Ischial tuberosity avulsion fracture usually occurs between puberty and late adolescence where the ischial tuberosity apophysis remains open and nonossified. Avulsion commonly occurs in young athletes resulting from sudden forcible contraction of the hamstrings during sudden forceful physical activity or chronic repetitive traction. Misdiagnosing ischial tuberosity avulsion is not uncommon since the clinical presentation closely mimics that of a hamstring injury. Early recognition of the fracture is important as this will enable proper management and prevent the development of chronic pain. However, ccasionally, the diagnosis is missed on plain radiographs since the radiographic features may be absent, suble or nonspecific. We present such a case of an unsuspected ischial tuberosity avulsion fracture diagnosed on SPECT-CT.
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