Upper extremities Flashcards
Spinal Accessory Nerve, C3, C4
Trapezius - shoulder shrug against resistance
Spinal Accessory Nerve, C3, C4
Trapezius - push palms of hands hard against wall, elbows fully extended - can see and feel the lower fibres of trapezius
Brachial Plexus, C5, C6, C7, C8, T1 complete lesions
lateral shoulder to just above the elbow, complete lower arm
Brachial Plexus, C5, C6, lesions in upper roots
Lateral shoulder and arm including thumb
Brachial Plexus, C8, T1, lesions in lower roots
medial elbow down to last two fingers
Rhomboids (dorsal scapular nerve: C4, C5
Arm behind back, press palm of hand backwards against examiner’s hand
Serratus anterior (Long thoracic nerve: C5, C6, C7
Patient pushes against a wall. If serratus anterior is paralysed, there is winging of the scapula
Pectoralis Major: clavicular head (lateral pectoral nerve: C5, C6
Pectoralis Major: Clavicular Head (Lateral pectoral nerve; CS, C6)
The upper arm is above the horizontal and the patient is pushing forward against the
examiner’s hand. Arrow: the clavicular head of pectoralis major can be seen and felt.
Pectoralis Major: Sternocostal Head (Lateral and medial pectoral nerves; C6, C7, C8
The patient is adducting the upper arm against resistance.
Arrow: the sternocostal head can be seen and felt.
Supraspinatus (Suprascapular nerve; C5,C6
The patient is abducting the upper arm against resistance.
Arrow: the muscle belly can be felt and sometimes seen.
Infraspinatus (Suprascapular nerve; C5, C6
The patient is externally rotating the upper arm at the shoulder against resistance. The
examiner’s right hand is resisting the movement and supporting the forearm with the
elbow at a right angle; his left hand is supporting the elbow and preventing abduction of
the arm. Arrow: the muscle belly can be seen and felt.
Latissimus Dorsi (Thoracodorsal nerve; C6, C7, C8)
The upper arm is horizontal and the patient is adducting it against resistance. Lower
arrow: the muscle belly can be seen and felt. The upper arrow points to teres major.
Latissimus Dorsi (Thoracodorsal nerve; C6, C7, C8)
Latissimus Dorsi (Thoracodorsal nerve; C6, C7, CS) The muscle bellies can be felt to contract when the patient coughs.
Teres Major (Subscapular nerve; C5, C6, C7
The patient is adducting the elevated upper arm against resistance.
Arrow: the muscle belly can be seen and felt.
Musculocutaneous Nerve - supplies muscles ___
Coracobrachialis, Biceps, Brachialis
Lesions of the musculocutaneous nerve cause sensory changes in the distribution of the lateral cutaneous nerve of the forearm.
affected area: Lateral forearm from elbow to wrist