3 - Kines - Unit 2 - Forearm, Wrist & Hand Flashcards
Bones - Quantity in forearms, wrists & hands
60 bones
Including distal ends of humerus in both arms
Bones - 6 types of bones in forearms, wrists & hands
- Humerus - Arm bones (x2)
- Radius - Lateral forearm bones (x2)
- Ulna - Medial forearm bones - (x2)
- Carpals - Wrist bones - (x16 - 8 per wrist)
- Metacarpals - Hand bones - (x10 - 5 per hand)
- Phalanxes - Finger bones - (x28 - 14 per hand)
Landmarks - Definition - Condyle
Rounded, knuckle-like projection at the end of a bone usually at a joint
Landmarks - Definition - Epicondyle
Bony prominence upon a condyle
Landmarks - Definition - Fossa
Shallow depression or dent in a bone
Landmarks - Definition - Trochlea
Latin for “pulley” or “spool”
Landmarks - Definition - Tuberosity
Large, rounded, usually roughened protuberance
Landmarks - Humerus
- Medial Condyle
- Lateral Condyle
- Medial supracondylar ridge
- Lateral supracondylar ridge
- Medial epicondyle
- Lateral epicondyle
- Coronoid fossa
- Radial fossa
- Trochlea - the “pulley” or “spool” shaped landmark on the distal humerus [important for MBLEX]
- Capitulum - articulates with the head of the radius [important for MBLEX]
- Olecranon fossa [important for MBLEX]
Landmarks - Radius
- Head of radius - articulates with the capitulum of the humerus
- Neck of radius
- Radial tuberosity - the insertion for the biceps brachii
- Styloid process
Landmarks - Ulna
- Olecranon process (the “point” of the elbow) - the insertion for the triceps brachii
- Trochlear process
- Coronoid process
- Radial notch of ulna
- Tuberosity of ulna
- Head of the ulna
- Styloid process of ulna
Landmarks - Carpals
Distal row:
- Hamate
- Capitate
- Trapezoid
- Trapezium
Proximal row:
- Pisiform - a sesamoid bone [important for MBLEX]
- Triquetrum
- Lunate
- Scaphoid
Landmarks - Metacarpals
Numbered 1-5 with thumb being #1
Landmarks - Phalanxes
- First digit : the thumb
Terms pollux, pollex, pollicus & pollicis refer to thumb
Thumb has 2 phalanxes - Four other digits : 3 phalanxes each
Joints - Quantity & names
11 different joints found within forearm and hand
- Humeroradial joint
- Humeroulnar joint
- Proximal Radioulnar joint
- Distal Radioulnar joint
- Radiocarpal joint
- Midcarpal joint
- Carpometacarpal joint of the first digit/phalange (thumb)
- Carpometacarpal joints of the second to fifth digits/phalanges
- Metacarpophalangeal joint (MCP)
- Proximal interphalangeal joint (PIP)
- Distal interphalangeal joint (DIP)
Joints - Humeroradial joint
Distal humerus + proximal radius
Joints - Humeroulnar joint
Distal humerus + proximal ulna
Joints - “Elbow” joint
Humeroradial joint + humeroulnar joint
Hinge joint
Joints - Proximal Radioulnar joint
Proximal radius + proximal ulna
Pivot joint
(MBLEX)
Joints - Distal Radioulnar joint
Distal radius + distal ulna
Gliding joint
Joints - Radiocarpal joint
Distal radius + proximal carpals
Ellipsoid joint
(MBLEX)