MSK Flashcards
List the main features of the palm? (2)
- Palmar aponeurosis
- Flexor retinaculum
Where is the hand palm aponeurosis?
In superifical longitudunal layer contunous with palmaris longus tendon
Where is the flexor retinaculum?
Thick connective tissue forming the roof of carpal tunnel on palmar side
What is the carpal tunnel?
Narrow passageway on anterior wrist
What is the carpal tunnel the entrance for? (3)
- Median nerve
- Flexor polliicus longus in its own synovial sheath
- Tendons: 4x flexor digtorium superficious/sublimus and 4xflexor digitorum profundus in one synovial sheath
Label carpal tunnel
See notes
Label major features of palm
See notes
Describe the carpal tunnel (5)
- Carpal bones form floor
- Flexor retinaculum forms roof
- Anterior: 4x flexor digtorium superficious/sublimus below flexor retinaculum
- Posteriorly: 4xflexor digitorum profundus
- Median nerve and flexor pollicus longus laterally
What actions are produced by the wrist joint?
- Flexion
- Extension
- Adduction
- Abduction
What muscles produce flexion at the wrist joint? (3)
- Flexor carpi ulnaris
- Flexor carpi radialis - (Some) flexor digitorum superficialis
What are the 4 parts of the limbs?
- Forearm
- Arm
- Thigh
- Leg
What are the muscle compartments of the forearm? (2)
- Anterior
- Posterior
What categories are the muscles of the anterior compartment of the forearm? (3)
- Superficial
- Intermediate
- Deep
What are the actions of the muscles of the anterior compartment of the forearm? (3)
- Wrist flexion
- Finger flexion
- Pronation
What are the muscles of the superficial anterior compartment of the forearm medial to lateral? (4)
- Pronator teres (further up)
- Flexor carpi radialis
- Palmaris longus
- Flexor carpi ulnaris
What muscle is in the intermediate anterior compartment of the forearm?
Flexor digitorum superficialis
Where is the flexor digitorum superficialis?
Below the superficial anterior compartment of the forearm muscles
What passes between the two heads of the flexor digitorum superficialis? (2)
- Ulnar nerve
- Median artery
What muscles is in the deep anterior compartment of the forearm?
- Flexor digitorum profundus
- Flexor pollicis longus
- Pronator quadratus
What does pronator quadratus look like?
Square shaped deep to flexor digitorum profundus and flexor pollicis longus
Where is the flexor digitorum profundus?
Medial to flexor pollicus longus
Attached to ulnar
Where is the flexor pollicus longus?
Lateral to flexor digotorium profundus
Attached to radius
Splits into 4 tendons
What is the common action of the posterior compartent of the forearm?
Extension of wrist and fingers
What are the superficial muscles of the posterior forearm compartment? (^)
- Brachioradialis
- Extensor carpi radialis longus and brevis
- Extensor digitorum
- Extensor digit minimi
- Extensor carpi ulnaris
- Anconeus
