone marrow and 65 a total of 99 injections of steroid. Repeated injections were required in 57% of patients after bone marrow had been used and in 49% after steroid. No complications were noted in either group. In this series no advantage could be shown for the use of autogenous injection of bone marrow compared with injection of steroid in the management of unicameral bone cysts.

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