Publications by authors named "Mario Massatomo Namba"
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 PDFQuadricipital Tendon: Option in Knee Ligament Reconstruction.
Rev Bras Ortop (Sao Paulo)
February 2022
Although it is a versatile tendon, only 1% of surgeons choose to use the quadricipital tendon as a graft in anterior cruciate ligament (ACL) reconstruction. The present article aims to describe a quadricipital graft removal technique in which its deepest part is maintained. The technique consists of an approach in which the first incision is made in the medial part of the quadricipital tendon to prevent it from getting too short.
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 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.