Contrarily, lateral HLO fracture could easily be fixed by lateral-only pinning, but the correct lateral pinning is necessary because medial pinning is difficult. In medial HLO fractures, medial pinning is important for stability, and sometimes lateral pinning was impossible. The mechanism of injury of HLO fractures may be direct contact injury. Flynn's cosmetic grade showed satisfactory results in all patients.Ĭonclusion: The prevalence of HLO fractures was 2% in the displaced supracondylar humeral fracture. The final Baumann angle and lateral humero-capitellar angle were 20.5 (5–67.6) degrees and 49.3 (23.3–71.9) degrees, respectively, without statistical significance compared to the normal side. ![]() In addition, the lateral pin was not a bicortical fixation through capitellum entry in 2 patients who had it fixed by cross pinning. In medial HLO type, medial pinning only was done in 3 patients due to the difficulty in lateral pin insertion. There were 6 patients with lateral HLO fracture, and 8 patients had medial HLO type. The common mode of injury was direct contact injury to the elbow. The median age was 5 years 1 month (range, 2–11 years). Results: There were 14 patients diagnosed with the HLO fracture (14/690) and all the patients were treated by pin fixation. Clinical and radiographic parameter outcomes were assessed. HLO fracture was defined as having a fracture line starting from either cortex above the metaphyseal-diaphyseal junction and finishing at the opposite cortex around or below the olecranon fossa. Methods: We reviewed 690 children who had undergone an operation for the displaced supracondylar humeral fracture. The purpose of this study is to assess the prevalence of high-long oblique supracondylar humeral (HLO) fracture and evaluate the surgical outcome of percutaneous pin fixation. However, a long oblique fracture line is difficult to fix by the traditional cross pinning. ![]() 2Department of Orthopedics, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South KoreaĪim: The treatment protocol for supracondylar humeral fracture has mainly been based only on the severity of displacement and percutaneous pinning has been recommend as a first treatment.1Division of Pediatric Orthopedic Surgery, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, South Korea.Mudit Shah 1 Joo Hyung Han 1 Hoon Park 2 Hyun Woo Kim 1 Kun-Bo Park 1 *
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