Doctors took a look at man's painful shoulder—they found the joint was missing

A 45-year-old construction worker sought care in the emergency department due to excruciating shoulder pain and severe swelling. Medical professionals ordered an X-ray to determine the root cause of his discomfort. Upon examination of the images, an alarming discovery emerged: the man's entire shoulder joint had vanished, as if it had been violently shattered into minuscule fragments.

The shoulder joint, characterized by its ball-and-socket structure, relies on the upper arm bone (humerus) fitting snugly into the socket of the shoulder blade. However, the X-ray report indicated that the patient's humeral head, the rounded top of the humerus, was entirely absent, along with the intact socket itself. Furthermore, the humerus was found to be detached from the joint, drifting freely within the man's arm.

Compounding the situation, a subsequent MRI scan revealed that the man's rotator cuff—comprising the supraspinatus, infraspinatus, and subscapularis tendons—had also suffered catastrophic damage, with complete tears in three of the four main tendons. The combination of these findings paints a grim picture of the man's shoulder, which is swollen and visibly compromised, as well as the X-ray evidence demonstrating the destruction of the humeral head and a free-floating upper arm bone.

The case report, published in the New England Journal of Medicine, serves as a stark reminder of the devastating consequences that can arise from a severe shoulder injury.