Full O.I.A.N Studyguide

Extensor Pollicis Brevis (I.A.N only)

I: base of proximal phalanx of the thumb

A: CMC and MCP extension

N: Radial Nerve

Middle Deltoid

O: Lateral third of the clavical

I: Deltoid Tuberosity

A: GH abduction

N: Axillary Nerve

Abductor Pollicis Brevis (A.N only)

A: Thumb CMC Abduction

N: Median Nerve

Gracilis

O: Pubis

I: Pes anserine

A: Hip adduction, knee flexion

N: Obturator Nerve

Gastrocnemeus

O: Posterior medial and lateral femoral condyles

I: Posterior calcaneus

A: Knee flexion, talocrual plantarflexion

N: Tibial nerve

Semimembranosous

O: Ischial tuberosity

I: Posterior tibia medial condyle

A: Hip extension, knee flexion

N: Sciatic nerve

Palmaris Longus

O: Medial epicondyle of the humerus

I: Palmar aponeurosis

A: Wrist flexion

N: Medial nerve

Flexor Carpi Radialis:

O: Medial epicondyle of the humerus

I: Base of the 2nd and 3rd metacarpal

A: Wrist flexion, radial deviation

N: Median nerve

Flexor Digitorum Profundus (I.A.N only)

I: Distal phalanx of the four fingers

A: Wrist, MCP, PIP, and DIP flexoin

N: Median nerve (radial side), Ulnar nerve (ulnar side)

Posterior Deltoid

O: Spine of the scapula

I: Deltoid tuberosity

A: GH extension, ER, horizontal abduction, and abduction

N: Axillary nerve

Flexor Pollicis Brevis (A.N only)

A: Thumb CMC and MCP flexion

I: Median Nerve

Extensor Pollicis Longus (I.A.N only)

I: Base of distal phalanx of the thumb

A: Thumb CMC, MCP, and IP extension

N: Radial Nerve

Flexor Pollicis Longus (I.A.N only)

I: Distal Phalanx of thumb

A: Thumb CMC, MCP, and IP flexion

N: Median nerve

Brachioradialis

O: lateral supracondylar ridge of the ulnar

I: Proximal radial styloid

A: Pronation or supination to neutral during flexion

N: Radial nerve

Soleus

O: Posterior interosseus membrane of the tibia and fibula

I: Posterior calcaneus

A: Talocrual plantar flexion

N: Tibial nerve

Rhomboids

O: Spinous process of C7-T5

I: Vertebral border of the scapula between base of the spine of the scapula and inferior angle

A: STA elevation, retraction, downward rotation

N: Dorsal scapular nerve

Flexor Digiti Minimi (A.N only)

A: 5th CMC flexion

I: Ulnar nerve

Flexor Digitorum Superficialis

O: Medial epicondyle of the humerus

I: side of the middle phalanx of the four fingers

A: Elbow, wrist, MCP, and PIP flexion

N: Median nerve

Anconeus

O: Lateral epicondyle of the humerus

I: Olecranon process and annular ligament

A: Prevents impingement of annular ligament during elbow extension

N: Radial nerve

Pectoralis Minor

O: Anterior surface of ribs 3-5

I: Coracoid process of scapula

A: Scapular depression, protraction, downward rotation, and anterior tilt

N: Medial pectoral nerve

Supinator

O: Lateral epicondyle of the humerus

I: Anterior surface of the proximal radius

A: RU Supination, elbow flexion

N: Radial nerve

Biceps Femoris:

O: LH - Ischial tuberosity, SH - linea aspera

I: Fibular head and lateral tibial condyle

A: LH - hip extension and knee flexion, SH - knee flexion

N: LH - Sciatic nerve, SH - Common fibular nerve

Triceps brachii

O: LH - Infraglenoid tubercel, M&LH Posterior surface of the humerus

I: Olecranon process of the ulna

A: LH - GH extension, adduction, elbow extension; SH - elbow extension

N: Radial nerve

Supraspinatus

O: Supraspinous fossa

I: Greater tubercle

A: GH abduction

N: Suprascapular nerve

Dorsal Interossei (A.N only)

