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Anatomy - MSK/Rheum
Terms in this set (111)
Are rami sensory, motor, or both?
Is the dorsal root sensory or motor?
Is the ventral root sensory or motor?
What are the terminal branches from the brachial plexus?
Where are clavicular fractures most common?
Middle third of clavicle
What nerve roots make up the long thoracic nerve?
C5, C6, C7
(NOT a terminal branch)
What does damage to the long thoracic nerve cause?
Where does the axillary nerve run?
Posterior to surgical neck of humerus
Stays in shoulder region!
What nerve does sensory to the shoulder joint?
What nerve provides sensory to the cutaneous region over the deltoid muscle?
If the axillary nerve is injured, what movement is lost?
Abduction of arm
What muscles make up the rotator cuff?
What structures are in the quadrangular space of the scapular region?
Posterior humeral circumflex artery
(INFERIOR to the joint)
What ligament protects the superior aspect of the glenohumeral joint?
What is the nerve supply to the glenohumeral joint?
Is the shoulder a deep or shallow ball and socket joint?
What is anterior to the glenohumeral joint?
What is posterior to the glenohumeral joint?
Teres minor muscle
What is superior to the glenohumeral joint?
What type of joint is the acromioclavicular joint?
Synovial plane joint
What type of joint is the glenohumeral joint?
Synovial ball and socket
What nerve supplies the acromioclavicular joint?
What nerve provides motor innervation to the anterior (flexor) compartment of the arm?
Musculocutaneous (C5, C6, C7)
What cutaneous sensory innervation does the musculocutaneous nerve supply?
Lateral side of anterior forearm
What nerve provides sensory to the posterior arm and forearm and the posterior surface below fingertips of lateral 3.5 fingers?
Radial nerve (C5-T1)
What are the compartments of the arm?
Where does the subclavian artery become the axillary artery?
Lateral border of the first rib
Where does the axillary artery become the brachial artery?
Lower border of teres major muscle
What nerve does the brachial artery run closest to?
What does the brachial artery divide into?
Radial and ulnar arteries
(branches at neck of radius)
What is the profunda brachii artery?
Branch of the brachial artery that runs with the radial nerve
What type of joint is the olecranal joint?
Synovial hinge joint
Where does the ulnar nerve run in relation to the olecranal joint?
Medially, the ulnar nerve passes
behind the medial epicondyle
and crosses the medial ligament of the joint
Is the supinator a posterior or anterior forearm muscle?
What nerve innervates the supinator?
Is the pronator teres a posterior or anterior forearm muscle?
What nerve innervates the pronator teres?
What type of joint are the radioulnar joints (proximal and distal)?
Synovial pivotal joint
What articulates in the distal radioulnar joint?
Ulnar notch of radius and ulnar head
What articulates in the proximal radioulnar joint?
Radial notch of ulna and radial head
In dislocation of the proximal radioulnar joint, what does the radial head subluxate from?
Annular ligament of radius
What does the median nerve provide sensory to?
Palmar surface of first 3.5 digits
Dorsal finger nail region of first 3.5 digits
What does the ulnar nerve supply sensory to?
What separates the anterior and posterior compartments in the forearm?
Is the brachioradialis in the anterior or posterior compartment?
CONTRAINDICATES THE ACTION - BRACHIORADIALIS FLEXES
Where does the flexor retinaculum connect on the ulnar side?
Hook of hamate
Where does the flexor retinaculum connect on the radial side?
What nerve runs through the flexor retinaculum?
What type of joint is the radiocarpal joint?
Synovial ellipsoid/condyloid joint
What is a colles fracture?
Complete transverse fracture of the distal 2cm of the radius
What type of fracture usually occurs due to a fall on the palm when the hand is abducted?
What is a fracture of the 5th metacarpal neck?
What type of joints are the intercarpal and intermetacarpal joints?
Synovial plane joints
What type of joint is the carpometacarpal joint of the thumb?
What type of joint is the metacarpophalangeal and metatarsophalangeal joint?
What type of joint is the interphalangeal joint?
What arteries supply the superficial palmar arch?
Superficial palmar branch of radial artery
What arteries supply the deep palmar arch?
