Knee hemarthros secondary to osteochondritis dissecans (König disease).

A case is presented of a hemarthrosis associated with osteochondritis dissecans in a young man who arrived in the Emergency unit due to tender and swelling of his right knee one hour after a slightly rotational gesture of the lower limb. Many years before the patient suffered a sports injury in the same knee, but it was never assessed. Radiography studies showed bone fragments inside the synovial capsule, and the joint aspiration was compatible with hemarthrosis.

Sternoclavicular septic arthritis: a series of 5 cases and review of the literature.

Infectious arthritis is a medical emergency whose prognosis, in terms of general morbidity and the final functionality of the joint, depends on rapid diagnosis and treatment. The sternoclavicular joint is an area of low prevalence of this type of arthritis, although its frequency is often concentrated in immunosuppressed patients, users of parenteral drugs or after traumatic events. We present a series of 5 microbiologically documented cases of sternoclavicular septic arthritis, 3 of which occurred in immunocompetent patients, and a short review of this pathology.