article · International Journal of Surgery Case Reports
Osteochondroma is the most frequent benign bone tumour, yet its occurrence at the anterior inferior iliac spine is exceptionally rare. This report documents the case of a twenty-year-old male who suffered from painful external snapping hip syndrome for three years, which worsened with movement. Clinical examination identified a firm, non-tender mass in the left anterior groin. Diagnostic radiographs and computed tomography scans showed a sessile bony growth arising from the anterior inferior iliac spine, which mechanically irritated the rectus femoris muscle. The tumour was surgically removed using an anterior Smith-Petersen approach, and histopathology confirmed the diagnosis of osteochondroma. Following the operation, the patient achieved complete symptom resolution, returned to full physical activity, and exhibited no tumour recurrence after one year of follow-up monitoring.
Hip pain and mechanical snapping can stem from unexpected anatomical sources. Documenting unusual presentations of common tumours helps orthopaedic surgeons and radiologists correctly diagnose rare pelvic growths. Prompt identification and standard surgical intervention can entirely resolve debilitating joint symptoms and prevent prolonged, unnecessary discomfort in young and active individuals.
The abstract does not indicate an application pathway for commercialisation, as it describes a single clinical case report focusing on surgical diagnosis and treatment techniques.
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Introduction and importance: Osteochondroma is the most common benign bone tumor; however, involvement of the anterior inferior iliac spine (AIIS) is rare. Such lesions may lead to mechanical symptoms due to impingement on surrounding soft tissues, resulting in unusual presentations such as snapping hip syndrome. Presentation of the case: A 20-year-old male presented with a 3-year history of painful external snapping over the left hip, aggravated by movement. Physical examination revealed a firm, non-tender swelling in the left anterior groin region. Radiographs and CT imaging demonstrated a sessile bony lesion arising from the left AIIS, consistent with osteochondroma. The lesion was excised via an anterior Smith-Petersen approach. Histopathology confirmed osteochondroma. Postoperatively, the patient had complete resolution of symptoms and returned to full activity without recurrence at 1-year follow-up. Clinical discussion: An AIIS osteochondroma is an extremely rare cause of external snapping hip syndrome. The condition results from mechanical irritation of the rectus femoris due to a bony prominence at its origin. CT imaging is essential for diagnosis, while complete surgical excision remains curative with excellent functional outcomes. Conclusion: An AIIS osteochondroma should be considered in the differential diagnosis of snapping hip syndrome. Early recognition and surgical excision result in complete symptom resolution and a low risk of recurrence.
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DOI: 10.1097/rc9.0000000000000877
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