Abstract：
UNASSIGNED: A 72-year-old male presented for evaluation of a 2-wk history left buttock pain that began while playing pickleball. He sustained a left inversion ankle sprain while in a squatted position and landed on his left buttock. Four days after his injury, he developed extensive bruising involving his lower back, buttock, and left thigh. On examination, he had tenderness to palpation at the left side of the sacrum and in the region of the deep external rotators. Left hip range of motion was full in extension but limited to 90° of flexion, which reproduced left-sided buttock pain. External rotation provoked pain, but internal rotation was full and pain free. MRI of the pelvis demonstrated a grade 2 partial thickness tear of the left gluteus maximus muscle at its distal myotendinous junction with associated retraction and intramuscular hematoma. He was managed with compression with biking shorts, icing, acetaminophen, and physical therapy. He returned to pickleball approximately 4 wk after his injury, and at his 4-wk follow-up, he reported 99% improvement in his symptoms with the only remaining complaint being minimal discomfort with gluteal stretching.
摘要：
■一名72岁的男性参加评估2周的病史，在玩泡菜球时开始的臀部疼痛。他蹲着时左脚踝扭伤，落在左臀部。他受伤四天后,他的下背部出现了广泛的瘀伤，臀部,左大腿。在检查中，他在骶骨左侧和深的外部旋转区域触诊有压痛。左髋部活动范围在伸展时完全，但仅限于90°屈曲，再现左侧臀部疼痛。外旋转引起疼痛，但内部旋转是充分和无痛。骨盆的MRI显示左臀大肌在其远端肌腱交界处的2级部分厚度撕裂，伴有相关的回缩和肌内血肿。他被骑自行车短裤压缩，结冰,对乙酰氨基酚,和物理治疗。他受伤后大约4周回到pickleball，在他4周的随访中,他报告说，他的症状改善了99%，唯一剩下的主诉是臀肌伸展带来的轻微不适。
