Motion There are two radioulnar joints: the proximal radioulnar joint and distalradioulnar joint. Both are synovial pivot joints. They permit pronation and supination only. Proximal radioulnar joint: The circumference of the radial head articulates with the fibro-osseous ring made by the ulnar radial notch and annular ligament. Distal radioulnar joint: The distal head of the

Anatomy Is a rhomboid or diamond shaped cavity lined with ependymal cells part of the series of fluid-filled cavities, which make up the ventricular system. It is located anterior to the cerebellum and posterior to the pons and superior half of the medulla. It is connected superiorly to the third ventricle via the cerebral aqueduct

Anatomy Otherwise referred to as the fourchette, this is the meeting of the labia minora behind the vagina, in front of the anus (their anterior meeting/junction swaddles the clitoris as prepuce and frenulum). It is part of the vulva (external genital organs – including mons, clitoris, urethra/vaginal orifices, labia majora/minora), itself part of the perineum

Anatomy Origin: Anterior surface of middle third of radius and adjacent interosseous membrane. Insertion: Base of the distal phalanx of thumb. Key Relations: -The tendons of flexor pollicis longus passes through the carpal tunnel as it enter the palm of the hand. -One of the three muscles in the deep anterior compartment of the forearm.

Anatomy Origin: Humeroulnar head: Medial epicondyle of humerus via the common flexor tendon, ulnar collateral ligament and coronoid process of ulna. Radial head: Superior half of anterior aspect of radius at anterior oblique line. Insertion: Four tendons of insertion attach to palmar surfaces of bodies of middle phalanges of the four fingers. Key Relations: -The

Anatomy Origin: Lower two-thirds of the posterior surface of the fibula, the posterior intermuscular septum and the posterior surface of the distal part of the interosseous membrane. Insertion: Plantar surface of the base of the distal phalanx of the hallux (big toe). Key relations: -One of the four muscles of the deep posterior compartment of

Anatomy Origin: Superficial part: Flexor retinaculum and tubercle of the trapezium. Deep part: Trapezoid and capitates. Insertion: Base of the proximal phalanx of thumb. Key Relations: Is one of the muscles of the thenar eminence of the hand. Functions Flexion of the thumb at the metacarpophalangeal joint. Supply Nerve Supply: Superficial part: Recurrent branch of

Anatomy Origin: Hook of the hamate and the ulnar border of the flexor retinaculum. Insertion: Ulnar aspect of the base of the proximal phalanx of the little finger. Key Relations: -Is one of the muscles of the hypothenar eminence of the hand. -Abductor digiti minimi lies on its lateral side and the two muscels are

Anatomy Origin: Plantar surface of the base of the 5th metatarsal and sheath of adjacent fibularis longus tendon. Insertion: Base of the 5th proximal phalanx. Key Relations: Runs along the lateral aspect of the foot. See plantar view of flexor digiti minimi brevis of foot.. Functions Flexes the 5th toe at metatarsophalangeal joint. Supply Nerve

Anatomy Origin: Medial process of the calcaneal tuberosity and plantar aponeurosis. Insertion: Sides of the plantar surface of the middle phalanges of the lateral 4 toes. Key relations: -Lies superior to the plantar aponeurosis. -Gives rise to 4 tendons that lie superficial to the flexor digitorum longus tendons. See plantar view of flexor digitorum brevis.