Introduction An apophyseal avulsion injury seen in adolescent athletes Epidemiology demographics most often in adolescents between the ages 14-17 males more often than females occurs most often in sports involving kicking Pathophysiology mechanism typically occurs due to eccentric contraction of the rectus femoris (femoral n.) as hip extends and knee is flexed causes avulsion of its anatomic origin off the pelvis Anatomy Anterior inferior iliac spine a bony prominence just above acetabulum is the origin of the direct head of the rectus femoris (femoral n.) Presentation History sudden "pop" in pelvis Symptoms pain and weakness Physical exam antalgic gait anterior hip pain and hip flexion weakness Imaging Radiographs show avulsion of AIIS Treatment Nonoperative bed-rest, ice, activity modification indications almost all treated nonoperatively technique hip flexed for 2 weeks position lessens stretch of affected muscle and apophysis follow with guarded weight bearing for 4 week Complications Loss of reduction Delayed union
QUESTIONS 1 of 3 1 2 3 Previous Next Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK (OBQ12.30) A 14-year-old hurdler has the immediate onset of right hip pain after his trailing limb struck a hurdle and he falls down. Figure A demonstrates a right hip AP and lateral radiograph. The muscle originating at the injured structure is innervated by which of the following nerves? Review Topic QID: 4390 FIGURES: A 1 Genitofemoral nerve 1% (50/5720) 2 Femoral nerve 87% (4972/5720) 3 Pudendal nerve 1% (40/5720) 4 Obturator nerve 3% (183/5720) 5 Superior gluteal nerve 8% (449/5720) ML 2 Select Answer to see Preferred Response PREFERRED RESPONSE 2
Lesser trochanter avulsion fracture (C2625) Hazem Hassouna Knee & Sports - Anterior Inferior Iliac Spine Avulsion (AIIS) 7/6/2016 573 11 7