Maegele Marc
Department of Trauma and Orthopedic Surgery, Intensive Care Unit, University of Witten/Herdecke, Cologne-Merheim Medical Center (CMMC), Ostmerheimerstr 200, D-51109 Cologne, Germany.
J Med Case Rep. 2009 Nov 19;3:139. doi: 10.1186/1752-1947-3-139.
Pelvic digit is a rare congenital anomaly where bone develops in the soft tissue adjacent to normal skeletal bone. The condition is benign and is usually discovered accidentally. On a plain radiography, pelvic digit typically appears as a rib- or phalanx-like bone structure with a clear cortex and medulla related to the pelvis, often with a pseudoarticulation at its base.
We present the case of a 40-year-old Caucasian man who presented with chronic pain and tenderness over his right hip together with functional impairment in abduction and external rotation. Radiology identified a bony protuberance at the right anterior inferior iliac spine with fusion of the proximal bony nucleus to the adjacent bone. The pelvic digit was surgically removed and the patient was discharged free of symptoms and with complete range of motion in his right hip joint.
It is important to recognize and distinguish a pelvic digit from post-traumatic ossification and avulsion to avoid unnecessary additional investigations.
盆腔指骨是一种罕见的先天性异常，即在正常骨骼相邻的软组织中形成骨组织。这种情况是良性的，通常是偶然发现的。在X线平片上，盆腔指骨通常表现为类似肋骨或指骨的骨结构，有清晰的皮质和髓质，与骨盆相关，其基部常伴有假关节。
我们报告一例40岁的白种男性，其右髋部出现慢性疼痛和压痛，并伴有外展和外旋功能障碍。影像学检查发现右髂前下棘有一个骨性突起，近端骨核与相邻骨融合。通过手术切除了盆腔指骨，患者出院时症状消失，右髋关节活动范围完全正常。
认识并区分盆腔指骨与创伤后骨化和撕脱很重要，以避免不必要的额外检查。
