Primary synovial chondromatosis is an uncommon and benign metaplastic condition that usually affects large joints. Though shoulder involvement is scarce, and there are only a few cases in the pediatric population.

Osteopoikilosis(OPK) is one of the rare genetic musculoskeletal, non inflammatory disorders that we should increase awareness towards. We report a case of a patient diagnosed with psoriatic arthritis with incidental imaging findings of lesions suggestive of osteopoikilosis.

Pneumorrachis, defined as the presence of intraspinal air, is a rare radiographic finding. It is mostly caused by traumatic and iatrogenic etiologies such as pneumothoraces or pneumomediastinum. Spontaneous pneumorrachis attributable to degenerative disc disease is an exceptional condition. We report two cases of radiculopathy caused by spontaneous pneumorrachis.