Radiology of Acquired Constriction Band Syndrome: An Unusual Cast Complication: A Case Report

A severe acquired constriction band in the proximal calf in an infant treated with a below-knee cast, which was protected with a waterproof sheet secured with a rubber band, is described. The radiological and computed tomography features of an elastic band causing the acquired constriction are presented for their novelty and uniqueness in the complication of cast treatment.

The waterproof covering of plaster casts in children secured with a rubber band to prevent soiling can cause an acquired constriction band, which mimics osteomyelitis. The imaging modalities showed the elastic band shadow cutting through the bone and soft tissues as demonstrated in this case. We recommend that the complication can be prevented by avoiding the use of elastic bands to hold the waterproofing covers for the cast.