MT- Forearm and hand complex

humerus

radius

ulna

carpals

metacarpals

phalanges

humeroradial joint

humeroulnar joint

proximal radial joint

radiocarpal joint

distal carpal joint

midcarpal joints

carpometacarpal joints

intermetacarpal joints

metacarpalphalangeal joints

proximal interphalangeal joints

distal interphalangeal joints

O: distal half of anterior surface of humerus

I: tuberosity and coronoid of ulna

A: flex the elbow

O: lateral suprcondylar ridge of humerus

I: Styloid process of radius

A: flex the elbow

• O: longus: lateral supracondylar ridge of humerus
• brevis: lateral epicondyle of humerus

• I: longus: base of second metacarpal
• brevis: base of third metacarpal

• A: Extend and abduct the wrist
• assists the flexing of the elbow

O: lateral epicondyle of humerus

I: base of fifth metacarpal

A: extend and adduct the wrist

O: lateral epicondyle of humerus

I: bases of middle and distal phalanges of second through fifth fingers

A: extends 2-5 fingers and extends the wrist

O: lateral epicondyle of the humerus

I: olecranon process and posterior, proximal surface of ulna

A: extend the elbow

O: surface of distal shaft of ulna and interosseous membrane

I: second metacarpal ; tendon of distal shaft of ulna

• A: extend, adduct, second finger
• extend wrist

O: as one mass from the common flexer tendon at the medial epicondyle of humerus

I: at the philanges

A: flexion of fingers

O: common flexor tendon from medial epicondyle of humerus and coronoid process of ulna

I: middle of lateral surface of radius

• A: pronate forearm
• assist flex in elbow

O: medial, anterior surface of distal radiu

I: lateral , anterior surface of distal radius

A:pronate forearm