A Case Report: Post-traumatic Windswept Deformity of the Elbow - Rare but Possible.

Introduction: Windswept deformity of the elbow, defined as cubitus varus on one side and cubitus valgus on the contralateral side, is exceptionally rare, particularly in post-traumatic settings. The majority of published literature focuses on windswept deformities of the lower limbs, with almost no evidence-based guidelines for upper limb deformities. Case Report: An 8-year-old male sustained bilateral elbow injuries in separate falls, leading to an untreated cubitus varus deformity of the left elbow (carrying angle -15°, Baumann's angle 82°) and a cubitus valgus deformity of the right elbow (carrying angle +20°). The child presented 18 months after the initial trauma due to pandemic-imposed restrictions, with parental concern primarily for cosmesis of the left elbow. Dome osteotomy was performed on the left humerus using a posterior approach with crossed K-wire fixation. The right elbow was managed conservatively due to preserved function and accepted cosmesis. Rehabilitation commenced at 3 weeks, and follow-up over 18 months demonstrated excellent cosmesis and function (Mayo Elbow Performance Score 95, Disabilities of Arm, Shoulder, and Hand score 8). No lateral condylar prominence or recurrent deformity was observed. Conclusion: This is a rare report of a bilateral windswept elbow deformity. Dome osteotomy offers multiplanar correction with superior cosmesis and biomechanical restoration. Population-based carrying angle norms provide valuable guidance in planning correction when contralateral anatomy is unavailable. This case highlights the importance of individualized surgical decision-making, meticulous planning, and patient-centered care. Furthermore, it highlights the acceptance of a valgus deformity at the elbow as opposed to a varus deformity.