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Stack #2331666

Elbow, Wrist and Hand

Spool shape structure located on medial side of distal humerus; articulates with ulna (humeroulnar joint) trochlea
Small pit located superior to trochlea; accepts coronoid process of ulna coronoid fossa
Lateral to the trochlea; articulates head of radius to form humeral joint capitulum
Four bones related to function of elbow and forearm scapula, distal humerus, ulna , radius
Proximal attachment for most wrist flexor muscles; pronator teres and medial collateral ligament (elbow) medial epicondyle
Proximal attachment for most extensor muscles; supinator and lateral collateral ligament (elbow) lateral epicondyle
Medial and lateral supracondylar ridges are located in distal humerus
Olecranon fossa located in distal humerus
Medial collateral ligament equals ulnar
Lateral collateral ligament equals radius
Olecranon progress is the distal attachment for triceps muscles
Jaw-like curvature of proximal ulna; articulates with trochlea trochlea notch
The articulation of humeroulnar joint by grabbing the trochlea coronoid process
Articulates radial head to form proximal radioulnar joint radial notch
Distal end of ulna styloid process
Articulates with humeral capitulum; forms humeradial joint radial head
Primary distal attachment for biceps brachii bicipital tuberosity (radial tuberosity )
Styloid process is located on the radius
Ulnar notch is located on the radius
Provides elbow stability; hinge joint humeroulnar joint
Formed by capitulum and articulates with fovea; continuous contraction between radial head and capitulum ( supination, pronation, flexion and extension ) humeroradial joint
The longitudinal axis of humerus and forearm (humerus connects to ulna and radius) carrying angle
Outward angulation of forearm (frontal plane) cubitis valgus
Called "carrying angle" because it keeps a carried object away from from body cubitis valgus
Male normal ranges for cubitis valgus 10-15 degrees
Female normal ranges for cubitis valgus 20-25 degrees
Encloses humeroradial, humeroulnar and radioulnar joints articular capsule
Provides stability by resisting cubitis valgus medial collateral ligament
Originates on lateral epicondyle and splits into radial collateral ligament lateral collateral ligament
Which ligament attaches to annular ligament and medial ulnar collateral ligament lateral collateral ligament
Elbow flexion and extension occur in_________ plane about _________ axis of rotation saggital, medial-lateral
Elbow joint range of motion is 5 degrees beyond extension to 145 flexion
Most elbow activities use 100 degree arc of motion ; between 30-130 degrees of flexion
Position of comfort is 70-90 degrees
Compare elbow flexion with extension to get the different types of end feel
Joints that work together to perform supination and pronation of forearm (2) proximal and distal radioulnar joints
Holds the radial head against the ulna; spinning freely during supination and pronation annular ligament
Palmar and dorsal capsular ligaments reinforced by distal radioulnar joint capsule
A site for muscular attachment and transmit forces proximal through the forearm interosseous membrane
Nurse's maid elbow is annular ligament
The 0 or neutral position of the forearm is thumb up position
Thumb up position for supination is ________, and pronation is _________ 80-85 degrees (supination), 75-80 degrees (pronation)
Radius moves and ulna stays fixed (stationary)
Radius head spins in place, in the direction of the moving thumb
Distal radius rolls and slides in same direction to ulnar head
Fibers transmit compressive forces from hand to upper arm through the interosseous membrane
Push up actions create compressive force through the hand to wrist, _______ is transmitted through radius at radiocarpal joint 80% (interosseous membrane )
What and where is passed up through the radius and shared with ulna; transferred to shoulder force, interosseous membrane
Humeroulnar open packed position __________ and closed packed position _______________ (open)- 70 degrees flexion, 10 degrees supination (closed)- full extension and supination
Humeroradial open packed position __________ and closed packed position ________________ (open)- full extension and supination (closed)- 90 degrees flexion , 5 degrees supination
Distal radioulnar open packed position ___________ and closed packed position _________________ (open)- 10 degrees supination (closed)- 5 degrees supination
Proximal radioulnar open packed position __________ and closed packed position _____________ (open)- 70 degrees flexion, 35 degrees supination (closed)- 5 degrees supination , full extension
Supplies elbow flexors; except brachioradialis and pronator teres musculocutaneous nerve
Supplies all muscles that extend elbow and wrist radial nerve
Supplies all pronator of the forearm and wrist flexors; (phalanges 1-3) median nerve
