9 results about "Medial rotation" patented technology

The invention relates to the technical field of arthroscopic surgery instruments, in particular to a support for a sports medicine arthroscopic surgery, which comprises a support, a lifting platform and a leg fixing mechanism, and the lifting platform locks the height position of the leg fixing mechanism on the support through a limiting bolt; the leg fixing mechanism comprises a fixed frame fixedly connected with the lifting table and a movable frame hinged through a rotating connector. The pull rope is wound around the guide wheel in the sliding rail box to be connected with the shank binding belt, and when the knee joint bends and stretches, the second spring pushes the sliding block to move in a self-adaptive mode; during knee bending, the spring extends to compensate looseness of the pull rope; when the knees stretch, the springs are compressed to absorb redundant tension. The tensile force is always perpendicular to the shank axis through mechanical decomposition, and lateral shearing force is eliminated. A spring dynamic compensation mechanism maintains constant upward effective component force, pulling force direction deviation caused by a traditional fixed fulcrum is avoided, unexpected internal rotation during shank lifting is fundamentally restrained, and knee joint ligaments are protected against abnormal stress damage.

[Problem] During a lowering exercise according to the prior art, changes in upper-limb (forearm, elbow joint, and shoulder joint) movement are such that, since the rotation axis of a grip part is fixed in the vertical direction, the hand rotates around the vertical axis together with the grip part as the lowering exercise is executed, and the shoulder joint continues to internally rotate. As a result, the forearm keeps inclining forward, thereby restricting subsequent extension acceleration slightly rearward of the body. [Solution] Provided is a training machine with which training is performed by moving an arm unit against the weight of a back weight, the arm unit being connected to at least one back weight via a cable and vertically movable along a guide column. A grip part of the arm unit is configured to rotate around an axis substantially orthogonal to the guide column axis. A training machine can thus be provided which can accommodate changes in the inclination angle of the hand and does not restrict extension movement when the upper limb is extended while being lowered.

Systems and methods for analyzing lower body movement in low stress and loaded states and selecting footwear are disclosed herein. A system configured in accordance with embodiments of the present technology can include, for example, a plurality of devices for determining movement and a controller. The devices for determining movement, such as markers, sensors, or image capturing devices, can be used to detect lower body movement of a human subject, including inward and outward knee motion and tibia rotation. The controller can be configured to record lower body movement of the human subject in an unloaded state and a loaded state. The controller can further be configured to determine a trend corresponding to a change in the lower body movement from the unloaded state to the loaded state. Based on this trend, the system can select footwear characteristics that counteract any trend away from the lower body movement in the unloaded state.

Knee joint laxity testing apparatus includes a thigh cradle assembly, a shank cradle assembly, and a heel cradle assembly. The apparatus is configured to measure knee laxity in three planes of motion: anterior-posterior translations; varus-valgus rotations; and internal-external rotations. The thigh cradle assembly, shank cradle assembly, and heel cradle assembly are mounted on a common base. A thigh fixation system is attached to the thigh cradle assembly both at the proximal and distal ends to firmly stabilize the thigh in the thigh cradle. The patella pad and distal thigh fixation system are mounted on a U-bar assembly. The distal thigh fixation system includes two condyle pad adjustment arms upon which a respective condyle pad is mounted, and a patella pad mounted to a linear track on an underside of the U-bar assembly.

The present patent document relates to automatic equipment for performing orthopedic and physiotherapeutic procedures for passive motion of the knee joint (patellofemoral and tibiofemoral), incorporating three motion units: knee flexion and extension motion unit; internal and external rotation motion unit of the knee; and a multidirectional patellar mobilization unit (lower-upper and medial-lateral), an external support for multidirectional patellar mobilizer and a control unit. The flexion and extension motion unit is comprised of a mechanical and electronic structure on which the leg rests during use thereof and has at least two supports for supporting the leg located in the back region of the thigh and in the back region of the leg (calf); the internal and external rotation motion unit of the knee is comprised of a structure with a support for the leg and a support for the foot region (sole region) coupled to a knee flexion and extension motion unit; and the multidirectional patellar mobilization unit is comprised of a receptacle on which a retainer and an actuating element are disposed.

