Introduction: Piriformis syndrome is a frequent pathology in the athlete. Diagnostic delay is often observed. Summary of the facts: A young man of 14 years old, a high-level judoka, presented a febrile right hip pain. Clinical examination coupled with imaging and biology revealed a Staphylococcus aureus pyomyositis of the piriformis muscle. This infection required a medical treatment only. The adolescent had to observe two-month rest period. Conclusion: Repeated or high-kinetic trauma causes muscular pathologies specific to high-level athletes. A deep hematoma of the gluteal region may become superinfect and cause an abscess of the pyriform muscle.
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