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[Legg-Calve-Perthes disease--a mysterious hip joint disease in children. Diagnosis, investigation and treatment].

The major challenge to the attending physician in cases of children with Legg-Calvé-Perthes disease (LCPD) is to prevent the development of degenerative arthritis of the hip joint. In the presence of unfavourable prognostic factors such as lateral subluxation or more than 50 per cent necrosis of the femoral head, the examination should be complemented by MRI (magnetic resonance imaging), and operative treatment be considered. Treatment is commonly based on the principle of containment of the femoral head to prevent its deformity. However, there is no consensus as to the treatment of LCPS, and as the aetiology remains unknown the optimal treatment is similarly unclear.

Age Factors↗

Synovial fluid gelatinase concentrations and matrix metalloproteinase and cytokine expression in naturally occurring joint disease in horses.

OBJECTIVES: To determine concentrations of matrix metalloproteinase (MMP)-2 and -9 in synovial fluid; and mRNA expression of MMP-1, -13, and -3; interleukin[IL]-1alpha and beta; and tumor necrosis factor (TNF)-alpha in synovial membrane and articular cartilage from horses with naturally occurring joint disease. SAMPLE POPULATION: Synovial fluid (n = 76), synovial membrane (59), and articular cartilage (45) from 5 clinically normal horses and 55 horses with joint disease categorized as traumatic (acute [AT] or chronic [CT]), osteochondritis dissecans (OCD), or septic (S). PROCEDURE: Synovial fluid gelatinase concentrations were analyzed, using zymography. Synovial membrane and articular cartilage mRNA expression for MMP-1, -3, and -13, IL-1alpha and beta, TNF-alpha, type-II collagen, and aggrecan were analyzed, using quantitative reverse transcriptase-polymerase chain reaction. RESULTS: Synovial fluid pro-MMP-2 concentration was significantly higher in diseased joints than normal joints. Septic joints had significantly higher concentrations of pro and active MMP-9. Stromelysin-1 was expressed in > or = 80% of synovial membrane and articular cartilage samples and was strongly influenced by age. Collagenases were rarely expressed, with MMP-13 expressed only in diseased joints. Interleukin-1beta expression was significantly higher in all OCD samples and was influenced by age. Tumor necrosis factor-alpha expression was significantly higher in cartilage from joints with AT and OCD. There was no correlation between MMP or cytokines and type-II collagen or aggrecan expression. CONCLUSIONS AND CLINICAL RELEVANCE: Matrix metalloproteinase-2 and -3 are abundant in naturally occurring joint disease and normal joints. Interleukin-1beta and TNF-alpha may be important in the pathogenesis of OCD. Age affects MMP and IL-1beta concentrations.

Animals↗

Concentrations of keratan sulfate in plasma and synovial fluid from clinically normal horses and horses with joint disease.

OBJECTIVE: To determine whether keratan sulfate concentrations in plasma or synovial fluid from clinically normal horses were different from concentrations in horses with joint disease and whether concentrations varied with type of joint disease. DESIGN: Case-control study. ANIMALS: 67 clinically normal horses, 10 clinically normal foals, and 160 horses with joint disease. PROCEDURE: ELISA was used to measure keratan sulfate concentrations. RESULTS: Mean plasma keratan sulfate concentration (mean +/- SEM, 580 +/- 124 ng/ml) in foals peaked at 10 weeks of age. Mean plasma keratan sulfate concentration in clinically normal horses was 200 ng/ml (95% confidence interval, 157 to 251 ng/ml). Horses with osteochondral (chip) fractures, other closed intraarticular fractures, inflammatory arthritis (synovitis), infectious arthritis, or osteochondrosis had significantly higher plasma keratan sulfate concentrations than did clinically normal horses, but horses with osteoarthritis did not. Breed, gender, and type of joint disease affected keratan sulfate concentration in synovial fluid. Standard-breds with chip fractures of the metacarpophalangeal/ metatarsophalangeal joints had significantly higher keratan sulfate concentrations in synovial fluid than did Thoroughbreds. Keratan sulfate concentrations in synovial fluid from osteoarthritic carpal joints were lower than concentrations in normal carpal joints and tarsocrural joints with inflammatory joint disease. CLINICAL IMPLICATIONS: Keratan sulfate concentration alone was not a specific marker of joint disease but was affected by various joint diseases.

Aging↗

Review article: bone and joint diseases in inflammatory bowel disease.

The intestinal and articular systems are closely linked in inflammatory bowel disease. Clinical and immunological studies support an important aetio-pathogenetic link between intestinal and articular inflammation. There is increasing evidence for a negative link between bone mass density and intestinal inflammation. This paper will focus on the prevalence, aetio-pathogenesis and treatment of arthritis (peripheral, sacroiliitis and spondylitis) and osteoporosis in inflammatory bowel disease.

Animals↗

Clinical comparative study of microcurrent electrical stimulation to mid-laser and placebo treatment in degenerative joint disease of the temporomandibular joint.

Mid-laser and microcurrent stimulation (MENS) have been found to be effective in the reduction of painful temporomandibular joints (TMJ) with internal derangement. There was significant improvement in mobility with the reduction of pain. Mid-laser was superior to MENS in its application and effect, and both were significantly better than the placebo treatment.

Electric Stimulation Therapy↗

Review of pathogenesis and treatment of degenerative joint disease.

Treatment of degenerative joint disease (osteoarthritis) is discussed in relationship to pathogenesis of five clinical entities, defined to facilitate discussion:-1) occurring in high motion joints and associated with synovitis; 2) associated with low motion joints; 3) "non-progressive" articular cartilage erosion; 4) secondary to other identified problems (intra-articular fractures, ligamentous damage, wounds, septic arthritis, osteochondrosis); and 5) chondromalacia of the patella. In addition to direct damage to articular cartilage, synovitis and capsulitis and depletion of matrical glycosaminoglycans and proteoglycans play important roles. The natural healing response in damaged articular cartilage is inadequate. The principles of treatment are divided into: 1) prevention or treatment of primary causes. These include the effects of track surface, shoeing, and the appropriate resolution of intra-articular fractures, septic arthritis and osteochondritis dissecans. 2) treatment of active soft tissue disease contributing to articular cartilage degeneration, including rest, physical therapy, synovectomy and administration of anti-inflammatory drugs, sodium hyaluronate and polysulfated glycosaminoglycans. 3) attempts at treatment of articular cartilage loss or degeneration, including articular cartilage curettage, subchondral bone drilling, osteophyte removal, articular cartilage grafting and arthrodesis.

Animals↗

Rubella virus and chronic joint disease: is there an association?

Synovial fluid samples and/or biopsies from 79 patients with various chronic inflammatory joint diseases or traumatic joint injury were tested for rubella virus (RV) in order to confirm or refute results from other studies that suggested RV as a cause of chronic inflammatory joint disease. Sixty-eight of the 72 patients tested had RV antibodies. RV RNA was detected by reverse transcription-PCR in the synovial fluid cells from two patients. RV was also isolated by cell culture from the synovial fluid of one of these two patients. This patient was a 42-year-old female with common variable immune deficiency and Mycoplasma hominis arthritis, while the other was a 68-year-old female with rheumatoid arthritis. While these results fail to confirm that RV is associated with chronic inflammatory joint disease, they suggest that RV may persist within a joint and be reactivated when cell-mediated immunity is suppressed.

Adolescent↗