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.

A 45-year-old Chinese man presented with recurrent bilateral knee swelling and pain. He was initially diagnosed with gouty arthritis, but later found to have lipoma arborescens. Magnetic resonance imaging demonstrated frond-like proliferations of fatty synovium. Arthroscopic synovectomy was performed. Histological examination of the specimen revealed villiform fatty tissue covered by slightly t...

PURPOSE To investigate the harmful effects of a single episode of intra-articular bleeding on articular cartilage of rabbit knees using scanning electron microscopy. METHODS Autologous blood was injected into the right knee joints of 18 New Zealand white rabbits. Surface and cellular damages were examined by the scanning electron microscope (n=9) and light microscope (n=34), respectively. The...

Type B hemophilia usually affects patients with a family history of this disease and has a typical clinical picture. However, in the present case it appeared in a patient outside the typical age with no family history of hematologic malignancies and with an unusual clinical picture.

INTRODUCTION Pigmented Villonodular Synovitis (PVNS) of knee joint is a rare disorder of Synovium. Hip and knee joint are commonly affected joints. The knee PVNS presents as a localized or diffuse form. Diagnosis if often delayed and permanent joint damage occurs with advanced disease. Ultrasound examination shows fluid collection and synovial hypertrophy. Magnetic resonance imaging helps in cl...

PURPOSE (1) To safely obtain bone marrow aspirates from the distal femur during arthroscopic knee surgery, (2) to purify and efficiently concentrate connective tissue progenitor cells (CTPs) in the operating room (OR), and (3) to confirm that these are CTPs through their ability to differentiate into bone cells. METHODS Bone marrow aspirates were harvested from the distal femur during arthros...

PURPOSE To perform a feasibility study of dynamic sonography for the diagnosis of medial plica syndrome of the knee. MATERIALS AND METHODS The study design was approved by the university bioethics board, and all the participants gave informed consent. Inclusion criteria were a palpable medial band, history of painful aching, and giving way or locking, which limited the subject's activity for ...

A 50-year-old male presented with recurrent effusion around the left knee joint. There was no history of trauma to the knee or recent episode of fever. On clinical examination, suprapatellar fullness with decreased range of movement was noted. However, there was no tenderness or redness of the overlying skin. There were no complaints in other joints of the body or a similar family history. He w...