The Vimbasi Warriors, Mechanics of Asking Out. The process used to skip beyond getting a woman's phone number to successfully and powerfully getting a date with her.
ksjdksfsbmDeskripsi lengkap
Pemeriksaan FisioterapiDeskripsi lengkap
Pemeriksaan FisioterapiDeskripsi lengkap
Descripción completa
ksjdksfsbmFull description
introduction to pelvic and hip biomechanicsFull description
jeldkDeskripsi lengkap
Pemeriksaan FisioterapiFull description
It describes everything that is related to consciousness.Full description
Joints of Elbow • Humeroradial joint – gliding joint in which the capitellum of the humerus articulates with the proximal end of the radius
Joints of Elbow • Humeroulnar joint – hinge joint in which the humeral trochlea articulates with the trochlear fossa of the ulna
Joints of Elbow • Radioulnar joint – the proximal and distal radioulnar joints are pivot joints
Ligaments of the Elbow
Lateral Ligamentous Structures • Lateral/radial collateral ligament – origin is near axis of elbow flexion/extension, so fibers uniformly tight throughout ROM
• Annular ligament – inserts on anterior/posterior margins of lesser (radial) semilunar notch, maintains radial head in contact with ulna (forms 4/5 of fibroosseous ring)
Ligaments of the Elbow
Medial Ligamentous Structures • Medial/Ulnar Collateral Ligament – Anterior bundle – most discrete segment – Posterior bundle – thickening of posterior capsule – Transverse bundle – spans medial border of semilunar notch, little/no contribution to elbow stability
Vascular
Vascular
Nervous Innervation
Median nerve Ulnar nerve Radial nerve
Median Nerve
Ulnar Nerve
Range of Motion • Flexion/extension – ginglymus joint (ulnohumeral articulation) • Flexion typically 0-150 degrees, stops due to soft tissue approximation • Extension typically 0-10 degrees (hyperextension, especially in females), stops due to bony opposition
Range of Motion • Forearm pronation and supination – trochoid joint (radiohumeral and proximal radioulnar articulations) • Pronation/supination typical 0-85/90 degrees each from neutral point (thumb up), stops due to tissue tensions/stretch from opposing tissue
Movements of the Elbow
Movements of the Elbow • Flexion – Brachialis – Biceps Brachii – Brachioradialis
Brachialis Biceps brachii Brachioradialis
Movements of the Elbow • Extension – Triceps Brachii – Assisted By: • Anconeus
Anconeus Triceps brachii
Movements of the Elbow • Pronation – Pronator teres – Pronator quadratus
Movements of the Elbow • Supination – Supinator – Biceps brachii
Biceps brachii Supinator
Movements of the Elbow • Supination – Extensor group • Supinator • Extensor carpi radialis longus • Extensor carpi radialis brevis • Extensor carpi ulnaris • Extensor digitorum
Extensor Carpi Radialis Longus
Extensor Carpi Ulnaris
Extensor Carpi Radialis Brevis
Extensor Digitorum
Supination and Pronation
Elbow Kinematics • One of the most congruous and stable joints • In extension, anterior capsule provides most restraint, while MCL becomes primary stabilizer at 90 degrees flexion • Annular ligament encircles the head of the radius, stabilizing it in the radial notch
Elbow Kinematics • Varus stress – In extension resisted by bone structure, LCL and lateral joint capsule – In flexion, resisted primarily by bone structure
• Valgus stress – In flexion, resisted primarily by MCL – In extension equally resisted by bone structure, MCL and medial joint capsule
Load on the Elbow
Load on the Elbow
Load on the Elbow
Biomechanics of Elbow Flexors • Dominant side produces higher flexion torque, work, and power • Flexion torques are 70% higher than extension • Flexion torques are 20-25% higher in supinated versus pronated positions due to increased flexor moment arm of biceps and brachioradialis • Max torque at 90°
Biomechanics of Elbow Extensors • Generate large and dynamic extensor torques through high-velocity concentric and eccentric activities (throw, push) • Shoulder flexion with pushing activity, counteracts the tendency of elbow extensors to extend the shoulder
