Background: Simultaneous ipsilateral humeral shaft fracture, distal clavicle fracture, and acromioclavicular (AC) joint injury are extremely uncommon injury patterns. The coexistence of these lesions may indicate high-energy trauma and requires careful evaluation to avoid missed diagnoses and to determine an optimal surgical strategy.
Case Presentation: We presented the case of a 23-year-old right-hand dominant male patient who sustained injuries in a high-energy motor vehicle accident and presented to the emergency department with left shoulder pain and deformity. Radiographic evaluation revealed an ipsilateral humeral shaft fracture associated with a distal clavicle fracture and acromioclavicular (AC) joint disruption. The patient underwent surgical management for all injuries. At 4-month follow-up, clinical examination demonstrated a satisfactory range of motion and acceptable functional recovery.
Conclusion: This rare combination of injuries emphasizes the importance of thorough clinical and radiographic assessment in cases of high-energy shoulder girdle trauma. Early surgical intervention can result in favorable short-term functional outcomes.