Bisphosphonates are potent inhibitors of bone resorption and considered as a gold standard and are generally recommended as first-line therapy in patients with osteoporosis. Though bisphosphonates are shown to significantly reduce the risk of vertebral, non-vertebral and hip fractures, recent reports suggest a possible correlation between long-term bisphosphonate therapy and the occurrence of insufficiency fractures owing to prolonged bone turnover suppression. We report a patient with non-traumatic stress fractures of bilateral femoral shafts related to long-term bisphosphonate therapy indicating the need for a critical evaluation of patients with long-term bisphosphonate therapy.
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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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