1/8. Rapid chondrolysis after an intra-articular leak of bone cement in treatment of a benign acetabular subchondral cyst: an unusual complication of percutaneous injection of acrylic cement.Percutaneous injection of methylmethacrylate is now increasingly employed to treat bone lesions, both malignant and benign. However, the risks of this procedure are still to be fully established. In this report, we describe a case of rapid chondrolysis appearing after the intra-articular leakage of cement during injection of an acetabular subchondral cyst, resulting in hip replacement. Although the mechanism of such chondrolysis is unknown, this event suggests a chondrolytic effect of the acrylic cement. Thus, it is essential to systematically search for the presence of an intra-articular passage before injecting bone cement into a peri-articular cyst. This unusual complication highlights the need for rigorous evaluation of the benefits and risks of percutaneous injection of acrylic cement in the treatment of benign lesions, especially close to an articulation.- - - - - - - - - - ranking = 1keywords = intra-articular (Clic here for more details about this article) |
2/8. An unusual case of meniscal hematoma mimicking a medial meniscal cyst.This is a case report of a so-called meniscal hematoma that mimicked a meniscal cyst. A literature search found no previous report of it before. Treatment with arthroscopic intra-articular decompression alone is enough. We discuss the possibility of its pathogenesis and treatment.- - - - - - - - - - ranking = 0.16666666666667keywords = intra-articular (Clic here for more details about this article) |
3/8. Fractures of the neck of the femur in childhood and adolescence.Twenty cases of fracture of the neck of the femur in children and adolescents below the age of 20 were reviewed. The most important single prognostic factor was the degree of displacement of the fracture at the time of injury. Undisplaced fractures, whether treated conservatively or by internal fixation, did well. Displaced fractures, however, always required internal fixation with thin pins after accurate correction of displacement. The various complications of this fracture in children are discussed. Acute necrosis of articular cartilage following this fracture in children is recorded for the first time in 2 cases.- - - - - - - - - - ranking = 0.0019830635847163keywords = fracture (Clic here for more details about this article) |
4/8. An unusual case of meniscal hematoma mimicking a medial meniscal cyst.This is a case report of a so-called meniscal hematoma that mimicked a meniscal cyst. A literature search found no previous report of it before. Treatment with arthroscopic intra-articular decompression alone is enough. We discuss the possibility of its pathogenesis and treatment.- - - - - - - - - - ranking = 0.16666666666667keywords = intra-articular (Clic here for more details about this article) |
5/8. Type II collagen defect in two sibs with the Goldblatt syndrome, a chondrodysplasia with dentinogenesis imperfecta, and joint laxity.We report on a syndrome of spondylo-epimetaphyseal dysplasia, dentinogenesis imperfecta, and ligamentous hyperextensibility in two sibs born to nonconsanguineous parents. This chondrodysplasia was characterized by severe shortness of stature and an osteoporosis without fractures. Electron microscopic examination of the cartilage documented large vacuoles of dilated rough endoplasmic reticulum within the cytoplasm of chondrocytes. Gel electrophoresis of pepsin-soluble collagen extracted from cartilage demonstrated the presence of type II collagen chains with an abnormal mobility. Prolyl and lysyl hydroxylations were slightly increased. The abnormal molecules melted at a higher temperature than the normal ones. CNBr peptide mapping of type II collagen showed an altered electrophoretic migration of peptides CB 11, CB 8, and CB 10,5 whereas CB 9,7 looked normal. In addition, two small non-collagenous proteins isolated from cartilage were not found in an age-matched control individual but were detected in a normal newborn infant. The quantitation of proline-labelled collagen synthesized by dermal fibroblasts demonstrated a 50% reduction of total collagen. This decrease essentially affected the amount of extracellular type I collagen, which was secreted less efficiently than in control cells. Nevertheless, type I collagen chains behaved normally on 5% polyacrylamide gels. The reduced mRNA levels of alpha 1I and alpha 2I chains might reflect either a transcriptional defect or a decreased stability of mRNA transcripts. We suggest that the association of both pathological chondrocytes producing altered collagen type ii and decreased synthesis of type I could be responsible for this peculiar phenotype. The overmodification of alpha 1II CNBr peptides is consistent with the presence of a single-base substitution in the COL2A1 gene. Whether there is a direct causal relationship between the type II collagen defect and the underexpression of type I collagen will require clarification.- - - - - - - - - - ranking = 0.00033051059745272keywords = fracture (Clic here for more details about this article) |
6/8. Pericruciate intra-articular lateral meniscal cyst without meniscal tear.A case of intra-articular pericruciate type of meniscal cyst from anterior horn of lateral meniscus without associated meniscal tear is reported with review of literature. To our knowledge such association has not been reported earlier.- - - - - - - - - - ranking = 0.83333333333333keywords = intra-articular (Clic here for more details about this article) |
7/8. Development of a new surgical procedure for repairing tracheobronchomalacia.We have developed a new surgical method for repairing tracheobronchomalacia. In experiments on dogs we tried external fixation of Marlex mesh (Bard Cardiosurgery Division, Bellerica, Mass.) on the trachea. We first made models of tracheomalacia by making fractures or resections in intrathoracic tracheal cartilages and then made an external fixation of Marlex mesh on the malacic segments of the trachea. In 11 dogs Marlex mesh was sutured onto the trachea with absorbable thread. The trachea was firmly supported after 2 to 6 months, compared with three controls in which no external fixation was made. However, mucosal defects associated with ischemia caused by the suture developed in four of the 11. In 13 more dogs Marlex mesh was bonded to the trachea with fibrin glue. After 3 to 8 months the supporting strength of the trachea increased up to the level of the normal trachea. There was no evidence of inflammation or of mucosal defects. Therefore Marlex mesh was applied to a 44-year-old-man who had experienced frequent attacks of cough syncope. After the operation the attacks of cough syncope and collapsing of his airway disappeared completely.- - - - - - - - - - ranking = 0.00033051059745272keywords = fracture (Clic here for more details about this article) |
8/8. The epiphyseal spur.A small spur seen at the edge of an open epiphyseal line indicates the presence of an open epiphysis when this is not clear radiographically. In addition, the spur should not be mistaken for an avulsion fracture.- - - - - - - - - - ranking = 0.00033051059745272keywords = fracture (Clic here for more details about this article) |