Posterior meniscal root repair is an expensive procedure because its performance often requires the use of specific devices. This issue is a limiting factor, especially in the public health system. Given this context, the development of alternative methods to treat these injuries became necessary.
View Article and Find Full Text PDFThe first meniscal suture was performed in 1885 and took about a century to become popular. Currently, all-inside meniscal repair devices are widely used. However, this technique presents the disadvantage of being a method dependent on specific devices, presenting a higher cost than other techniques.
View Article and Find Full Text PDFBackground: Injuries to the articular cartilage of the knee often fail to heal properly due to the hypocellular and avascular nature of this tissue. Subsequent disability can limit participation in sports and decrease quality of life. Subchondral bone perforations are used for the treatment of small defects.
View Article and Find Full Text PDFObjective: To analyze, from the immunohistochemical perspective, the effects of hyaluronic acid of different molecular weights in an experimental model of osteoarthritis in rabbits.
Methods: Forty-four male California rabbits were randomly assigned to three different groups (PR, S, and P) and submitted to the resection of the anterior cruciate ligament of the right knee. Three weeks after the surgical procedure, three intra-articular weekly injections were carried out with low-molecular-weight native hyaluronic acid (Hyalgan) to PR group, high molecular weight branched chain hyaluronic acid (Synvisc) to group S, and saline solution 0.
Objective: to analyze the effects of hyaluronic acid of different molecular weights in an experimental model of osteoarthritis in rabbits.
Methods: forty-four male California rabbits were divided randomly into three groups and underwent resection of the anterior cruciate ligament in his right knee. After three weeks of the surgical procedure began three weekly intra-articular injections of hyaluronic acid native (Polireumin(®))-PR, hyaluronic acid branched chain (Synvisc(®))-S and 0.
Objective: To evaluate and compare the biomechanical behavior of two different suture configurations:"X"and"Loop"in the preparation of tendons for knee ligament reconstruction.
Methods: We used common digital extensor tendons of bovine that can replace the human flexor tendons in experimental studies of traction. In the first group, point "X" suture with ® No.
Objective: To determine the initial resistance of fixation using the Rigid Fix(®) system, and compare it with traditional fixation methods using metal interference screws; and to evaluate the resistance of the fixation with the rigid fix system when the rotational position of the bone block is altered in the interior of the femoral tunnel.
Methods: forty ovine knee specimens (stifle joints) were submitted to anterior cruciate ligament reconstruction (ACL) using a bone-tendon-bone graft. In twenty specimens, the Rigid Fix method was used; this group was subdivided into two groups: ten knees the pins transfixed only the spongious area of the bone block, and ten for fixation passing through the layer of cortical bone.
Objective: To compare the anthropometric data and the sportive way of life with the hamstring tendons dimensions, prospectively, in order to create a rule to predetermine its dimensions.
Methods: General and anthropometric data were collected from 30 patients that were submitted to anterior cruciate ligament reconstruction. These data were correlated to the diameter and length of the hamstring tendons.
Objective: To evaluate the effects of intra-articular injections of corticosteroids, native hyaluronic acid and branched-chain hyaluronic acid in experimentally-induced osteoarthrosis.
Methods: 44 rabbits underwent anterior cruciate ligament resection and were then divided into four groups of eleven. Group 1: one intra-articular injection of saline solution per week, for three weeks; Group 2: three injections (one per week) of native hyaluronic acid; Group 3: three injections (one per week) of branched-chain hyaluronic acid; Group 4: two injections of betamethasone with an interval of three weeks.
Objective: To evaluate the difference of the mechanical behavior of bended tied (sewed) and not tied hamstring tendons in order to evaluate if it has any effective function.
Methods: Twenty-four fresh bovine digital tendons had been used. Alginate to determine the area of the tendon transversal section was used.
Rev Col Bras Cir
July 2009
Objective: To study the effects of repeated injections of betamethasone on proteoglycan concentration in the articular cartilage of normal knees of Californian rabbits of both sexes.
Methods: Eighty animals were randomly divided into eight groups of ten animals each. Three control groups (saline solution injected or not) and five study groups - therapeutical doses, repeated or not, of betamethasone injected into the right knee of each animal at weekly intervals.