Project description:Medial meniscus posterior root tears are common injuries, especially in the Asian world. This injury must be repaired where indicated to restore knee biomechanics and prevent arthritis. Suturing the meniscus using suture tapes provides good hold of the tissue. The use of a 70° arthroscope and creation of a transseptal portal improve visualization of the posterior compartment. Creation of a high posteromedial portal achieves the correct trajectory for the suture anchor insertion. A knotless suture anchor can be used to fix the posterior root at its anatomic attachment site. This obliterates the need for transtibial drilling for a suture pull-out repair or for knot tying and suture shuttling as for a conventional suture anchor.
Project description:A complete radial tear of the meniscus posterior root, which can effectively cause a state of total meniscectomy via loss of hoop tension, requires that the torn root be repaired. Several methods have been used to repair medial meniscus posterior root tears, most of which are based on a simple stitch technique that is known to have stitch-holding strength. We applied a modified version of the Mason-Allen stitch technique, which is recognized as a method for rotator cuff repair surgery because its locking effect overcomes the potential weakness of simple stitches. This article introduces the medial meniscus posterior root tears repair procedure based on a modified Mason-Allen stitch technique in which 2 strands (i.e., 1 simple horizontal and 1 simple vertical stitch) are used.
Project description:The meniscal roots are critical in maintaining the normal shock absorbing function of the meniscus. If a meniscal root tear is left untreated, meniscal extrusion can occur rendering the meniscus nonfunctional resulting in degenerative arthritis. Two main repair techniques are described: (1) suture anchors (direct fixation) and (2) sutures pulled through a tibial tunnel (indirect fixation). Meniscal root repair using a suture anchor technique is technically challenging requiring a posterior portal and a curved suture passing device that can be difficult to manipulate within the knee. We present a technique for posterior medial meniscus root repair using 3 sutures (1 leader, 2 cinch), standard arthroscopy portals, and transtibial fixation. Overall, this technique simplifies a challenging procedure and allows for familiarity and efficiency.
Project description:Repair of medial meniscus posterior root tear is important in preventing rapid progression of knee osteoarthritis. There are many repair techniques for medial meniscus posterior root tears, and good clinical results have been reported. Conversely, in terms of improving extrusion and healing meniscal injuries, sufficient results have not been obtained. Reconstruction of the medial meniscus posterior root can restore meniscal hoop action and normal knee biomechanics. Moreover, pull-out repair technique provides strong traction. We describe arthroscopic medial meniscus posterior root reconstruction and pull-out repair technique combined technique for medial meniscus root tear.
Project description:There are various treatment options for medial meniscus posterior root tears, such as conservative management, meniscectomy, pull-out repair, and suture anchor repair. However, the ultimate repair technique for optimal meniscal healing remains a topic of discussion, as each technique has its own set of risks and pitfalls. This technique provides a stable and straightforward approach that minimizes fixation-related concerns. However, to determine the optimal applicability of this medial meniscus posterior root tear repair method, further research is needed to compare the biomechanical properties of this repair method with established techniques.
Project description:Medial meniscus posterior root tears (MMPRT) are a risk factor for knee osteoarthritis (KOA) because it involves disruption of the hoop structure of the meniscus. In recent years, MMPRT pullout repair has been performed to restore the native anatomy of the meniscus attachment. In addition, medial open-wedge high tibial osteotomy (MOWHTO) has been performed with MMPRT pullout repair to reduce the pressure on the medial compartment. However, it has been noted that when MMPRT pullout repair and HTO are performed simultaneously in a patient, the locking screws of the plate interfere with the tibial bone tunnel, which damages the suture. In this technical note, we developed a method to reduce the probability of interference by placing the plate further anteroinferior when digging the bone tunnel from the PM position. This technical note aimed to provide a comprehensive description of the safety of transtibial MMPRT repair with MOWHTO for medial KOA with MMPRT.
Project description:Medial meniscus posterior root tears can lead to rapid progression of knee arthritis because of loss of the stress distribution function of the meniscus. Medial meniscus root repair can restore stress distribution and improve clinical outcome. In cases of medial meniscus root tears with meniscal extrusion, centralization may help reduce extrusion and protect the root repair. Presented here is a technique for transtibial medial meniscus root repair with centralization using knotless suture anchors, building on previously developed techniques.
Project description:We describe a surgical technique to repair medial meniscus posterior root tears through a transtibial pullout repair with a subcortical button for tibial fixation. This technique allows progressive tensioning of the repaired root without losing tension both during suturing of the knots above the button and after the procedure, owing to the specific button configuration.
Project description:The medial meniscal root tear, a particular meniscal injury at the level of its posterior bone insertion, leads to a loss of impact absorption and load distribution capacity, similar to total meniscectomy. Therefore, its repair is fundamental for knee joint longevity. This type of injury often occurs in middle-aged patients with lower limbs varus malalignment, which results in mechanical overloading of the medial compartment and induces premature cartilage wear out. The success of meniscal root repair, with meniscal bone reinsertion, depends on the correction and realignment of varus deformities greater than 5° for physiological levels. In this situation, corrective tibial osteotomy combined with meniscal repair is indicated. Our goal is to describe the step-by-step technique of the valgus opening wedge tibial osteotomy combined with the arthroscopic reinsertion of the posterior meniscal root in tibia during the treatment of a patient with varus deformity and medial meniscus root tear.
Project description:Medial meniscal root injury is known to cause an increase in tibiofemoral contact pressure and results in early osteoarthritis. There have been many reports on meniscal root repairing techniques, which can be categorized into 2 groups. One is transosseous suture, and the other is anchor suture repair. Both techniques show improvement in not only clinical performance, but also radiographic finding. However, the meniscal root repair procedure must be performed by experienced physicians. Most techniques require a posteromedial portal, which takes time and may even complicate the procedure. The technique proposed in this study provides a simple procedure in which no posteromedial portal is required and a soft anchor suture, a commonly used suture in glenolabral repair, is used. The use of this suture, instead of the conventional anchor suture, is believed to lessen possible injury to the cartilage and results in easier revision surgery.