We present five patients with acute traumatic hemarthrosis of the knee who also had hemorrhage within the bone marrow around the knee detected by magnetic resonance imaging. No additional bony, ligamentous, meniscal or osteochondral injuries were evident from clinical examination, initial and repeated plain radiographs, or magnetic resonance imaging. The main symptoms were sharply localized pai...

At arthroscopy, a 22-year-old woman with repeated spontaneous hemarthrosis of the knee was found to have a synovial hemangioma, which was removed by arthrotomy. In cases of spontaneous hemarthrosis without abnormal bleeding tendency, arthroscopy is recommended to identify and, if possible, treat the cause of bleeding, as repeated bleedings may damage the joint.

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 synovi...

we present a case report of acute spontaneous knee hemarthosis due to erosion of the nail through the knee joint capsule in a boy, seven months following retrograde flexible nailing for fractured femur. careful positioning of the location of the insertion site of flexible nails and proper nail tip management are important to avoid this rare late complication.

We report a thirteen-year-old tennis player with knee hemarthrosis caused by low factor XIII activity. She visited our hospital because of medial peripatellar pain for two years. Although there was no abnormal sign in X-ray or MRI, diagnostic arthroscopy was performed. It revealed some cartilage debris, medial plica and complete septum of suprapatellar plica. Removing the debris by washing out ...

An arterioarticular fistula is an unusual complication of knee arthrocentesis. We describe the sonographic findings immediately following a failed clinical attempt at knee arthrocentesis that resulted in an arterioarticular fistula. Spectral Doppler analysis confirmed the jet of blood into the hemarthrosis. Knowledge of anatomy and application of standard technique is necessary to minimize the ...

Background Despite the widespread use of fibrinolytic therapy and the numerous reports on its bleeding complications, spontaneous hemarthrosis following fibrinolytic therapy is quite rare. Case Report We describe in this report a patient with no previous history of articular disease who developed a spontaneous right knee bloody effusion following fibrinolytic therapy using rt-PA for acute ST-el...