When You Are Locked against the Wall: A Rare Case of Locked Posterior Dislocation of the Shoulder with Proximal Humerus Fracture

Posterior shoulder dislocations accompanied by fractures are uncommon, and they are often overlooked during the initial evaluation. Similarly, metastatic malignant melanoma with brain metastasis is a rare condition. Here, we present the case of a 60-year-old woman diagnosed with metastatic malignant melanoma who sustained a posterior fracture dislocation of the right humerus. A computed tomography scan revealed a humeral head defect of 20%–40%, which was treated with fixation using a bone graft. Unfortunately, she experienced a stroke affecting her right side 1 month later. During a routine follow-up at 3 months, the fracture was found to have united. However, the patient was subsequently lost to follow-up.