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Supracondylar Humerus Fracture resulting in Malunion

Supracondylar Humerus Fracture resulting in Malunion

Case Summary

The patient was a 7 year old male who fell from a high bar at gymnastics sustaining a type 3 supracondylar humerus fracture on. He was treated with closed reduction and percutaneous pinning surgery by the pediatric orthopedic surgeon. He was seen in clinic for follow-up by the surgeon and had pins removed on approximately 30 days post-operatively. He developed cubitus varus hyperextension malunion of his elbow fracture.

Questions

Was there a breach in the standard of care that resulted in the cubitus varus hyperextension malunion? What errors occurred during and after the surgery that resulted in the malunion? Should the doctor have been able to diagnose the issue from the follow up visit?

Expert Findings

An AMFS Pediatric Orthopedic Surgery expert reviewed this matter and opined that, to a reasonable degree of medical certainty, the surgeon violated the medical standard of care in the performance of the closed reduction and percutaneous pinning surgery. While the reduction was adequate, the pinning did not cross the fracture site and therefore could not stabilize the fracture. The fluoroscopy images taken on the date of surgery and the radiographs from one and two weeks subsequent to surgery demonstrate that the pins were placed above the fracture site. Thus, the pins did not engage the distal fragment, did not cross the fracture site, and did not stabilize the fracture. The inadequate pinning of the fracture allowed the fracture to displace to a varus and hyperextension position. The patient has a complication of cubitus varus and extension malunion. There is substantial deformity noted on both radiographs and on the clinical photos. On physical examination by another surgeon, he was noted to have obvious deformity, hyperextension, and lack of flexion. This deformity is unlikely to remodel. He will have cosmetic deformity. He will have functional limitations with hyperextension and lack of flexion. He will have difficulty with weight bearing sports such as gymnastics. He is at increased risk for lateral condyle fracture. He will likely require corrective surgery which would involve distal humerus osteotomy. This is a complex upper extremity deformity corrective surgery that has risks of neurovascular injury, non-union, malunion, and stiffness.

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