Deep palmar branch of ulnar artery
What innervates the thenar eminence muscles of the hand?
What do lumbricals do?
Flex fingers at MP joints
Extend fingers at IP joints
How many lumbricals are there?
4 (in each hand)
What innervates the lumbricals?
Ulnar nerve and Median nerve
(Lumbricals 1 and 2: median
Lumbricals 3 and 4: ulnar)
What innervates the interossei muscles?
What are the actions of dorsal interossei and palmar interossei?
Dorsal: abduct fingers away from middle finger
Palmar: adduct fingers towards middle finger
How many interossei muscles are there?
4 dorsal, 3 palmar (in each hand)
What is ape hand deformity?
Thenar atrophy injures median nerve
Lost opposition, slight clawing of 2nd and 3rd fingers (loss of lumbrical innervation)
What deficits occur from an injury to the median nerve after the forearm muscles?
Distal median claw hand
Cannot EXTEND 2nd and 3rd fingers
What deficits occur from a proximal injury to the median nerve?
Cannot flex 2nd and 3rd fingers at MCP and IP joints
(cant make a fist)
What deficits occur from a proximal injury to the ulnar nerve?
Proximal ulnar claw hand
Cannot flex 4th or 5th fingers
(cant make a fist)
What deficits occur from a distal injury to the ulnar nerve?
Distal ulnar claw hand
Cannot extend 4th or 5th fingers
What deficits occur if all function is lost to the radial nerve?
No elbow extension
No digit extension
What causes Klumpke's Palsy?
Injury to inferior part of brachial plexus (C8 and T1)
Excessive abduction of arm
What causes Erb-Duchenne Palsy?
Injury to superior part of brachial plexus (C5 and C6)
Excessive increase in the angle between neck and shoulder
What motor loss results from erb-duchenne palsy?
Medially rotated arm
"Waiters tip position"
What is mononeuritis multiplex?
Isolated nerve damage to one nerve at a time
What does the sciatic nerve branch into and where does it branch?
Tibial nerve and Common fibular nerve
Branches at superior/apex of popliteal fossa
The pudendal nerve comes from what spinal nerves?
S2-S4 (ventral rami)
What is the action of the gluteus medius and gluteus minimus?
Abducts and medially rotates hip
What is the action of the sartorius muscle?
What is the action of the iliopsoas muscle?
What type of joint is the coxal joint?
Synovial ball and socket
What nerves innervate the coxal joint?
What type of cartilage is the acetabular labrum?
(good for shock absorbing)
What are the three extracapsular coxal ligaments and are they anterior or posterior?
What runs in the femoral sheath?
(NOT the femoral nerve)
What are the borders of the femoral triangle?
Superior: inguinal ligament
Medial: adductor longus
What muscle is deep to the femoral vein, artery, and nerve?
What does the obturator artery branch from?
Internal iliac artery
What does the femoral artery branch from?
External iliac artery
What nerve provides cutaneous sensory to the anteromedial portion of the thigh, leg, and medial malleolus?
Does the femoral nerve run medial or lateral to the femoral vessels?
What plexus does the femoral nerve arise from?
What plexus does the obturator nerve arise from?
What muscle is anterior to the gracilis at the perineum?
What nerve innervates the adductors of the thigh?
What are the adductors of the thigh?
adductor brevis, adductor longus, adductor magnus, gracilis
What nerve roots make up the sciatic nerve?
(from sacral plexus)
What are the components of the leg and thigh?
What type of joint is the tibiofemoral joint?
What does the common fibular nerve branch into?
What type of joint is the calcaneocuboid?
What type of joint is the talonavicular joint?
Triple planar joint
What muscle inverts the foot?
What muscles evert the foot?
What is the proper ankle joint?
Talocrural joint (hinge)
(tibia, fibular, and talus)
What is the subtalar joint?
articulation between talus and calcaneus
Triple planar joint
Is the deltoid ligament medial or lateral?
(ligament of the tarsal joint!)
What is the weakest lateral tarsal ligament?
Anterior talofibular ligament
What does the deltoid ligament connect?
Tibia to talus, navicular, and calcaneus
What is pronation of the foot?
eversion, abduction, dorsiflexion
What is supination of the foot?
inversion, adduction, plantar flexion
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