Forearm and Hand X Flashcards
Lateral epicondyltis
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tennis elbow - inflammation of tendon at lateral epicondyle
Results for overuse
Carpal Tunnel Syndrome
**
most common nerve entrapment
Median nerve trapped through bony carpal tunnel
Scaphoid Bone fractures
**
fractured frequently with fall onto outstretched hand. can go undiagnosed
Mallet finger
**
Overstretching or tearing of extensor tendon. finger wot straighten at tip
Trigger Finger
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inflammation in flexor tendons or associated digital sheaths. sheath or tendon may thicken or nodules form = decreased ability of tendon to glide through sheath during finger movements.
Bicipital aponeurosis
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covering for the brachial artery and median nerve
Contents of Cubital fossa (L->M)
**
tendon of biceps brachii, brachial artery, median nerve
Compartments of the Forearm
Anterior (Flexor)
Posterior (Extensor)
Lateral Intermuscular Septum
Interosseous Membrane (connect Radius and Ulna)
Anterior Forearm Compartment - Genral parts,Fxns
Superficial, Intermediate, Deep
Movements of the wrist joint
Flexion of the fingers and thumb
Pronation of the forearm
Anterior forearm - Superficial Muscles (L->M)
Pronator Teres
Flexor Capilaris Radialis
Palmaris Longus
Flexor Capilaris Ulnaris
Anterior Arm - Intermediate Muscles, importance
Flexor digitorum superficilias (two heads) Median nerve (just deep) ulnar artery (just deep)
Anterior Arm - Deep Muscles
Flexor digitorum porofundus
Flexor pollicis longus
Pronator Quadratus
Radial Artery - location
Superficially
Anterior lateral area of wrist
DOESNOT run with radial artery
Ulnar Artery
SUperficial
Anterior medial in wrist
Branches to ant and post Interosseous arteries that will be medial to wrist.
What doesnt pass through Carpal Tunnel?
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ulnar nerve and artery, and palmar cutaneous branch of median nerve
Carpal tunnel components
**
Median nerve
tendons of FDS, FDP, FPL
Thenar Muscles - list, innervation
Abductor Pollis Brevis
Flexor Pollis Brevis
Opponens Pollicis
recurrent branch - median nerve
Hypothenar Muscles - list, innervation
Abductor digiti minimi
Flexor Digiti minimi brevis
Opponed digiti minimi
Deep branch -ulnar nerve
Adductor Pollicis - fxn, innervation
Thumb movement
deep branch ulnar nerve
Lubricales - List, fxn
1,2,3,4
Flex at MCP joint,
Promote extension at PIP and DIP joints
Boundaries of Cubital Fossa
**
Between bracioradialis and pronator teres
Floor - brachialis
Arterial Supply - Palm
**
Superfical Arch - ulnar and radial arteries
Sensory Innervation - palm
**
Median nerve to palm - superfical branch
Boundaries of snuffbox
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(Lateral) Abductor Polliccis Longus/Extensor Pollicis Brevis
(Medial) Extensor Pollicis Longus
(Floor) Schaphoid and Trapezium
distal tendons of extensor carpi radialis longus and brevis
(Bottom) Extensor Retinaculum
Structures of snuffbox, clinical significance
***
Radial Artery
Scaphoid fracture = radial artery compressed
NO blood supply to bone = degeneration
significance of extensor hood
***
Tendons of ED and EPL pass to dorsal hand and expand over phalanges
Intrinsic have muscles insert to allow fine movements
Lateral Epicondylitis - affected muscles and movements
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Inflammation and pain at tendons of Lateral epicondyle, Tennis elbow
Affects muscles of posterior arm - specifically extensor carpi radialis brevis
Affects wrist extension, gfip strength
Carpal Tunnel Syndrome - symptoms
***
Pain,weakness, numbeness in fingers, including thumb but not including palm or little finger due to compression of median nerve in carpal tunnel
Deep Branch of Radial Nerve could get entrapped under suppinator
KNOW
Ulnar Eminence
Hamate and Pisiform
Radial Eminence
Trapezium and Schappoind
