Lecture 16: Arm, Elbow, Forearm Flashcards
Which two joints in the shoulder can be separated?
Acromioclavicular, sternoclavicular
Which two ligaments encapsulate the acromioclavicular joint?
Acromioclavicular ligament, coracoclavicular ligament (2)
Which notches exist on the ulna?
Trochlear notch (large), radial notch (small)
What landmarks are found on either ends of the radius?
Styloid process (proximal to hand), radial head (proximal to elbow)
During hand supination, the radius and ulna are ________. During pronation, they are _______.
Parallel, crossed.
What is a foosh?
Fall on outstretched hand injury. Breaks off the styloid process of the radius.
What is the joint between the radius & ulna at wrist called?
The joint between radius/ulna and carpal bones?
Distal radioulnar joint.
Radiocarpal.
What are the phases of bones, listed wrist to fingertips?
Carpal bones, metacarpals, proximal phalanx, middle phalanx, distal phalanx.
CMC connect what? MCP?
Carpals + metacarpals.
Metacarpals + phalangeal.
PIP connect what? DIP?
Proximal phalanges + middle phalanges.
Middle phalanges + distal phalanges.
What are the four ligaments of the wrist?
Radial collateral, radiocarpal, ulnar collateral, radioulnar
What are the four groups of muscles acting on the wrist?
Forearm flexors, forearm extensors, forearm pronators, forearm supinators
What type of joint is the wrist? Which three brachial nerves are involved in the forearm? (hint: not same as arm)
Condyloid. Radial, median, ulnar
Name the 5 forearm flexors (superficial layer) and their functions. (hint: pass fail pass fail)
ALL MEDIAN….
Pronator teres = pronation
Flexor carpi radialis = abduct + flex wrist
Palmaris longus = tense palmar skin
Flexor carpi ulnaris = adduct + flex wrist (ULNAR)
Brachioradialis = flex elbow (RADIAL)
Name the three forearm flexors (middle + deep layers).
Flexor digitorum superficialis = PIP flexion (median)
Flexor digitorum profundus = DIP flexion (ulnar)
Pronator quadratus = forearm pronation (median0