A: Digit abduction and extension

N: Ulnar nerve

Palmar interossei (A.N only)

A: Digit adduction and extension

N: Ulnar nerve

Lumbricals 1&2 (A.N only)

A: MCP flexion, PIP and DIP extension

N: Median nerve

Upper Trapezius

O: Occiput and spinous process of C1-C6

I: Lateral third of the clavical and acromion process

A: STA elevation, upward rotation, weak retraction

N: Spinal accessory nerve

Lumbricals 3&4 (A.N only)

A: MCP flexion, PIP and DIP extension

N: Ulnar Nerve

Flexor Carpi Ulnaris

O: Medial epicondyle of the humerus

I: Pisiform and base of 5th metacarpal

A: Wrist flexion and ulnar deviation

N: Ulnar nerve

Teres Major

O: Inferior axillary border of the scapula above inferior angle

I: Medial lip of bicipital groove of humerus

A: GH extension, adduction, and IR

N: Lower subscapular nerve

Extensor Digiti Minimi (I.A.N only)

I: Base of distal phalanx of 5th digit

A: MCP, PIP, and DIP extension of 5th digit

N: Radial nerve

Infraspinatus

O: Infraspinous fossa

I: Greater tubercle

A: GH ER and horizontal abduction

N: Suprascapular nerve

Coracobrachialis

O: Coracoid process of scapula

I: Medial surface of humerus near midpoint

A: GH flexion and adduction

N: Musculocutaneous nerve

Biceps Brachii

O: LH - Supraglenoid tubercle, SH - Coracoid process of scapula

I: Radial Tuberosity

A: GH flexion, elbow flexion RU supination

N: Musculocutaneous nerve

Serratus Anterior

O: Lateral surface area of upper 8 rubs

I: Anterior surface of the vertebral border of the scapula

A: Scapular protraction and upward rotation

N: Long thoracic nerve

Abductor Pollicis Longus (I.A.N only)

I: Base of the first metacarpal

A: CMC Abduction and extension

N: Radial nerve

Brachialis

O: Anterior surface of distal half of the humerus

I: Ulnar tuberosity and coronoid process

A: Elbow flexion

N: Musculocutaneous nerve

Gluteus Maximus

O: Posterior coccyx, sacrum, and ilium

I: Posterior femur (distal to greater trochanter), IT band

A: Hip Extension and ER

N: Inferior gluteal nerve

Adductor Magnus

O: Pubis and Ischium

I: Linea aspera and adductor tubercle

A: Superior fibers: hip flexion and adduction; inferior fibers: hip extension and adduction

N: SF - Obturator, IF - sciatic

Psoas Major

O: Transverse process, vertebral bodies, and discs of T12-L5

I: Lesser trochanter

A: Hip flexion

N: Femoral nerve

Gluteus minimus

O: Lateral Ilium

I: Greater trochanter

A: hip abduction, flexion, and IR

N: Superior gluteal nerve

Semitendinosus

O: Ischial tuberosity

I: Pes anserine

A: Hip extension, knee flexion

N: Sciatic nerve

Rectus Femoris

O: AIIS

I: Tibial tuberosity

A: Hip flexion, knee extension

N: Femoral nerve

Gluteus Medius

O: Outer surface of the ilium

I: Greater trochanter

A: Anterior fibers: Hip flexion, IR, and abduction; Posterior fibers: Hip extension, ER, and abduction

N: Superior gluteal nerve

Piriformus

O: Anterior sacrum

I: Greater trochanter

A: Hip ER and abduction during flexion

N: nerve to the piriformis

Tensor Fascia Lutea (TFL)

O: ASIS

I: IT band to lateral tibial condyle

A: Hip flexion, IR, and abduction

N: Superior gluteal nerve

Sartorius:

