License Image deep extensors The deep extensors of the forearm are the supinator, abductor pollicis longus, extensor pollicis longus, extensor pollicis brevis, extensor indicis. The extrinsic hand muscles originate in the forearm and insert on structures within the hand. These muscles control movements of the wrist, hand, fingers and thumb. The supinator rotates, or supinates, […]
Musculoskeletal
Forearm Supination
License Image The supinator muscle rotates, or supinates, the forearm and hand. Other muscles that can perform this function are the biceps and brachioradialis.
Forearm Pronation
License Image The pronator teres and pronator quadratus muscles rotate, or pronate, the forearm and hand. A muscle that can assist in this function is the brachioradialis. Pronation of the forearm occurs at the radioulnar joint.
Hand X Ray
License Image The following bones are visible in this hand x ray: distal phalanges middle phalanges proximal phalanges metacarpal bones carpal bones radius ulna sesamoid bone The carpal bones are: trapezium trapezoid capitate hamate scaphoid lunate triquetral pisiform
Hand Bones
License Image anterior (palm) The bones of the hand consist of 14 phalanges, 5 metacarpals, and 8 carpals. The carpal bones are the: 1. trapezium 2. trapezoid 3. capitate 4. hamate 5. pisiform 6. triquetrum 7. lunate 8. scaphoid
Hand Bones
License Image posterior (dorsal hand) The bones of the hand consist of 14 phalanges, 5 metacarpals, and 8 carpals. The carpal bones are the: 1. trapezium 2. trapezoid 3. capitate 4. hamate 5. pisiform (not shown) 6. triquetrum 7. lunate 8. scaphoid
Hand Muscles Thenar
License Image thenar eminence The intrinsic muscles of the hand are divided into three groups: (1) those of the thumb, the thenar eminence (2) those of the little finger, the hypothenar eminence (3) and those in the middle of the palm and between the metacarpal bones. The muscles of the thenar eminence are: adductor policis (transverse) adductor […]
Hand Muscles Hypothenar
License Image hypothenar eminence The muscles of the hand can be intrinsic (located within the hand) or extrinsic (originate outside the hand and insert within it). The forearm muscles that control the actions of the wrist, hand, thumb and fingers are extrinsic hand muscles. The hypothenar eminence is a group of three intrinsic hand muscles, […]
Carpal Tunnel
License Image The flexor retinaculum (transverse carpal ligament), is a strong, fibrous band that arches over the wrist, converting the deep groove on the front of the carpal bones into a tunnel, the carpal tunnel, through which the flexor tendons of the hand and the median nerve pass. Nine extrinsic flexor tendons pass through the carpal tunnel. They are: the flexor pollicis longus, […]
Leg Bones
License Image The bones of the leg are the femur, tibia, fibula and patella. The foot bones shown in this diagram are the talus, navicular, cuneiform, cuboid, metatarsals and calcaneus. The knee joint is the largest joint in the body and is primarily a hinge joint, although some sliding and rotation occur. The intercondylar eminence […]
Knee Joint – Cruciate Ligaments
License Image This view shows the front of the knee with the knee joint bent. The ligaments, tendons and muscles surrounding the knee joint support and strengthen it. The tibial and femoral condyles are covered by articular cartilage and are cushioned and supported by the menisci. The tibial collateral ligament on the inside of the […]
Knee Joint Cross Section
License Image The tibial and femoral condyles are covered by articular cartilage and are cushioned and supported by the menisci. The menisci are thicker at their edges giving them a wedge like shape. The patellar ligament is formed by the middle portion of the quadriceps femoris tendon. It attaches to the patella and then continues […]
Medial and Lateral Meniscus
License Image Looking down on the open knee joint from above you can see the medial and lateral menisci on the articular surface of the tibia. The C shaped menisci are flattened fibrocartilaginous discs that help to cushion the knee joint and assist in rotation. They are attached to the tibial condyles by their outer […]
Anatomy of the Foot
License Image Structures of the foot shown in this illustration are: extensor brevis and longus muscles triceps surae muscle superior fibular retinaculum tibialis anterior muscle extensor hallucis longus muscle extensor digitorum longus muscle superior extensor retinaculum inferior extensor retinaculum extensor digitorum brevis muscle inferior fibular retinaculum abductor digiti minimi muscle
Foot Muscles
Muscles on the sole of the foot that control movement of the toes.
Foot Muscles
License Image Muscles on the sole of the foot.
Foot Muscles
License Image Muscles on the sole of the foot.
