INTRODUCTION • The elbow complex includes the elbow joint ( Humeroulnar & Humeroradial joints) and the Proximal & Distal radioulnar joint. • The elbow joint is considered to be a complexed joint that functions as a modified or loose hinge joint. Arthrokinematics. Osteokinematics (osteo = bone; kinematics = motion) is the gross motion which occurs when bony segments move around a joint axis. BIOMECHANICS OF ELBOW JOINT PRESENTED BY:PRATIBHA MOHANTY MPO 1ST YEAR NIOH,KOLKATA 2. Talocrural Joint – The talus rolls within the mortise during dorsiflexion and plantarflexion. Arthrokinematics refers to the movement of joint surfaces.. Arthrokinematics is the small movements happening at the joint surface.Arthrokinematic movements typically consist of rolls, glides/slides, and spins. The idea that the morphology of articular surfaces is strongly related to kinematics can be traced back to the works of MacConaill, 7, 8 Maitland, 10 MacConaill and Basmajian, 9 and Steindler. Although the elbow joint traditionally has been classified as a hinge joint, the hinge component occurs at the humeroulnar articulation, and the humeroradial joint is classified as a plane joint. OSTEOKINEMATICS. Method: Helical CT-data in elbow positions of full active supination, mid position and full pronation with the elbow in extension were acquired from three female subjects and processed in 3D skeletal reconstructions. Elbow flexion is an example of osteokinematics. Arthrokinematics refers to the movement of joint surfaces. Osteokinematics 9 Variability: Age Gender 10. 14 These early works, as well as those of others, 15 … 1. FIGURE 3-32 A, Pressure distribution on elbow joint surface as external load P is applied at the distal end of the ulna. The angular movement of bones in the human body occurs as a result of a combination of rolls, spins, and slides. Range of motion (ROM) is determined by osteokinematics and arthrokinematics. The convex-concave rules of arthrokinematics have been taught in physical therapy schools in the United States for about 30 years. A roll is a rotary movement, one bone rolling on another. The OA joint is responsible for 10 degrees of flexion, 25 degrees of extension, 5 degrees of sidebend, and 4 degrees of conjugate rotation. Arthrokinematics: Knee Joint Norkin and Levengie 11. Osteokinematics typically consist of flexion/extension, abduction/adduction, and internal rotation/external rotation.Arthrokinematics is the small movements happening at the joint surface.Arthrokinematic movements typically consist of rolls, glides/slides, and spins. The SC joint is made up of the medial end of the clavicle, the manubrium and an articular disc in-between. It is important to understand that the sternoclavicular joint is a saddle joint. ; A slide is a translatory movement, sliding of one joint surface over another. Arthrokinematics 11 Norkin and Levengie 12. This happens because our bone surfaces articulate at the joint. Osteokinematics is the gross movement that happens between two bones. Distribution of muscle force, F e and F f, influences the magnitude, R, and the direction, F, of resultant force on the elbow joint. To fully comprehend the arthrokinematics of the AO joint, we must know the plane of the joint. Osteokinematics 8 Naming the rotation- based on orientation of tibial tuberosity with respect to distal anterior femur Neumann, 2010 9. There are 2 degrees of freedom in the AO joint: flexion/extension and frontal sidebend (Abernethy, 2014). It gets its name from the shape as it has a concave surface in one direction and convex in another, like a saddle. ; A spin is a rotary movement, one body spinning on another. During dorsiflexion, the talus rolls anteriorly and it glides posteriorly. Definition. This range of motion is measured in degrees, using a goniometer. 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