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J Korean Acad Rehabil Med. 1997 Apr;21(2):444-448. Korean. Case Report.
Song Y , Hwang Y , Park I .
Department of Rehabilitation Medicine, Inje University College of Medicine, Korea.

Motor point block with phenol solution has the advantage of technical ease, bedside performance, and repetition as necessary in reducing spasticity. To our knowledge, however, complicating stress fracture that occur during the course of treatment after motor point block has not been described. We report the occurance of stress fracture of the head of right talus after motor point block with phenol solution. A 17-year-old boy had a gait disturbance due to excessive plantar flexion and inversion of right ankle by spasticity. Percutaneous motor point block to right tibialis posterior and right gastrocnemius was done with 7% aqueous phenol solution. Just after the block, he began to bear his weight on right heel and physical therapy including gait training was started. He complained of right ankle pain a week after resumption of weight-bearing while walking. Bone scan and magnetic resonance imaging of right ankle revealed stress fracture of talus of right foot. This case illustrated that physiatrists involved in the management of such patients should be aware that secondary stress fractures can occur.

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