Background: Lateral percutaneous pin fixation of Supracondylar humerus fracture (SCHF) is usually performed after accepted closed reduction. The aim of this study was to achieve fracture stability, maintained reduction and satisfactory results while minimizing the risk of iatrogenic ulnar nerve injury. Patients and methods: Twenty patients with extension Gartland kind II and III SCHFs treated by closed reduction and lateral transcutaneous pin fixation from December 2016 to December 2017 were enrolled in single center, prospective, observational, randomized controlled clinical trial. Postoperative immobilization was with an above elbow back splint and an arm sling. On days 1, 7, 14, and 21; obtained radiographs were evaluated. Results: according Flynn's criteria; all cases had satisfactory functional and cosmetic results. Only one case of a local infection was reported and treated with antibiotic therapy. Currently, all patients could perform daily activities. Discussion: lateral pinning technique had achieved fracture stability, maintenance of reduction and alignment, satisfactory functional and anatomical results in the form of a cosmetically accepted upper limb with normal range of movement while minimizing the risk of neurovascular complications as iatrogenic ulnar nerve injury in displaced SCHFs in children. Conclusion: With anatomic reduction and stable fixation, CRPP with lateral-entry K-wires fixation of paediatric SCHFs is comparable to the traditional crosswire fixation in terms of the steadiness, however superior in terms of ulnar nerve safety, thence giving glorious results. Level of evidence: V prospective randomized controlled study.
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