Osteoarthritis is a degenerative joint disease,with the characters of degradation of articular cartilage, the formation of the joint marginal osteophyte and synovium lesions. Previous studies have focused on the treatment of articular cartilage lesions. In recent years, new research in shows synovial inflammation plays an important role in OA. Synovium lesions and synovial inflammation-related factors induced the degradation and destruction of articular cartilage, and promoted the development of osteoarthritis. The role of synovial lesions in osteoarthritis is increasingly prominent, and the treatment for synovial lesions will become a new target. So this paper reviews the various manifestations of synovial in osteoarthritis.
Humans ; Osteoarthritis ; pathology ; Synovial Membrane ; pathology

Hemangioma ; pathology ; Humans ; Joint Diseases ; pathology ; Male ; Middle Aged ; Synovial Membrane ; pathology

Adult ; Femur ; pathology ; Humans ; Magnetic Resonance Imaging ; Male ; Synovial Membrane ; pathology ; Tuberculosis, Osteoarticular ; pathology ; surgery

Aged, 80 and over ; Chondroma ; pathology ; surgery ; Female ; Humans ; Knee Joint ; pathology ; Synovial Membrane ; pathology

Adult ; Female ; Femoracetabular Impingement ; pathology ; Hip Joint ; pathology ; Humans ; Male ; Synovial Membrane ; pathology

Humans ; Osteoarthritis, Knee ; pathology ; surgery ; Risk Factors ; Synovectomy ; Synovial Membrane ; pathology

In the human and equine species, different kinds of free floating intra-articular particles are related to certain disorders. Osteochondral fragments formed during osteochondrosis dissecans are the most common finding in the equine species, whereas in humans rice bodies due to rheumatoid arthritis are more frequent. Herein we report a third type of floating body inside the stifle of an adult draught horse stallion, in macroscopic appearance similar to articular rice bodies known in humans. As revealed by histologic examination, the two particles consist of polypoid degenerated structures derived from synovial villi. Their formation was probably induced by ischemia.
Animals ; Histocytochemistry/veterinary ; Horse Diseases/*pathology ; Horses ; Joint Loose Bodies/pathology/*veterinary ; Male ; Stifle/*pathology ; Synovial Membrane/*pathology

It is well known that double contrast knee arthrography is useful in diagnosis of meniscal lesions and other knee pathology, But intra-articular structures become less well delineated shortly after injection into the kneejoint with water soluble contrast media because of rapid absorption and dilution of the injected media. This limits the time when sharply detailed arthrograms are obtainable and precludes repeat delayed arthrogram withougreinjection of contrast media. In order to overcome this major disadvantage, the authors used epinephrine which has vasoconstrictive effect and is expected to reduce fluid movement across the synovial membrane temporarily. The authors attempted to compare epinephrine inhanced double contrast arthrographic group, einephrine(+) group, to thedouble contrast arthrographic group withoug epinephrine, epinephrine(-) group, by statistical evaluation. Eachgroup consisted of 35 cases and 7 lateral films of knee joint were taken sequentially 2,6,10,15,10,20,30, and 60 minutes after injection of contrast media, and were assessed by 5 certified radiologists. The resuls were as follows; 1. The difference of mean score of quality between epinephrine(+) group and epinephrine(-) group was statistically significant at every time interval (p value<0.01 at 2 minutes, p<0.01 at all other time intervals).Epinephrine(+) group was superior to the epinephrine(-) group in quality of film. 2. Numbers of cases above scoreof 2 which was considered to be of diagnostic quality in evaluating meniscal lesions were larger in epinephrine(+)group than epinephrine(-) group in quality of film. 3. Only 43% of cases was above score of 2 at 10 minutes inepinephrine (-) group, but 97% at 10 minutes and 80% at 20 minutes respectively in epinephrine(+) group. Therefore duration for adequate study of arthrogram is prolonged more than two times in epinephrine(+) group. 4. At 30 minuts, 57% of cases was above score of 2 in epinephrine(+) group while at 15 minuts, 80% of cases was below scoreof 2 in epinephrine(-) group. This makes it possible to repeat study without additional injection of contrast media or postponing of the examination in half of cases, if necessary. 5. The use of epinephrine in kneearthrography results in significant enhancement of radiographic quality initially (p<0.01). Therefore we can fluoroscope in good condition and obtain films of fine quality.
Absorption ; Arthrography ; Contrast Media ; Diagnosis ; Epinephrine ; Knee Joint ; Knee ; Pathology ; Synovial Membrane ; Water

Animals ; Arthritis, Experimental ; metabolism ; pathology ; Breast Neoplasms ; pathology ; Cadherins ; metabolism ; physiology ; Cell Movement ; Female ; Fibroblasts ; cytology ; pathology ; Humans ; Macrophages ; cytology ; pathology ; Neoplasm Invasiveness ; Synovial Membrane ; cytology ; metabolism ; pathology

Localized forms of giant cell tumor are known to arise commonly in the synovial membrane of the finger joints. Multinucleated giant cells are its characteristic pathology finding, giant cell tumor shows a low rate of recurrence after complete excision. When occurring at the knee joints, giant cell tumor manifests a wide form of symptoms, from no symptom at all, to intermittent locking. Complete excision is possible by arthroscopy, but if done incompletely, it is reported to recur in 45% of cases. We present here a case of giant cell tumor that has arisen from the anterior portion of the posterior cruciate ligament, excised by arthroscopy and followed by pathologic confirmation.
Arthroscopy ; Finger Joint ; Giant Cell Tumors* ; Giant Cells ; Knee Joint* ; Pathology ; Posterior Cruciate Ligament* ; Recurrence ; Synovial Membrane