The invention relates to a portable exoskeleton for an upper limb, with n DOF (degrees of freedom), for patients recovering physically from COVID-19, having n DOF, wherein said exoskeleton comprises rigid plates on the outside of the arm which are rigid parts arranged in the upper part; joints (elbow, shoulder, clavicle) which connect the rigid plates and allow their movement in all directions in the form of flexion, extension, abduction, adduction, internal and external rotation; guides arranged on top of each of the rigid plates from the back to the forearm; bus cables for information, which pass through the guides starting from the end of the forearm up to the back; supports (straps) located on rigid plates of the exoskeleton, which secure the structure to the body; sensors connected to the information bus cables which terminate in the embedded system which are arranged in the rigid plates of the linkage points or rigid plates suitably located along the entire arm.

FIELD: traumatology; orthopedics.SUBSTANCE: used for arthroscopy of the hip joint to eliminate Cam or combined types of femoroacetabular impingement. A proximal anterolateral port is created to the peripheral portion of the hip joint, which is used as a viewing port at the beginning of the operation; 4 cm distal and 2 cm lateral to the intersection of the midline of the femur and the perpendicular drawn to it through the apex of the greater trochanter, an anterior port is created, which is used as an instrumental port at the beginning of the operation. The deformation zone is brought to the bone burr, changing the positions of flexion and extension, internal and external rotation of the lower limb, and until the appearance of spring resistance of the fibers of the lateral joint capsule and the ileofemoral ligament, resection of excess bone mass of the anterior surface of the proximal femur within the boundaries of the Cam-deformation is performed. The viewing and instrument ports are changed and the deep fibers of the proximal joint capsule and the ileofemoral ligament are released from the acetabulum. In the presence of Pincer deformity, soft tissues are removed to visualize excess bone mass within the boundaries of the Pincer deformity, and resection of excess bone mass of the anterolateral edge of the acetabulum within the boundaries of the Pincer deformity is performed until radiographic visualization of the absence of intersection of the anterior and posterior edges of the acetabulum. The viewing and instrument ports are replaced. An arthroscope is positioned on the outer edge of the joint capsule fibers, and bone resection of the posterolateral surface of the proximal femur is completed within the boundaries of the Cam deformity by inserting a bone burr from the skin incision of the anterior port into the capsule opening of the proximal anterolateral port, preserving the fibers of the joint capsule and the ileofemoral ligament.EFFECT: method ensures correction of the proximal femur within the boundaries of the Cam-deformation while maintaining the integrity of the structures of the passive capsular-ligamentous stabilizers and eliminates the development of complications in the form of microinstability of the hip joint, anterior dislocation of the femoral head, heterotopic ossification due to maintaining the integrity of the structures of the passive capsular-ligamentous stabilizers and eliminating the development of microinstability of the hip joint, anterior dislocation of the femoral head and heterotopic ossification.1 cl, 1 ex

An insole core material for foot support. On the upper surface of the core material, multiple tarsal support portions are formed by three-dimensional ridges that provide corrective support for the skeletal alignment of the foot, corresponding to the positions and heights of multiple tarsal bones. When the upper, lower, or both surfaces of the core material have following grooves or following ridges that follow the movement between the tarsal support portions, it can flexibly accommodate flexion, internal rotation, and external rotation movements. A protruding structure, functioning as a corrective fulcrum, can be provided at a position corresponding to the lower part of the cuboid bone. On the lower, upper, or both surfaces of the core material, one or more reinforcing grooves can be provided to adjust the balance between the overall rigidity and flexural flexibility of the core material and to distribute pressure on the sole of the foot. Optimal support height is achieved by utilizing a structure extending to the base of the metatarsals and a setting based on a mathematical formula using correction coefficients.

The invention discloses a double-arm symmetrical collaborative lightweight multi-degree-of-freedom upper limb assisting exoskeleton and an intelligent control method thereof. The double-arm symmetrical collaborative lightweight multi-degree-of-freedom upper limb assisting exoskeleton comprises a wearing device, a left side arm and a right side arm, each of the left side arm and the right side arm comprises a shoulder component, a big arm component, an elbow component, a forearm component and a wrist component which are sequentially connected through a connecting rod; the shoulder component has three degrees of freedom of forward flexion / backward extension, adduction / abduction and inward rotation / outward rotation; the elbow component has two degrees of freedom of flexion / extension and inward rotation / outward rotation; the wrist component has two degrees of freedom of wrist joint metacarpal flexion / dorsal flexion and wrist joint ulnar deflection / radial deflection; the single arm has seven degrees of freedom, and the double arms are overlapped to form fourteen degrees of freedom. According to the exoskeleton control system, an intelligent PD control method based on an RBF neural network and quasi-time delay estimation is adopted, the movement of each joint is more accurately and automatically adjusted according to the movement intention of a user and an external load, and the intelligence and humanization level of the exoskeleton is improved.