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Anatomy: Arm
Upper extremity one liners
Question | Answer |
---|---|
Most frequently fractured bone of body | Clavicle |
Most frequently dislocated carpal bone | Lunate |
Most frequently fractured carpal bone | Scaphoid |
Osseous structure palpated deep to “anatomical snuff box” | Scaphoid |
Fracture of distal radius that produces “dinner fork” appearance | Colles’ fracture |
Nerve injured with fracture of surgical neck of humerus | Axillary |
Nerve injured with fracture of shaft of humerus | Radial |
Nerve injured that results in wrist drop | Radial |
Nerve injured with fracture of medial humeral epicondyle | Ulnar |
Muscle that is the chief flexor and chief extensor at shoulder joint | Deltoid |
Muscles innervated by axillary nerve | Deltoid and teres minor |
Muscle that initiates abduction of arm | Supraspinatus |
Most commonly torn tendon of rotator cuff | Supraspinatus |
Two muscles that rotate scapula for full abduction of arm | Trapezius and serratus anterior |
Tendon that courses through shoulder joint | Long head of biceps |
Chief supinator muscle of hand | Biceps brachii |
Primary (major) flexor of the forearm | Brachialis |
Orientation of structures located in the cubital fossa-Lateral to Medial | Tendon biceps brachii, brachial a.,median n. |
Injury to what nerve causes winged scapula | Long thoracic nerve |
Spinal levels of axillary nerve | C5 and C6 |
Spinal levels of innervation to muscles of the hand | C8 and T1 |
Dermatome of thumb | C6 |
Nerve to thenar compartment | Recurrent branch of Median |
Innervation of adductor pollicis | Ulnar (deep br.) |
Innervation to all interosseous muscles | Ulnar (deep br.) |
Innervation to nail bed of middle finger | Median nerve |
Innervation to nail bed of ring finger | Ulnar and median |
Region affected by upper trunk injury of brachial plexus (C5-C6) | Shoulder |
Region affected by lower trunk injury of brachial plexus (C8-T1) | Intrinsic hand muscles |
Nerve compressed with carpal tunnel syndrome | Median |
Nerve affected by cubital tunnel syndrome | Ulnar |
Paralysis of which muscles results in total “claw” hand | Lumbricals |