O: ASIS

I: Pes Anserine

A: Hip flexion, ER, and abduction; knee flexion

N: Femoral nerve

Middle Trapezius

O: Spinous process of C7-T3

I: Acromion process and spine of scapula

A: Scapular retraction

N: Spinal accessory nerve

Teres Minor

O: Axillary border of the scapular

I: Greater tubercle

A: GH ER and horizontal abduction

N: axillary nerve

Subscapularis

O: Subscapular Fossa

I: Lesser tubercle

A: GH IR and adduction

N: Upper and lower subscapular nerve

Abductor Digiti Minimi (A.N only)

A: 5th CMC Abduction

N: Ulnar nerve

Latissimus Dorsi

O: Spinous process of C7-T5, posterior surface of iliac crest and sacrum, lower three ribs

I: floor of bicipital groove of humerus

A: GH extension, IR, and adduction

N: Thoracodorsal Nerve

Pectoralis Major (Sternal portion)

O: Sternum and costal cartilage of the upper 6 ribs

I: Lateral lip of the bicipital groove of humerus

A: GH Adduction, IR, horizontal adduction, and extension

N: Lateral and medial pectoral nerves

Extensor Carpi Radialis Longus

O: Lateral epicondyle of the humerus

I: Base of the 2nd metacarpal

A: Wrist extension and radial deviation

N: Radial nerve

Extensor Indicis (I.A.N only)

Iliacus

O: Iliac Fossa

I: Lesser trochanter

A: Hip flexion

N: Femoral Nerve

Pectineus

O: Pubis

I: Pectineal line of the femur

A: Hip flexion and adduction

N: Femoral Nerve

Adductor Longus

O: Pubis

I: Linea aspera

A: Hip flexion and adduction

N: Obturator nerve

Adductor Brevis

O: Pubis

I: Pectineal line and linea aspera

A: Hip flexion and adduction

N: Obturator nerve

Lower Trapezius

O: Spinous process of T4-T12

I: Base of spine of scapula

A: Scapular depression, upward rotation, retraction

N: Spinal accessory nerve

Extensor Carpi Radialis Brevis

O: Lateral epicondyle of the humerus

I: Base of third metacarpal

A: Wrist extension

N: Radial nerve

Extensor Carpi Ulnaris

O: Lateral epicondyle of humerus

I: base of fifth metacarpal

A: Wrist extension and ulnar deviation

N: Radial nerve

Pronator Quadratus:

O: Distal ¼ of ulna

I: Distal ¼ of radius

A: RU pronation

N: Median nerve

Levator Scapula

O: Transverse process of C1-C4

I: Vertebral border of scapula between superior angle and spine of scapula

A: Scapular elevation, ipsilateral side bending, and downward rotation

N: Dorsal scapular nerve

Pectoralis Major

O: Medial third of clavicle

I: Lateral lip of bicipital groove of humerus

A: GH adduction, flexion, IR, and horizontal adduction

Anterior Deltoid

O: Lateral third of the clavicle

I: Deltoid tuberosity

A: GH abduction, flexion, IR, and horizontal adduction

Pronator Teres

O: Medial epicondyle of humerus and coronoid process of ulna

I: Lateral aspect of radius at its midpoint

A: RU pronation, elbow flexion

N: Median Nerve

Flexor Hallucis Longus (I.A.N only)

I: Plantar surface on base of distal phalanx of great toe

A: Great toe flexion (assists in inversion and plantar flexion)

N: Tibial nerve

Flexor Digitorum Longus (I.A.N only)

I: Distal phalanx of the four lesser toes

A: 4 toes flexion (assists in inversion and plantarflexion)

N: Tibial nerve

Extensor Hallucis Longus (I.A.N only)

I: Dorsum of base of distal phalanx of great toe

A: Great toe extension (assists in inversion and dorsiflexion)

N: Deep fibular nerve

Extensor Digitorum Longus (I.A.N only)

I: Dorsum of distal phalanx of the four lesser toes

A: 4 toes extension (assists in dorsiflexion)

N: Deep Fibular Nerve