What are the elbow flexors (3) biceps brachii, brachialis, brachioradialis
Name a secondary elbow flexor pronator teres
Brachialis does not __________ or ____________ the forearm supinate or pronate
Brachialis is needed for ___________, if supination is required biceps brachii is recruited flexion
What are the elbow extensors (2) triceps brachii and aconeus
What are the primary supinators (2) biceps brachii and supinator
What are the secondary supinators (2) extensor longus pollicis and extensor indicis
Effectiveness of biceps brachii (supinator) is greatest when elbow is flexed to 90 degrees
What are the primary pronators (2) pronator teres and pronator quadratus
When pronator teres is activated, elbow will flex unless neutralized by __________ muscles triceps
Tommy John Surgey is what kind of condition ulnar collateral ligament rupture
MCL injuries is what kind of condition pulled elbow syndrome
What makes up the osteology of the wrist (3) distal ulna , distal radius, carpal bones
What is the name of the dorsal aspect of the radius Lister's tubercule
How many carpal bones are there 8 bones
What are the names of the proximal row carpal bones (4) scaphoid, lunate, triquetrum, and pistiform
What are the names of the distal row carpal bones (4) trapezium, trapezoid, capitate, hamate
Bones within the proximal row are_________ joined; strong ligaments bind distal row loosely
Which row provides stability and ridge brace for articulations with metacarpal bones distal row
Formed by transverse carpal ligament bridging the palmar side (carpal bones) carpal tunnel
A passageway that helps protect the median nerve and tendons of flexor muscles of digits carpal tunnel
What joint's proximal part consists of the concave surface of the radius and articular disc radiocarpal joint
What distal part consists primarily of the convex articular proximal surface of scaphoid and lunate radiocarpal joint
Name the space that helps buffer forces that cross the wrist ulnocarpal space
What complex is located in the ulnocarpal space triangular fibrocartilage complex
Name the articulation that is formed between the head of capitate and distal surfaces of scaphoid and lunate midcarpal joint
What are the 3 joints that make up the arthrology of the wrist radiocarpal joint, midcarpal joint and intercarpal joints
Dorsal radiocarpal ligaments resists extremes of flexion
Radial collateral ligament resists extremes of ulnar deviation
Palmer radiocarpal ligament resists extremes of wrist extension
Ulnar collateral ligament resists extremes of radial deviation
__________ ligaments have proximal attachments outside carpal bones, but attach distal within carpal bones extrinsic
___________ ligaments have both proximal and distal attachments located within carpal bones intrinsic
If the wrist becomes unstable, pain and weakness jepardize the hand
Name the 4 primary motions of the wrist flexion and extension ulnar and radial deviation
In the wrist, what plane does flexion and extension occur saggital plane
In the wrist, how much flexion and extension 70-80 degrees of flexion 60-70 degrees of extension
In the wrist, how much ulnar and radial deviation 30-35 degrees of ulnar deviation 15-20 degrees of radial deviation
In the wrist, what plane does ulnar and radial deviation occur frontal plane
How many degrees of freedom are allowed at the wrist 2
The axis of rotation occurs at the head of capitate
In an open chain position is flexion/ extension occurring convex-on-concave or concave -on-convex convex-on-concave (roll-n-slide in opposite directions) ex) radial and carpals
How do the arthrokinematics of ulnar / radial deviation differ from flexion and extension convex-on-concave
Radiocarpal joint open packed position _____________ and closed packed position __________ (open)- neutral and ulnar deviation (closed)- full extension and radial deviation
Midcarpal joint open packed position ___________ and closed packed position _______________ (open)- neutral and flexion, ulnar deviation (closed)- full extension
Radial nerve innervates the wrist
Median and ulnar nerve innervates all primary wrist flexor muscles
Name the (3) wrist extensors that originate from the lateral epicondyle extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris
Name the (3) wrist flexors that originate from the medial epicondyle flexor carpi radialis, flexor carpi ulnaris, palmaris longus
How is pure flexion achieved activities of the flexor carpi radialis and flexor carpi ulnaris
Name the radial and ulnar deviator wrist muscles (4) extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris, flexor carpi ulnaris
What muscles are used for grasp and controlling objects in the hands (4) extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris, flexor carpi ulnaris
Name (3) conditions of the wrist medial and lateral epicondylitis , Colles fracture (distal radial fracture), and carpal tunnel syndrome
Created by: Shannon10
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