sign in sign up
<<
Home , Brachioradialis, Cubital fossa, Head of radius, Radial fossa, Trochlea of humerus

Two Minute History M1 - Anatomy Dissection: • 300 B.C and Cubital Alexandrian Egypt: King Ptolemy I, its ok to dissect cadavers of executed, mummies etc… •Herophilus “Father of Anatomy” accused by a rival of DG Simpson, Ph.D. dissecting 600 criminals…..live criminals VCU Department of Anatomy •1300 AD Europe Pope Boniface VIII edict to stop dissection to reduce the flow of bodies “parted out and boiled” from the crusades. Unclear if this is broad ban or very narrow.

1 2

Dissection: Dissection: •1540 parliament passes “The United Company of Barbers and •1700’s with the expansion of medical Surgeons, dissect 4-6 executed schools cadavers are used as tuition criminals/yr (not enough even then) •Competition is very high and medical •1600’s Britain. The executed are schools actively advertise that training includes dissections etc.. dissected in public as punishment • 1628 William Harvey •1828 London had 10 full time (cardiovascular fame). Autopsy & 200 part time body snatchers (“seasonal work” at 312 bodies/yr) of live and dead…. Medicine expands and shortages develop •Inventions to foil grave robbers Harvey dissects father and sister •1828 Robert Knox….and the rest • 1740’s Lots of private medical is amazing history. schools competing for students, William Hogarth The Reward of Cruelty 3 4 market forces develop 1750-1751

Dissection: •Burke was hanged: 25,000 watched. Hare was granted immunity as crowd called “Burke Hare”

•1828, knock on the •Burke dissected: 30,000 came to see the open lab door, Knox’s assistant purchases a cadaver •Knox hung in effigy: •William Hare and wife had a death in their boarding house Parliament asks the question can and used the body to pay debt owed on the room we teach from models/drawings ?

•William Burke and William Hare realize the financial potential Burke’s death mask •Drunk is smothered in the house and sold + 13 others (too lazy or too dumb to dig the already newly dead instead of killing? )

•Mary Patterson……

5 6 Upper Stiff: The curious lives of human cadavers Extremity by Mary Roach, 2003

7 8

Upper Extremity Osteology: Anterior Surface Arm Head •Anterior Compartment Anatomical •Posterior Compartment Greater & Lessor tubercle Intertubercular goove Surgical neck •Anterior Compartment Trochlea & Capitulm •Posterior Compartment Coronoid &

9 Medial & Lateral epicondyles 10

Osteology:Humerus Anterior Posterior Surface Posterior Head Anatomical neck Surgical neck Spiral groove fossa Lateral & Medial Epicondyle 11 12 Osteology: Forearm Osteology: Major weight bearing at the joint. Major weight bearing bone of the wrist •Proximal the articulates with , allows supination and pronation •Proximal head articulates with • articulates with the capitulum (“little head”) of , mediates the humerus. extension •Proximal head also articulates •At extension, olecranon fits into laterally with radial notch of ulna of humerus •Head and neck are distal

13 14

Interosseous membrane

Transmits forces from ulna (proximal) to radius (distal). Very tough connective tissue. Colles’ fracture, a Landmark for several fracture of the other structures, stay distal radius tuned. with forearm

in extension http://www.eatonhand.com/hw/hw020.htm http://www.physioroom.com/injuries/arm/colles_fracture_full.shtml http://orthoinfo.aaos.org/fact/thr_report.cfm?thread_id=150&topcategory=Arm 15 16

Elbow

•Humeroulnar articulation Weight bearing joint

•Radial head Articulation Articulation articulates with of ulna and of radius and trochlea capitulum capitulum & ulna •Allows supination & pronation

17 18 Articular Capsule Radial Head Subluxation: Nurse Maid’s Syndrome

Dislocation of the head of the radius from the annular ligament

Radial, ulnar & annular ligaments.

19 http://www.tcusportsmedicine.com/elbow.htm20

C5 Upper Extremity Superior Trunk Lateral Cord Musculocutaneous Arm C6 •Anterior Compartment Terminal Median •Posterior Compartment C7 Middle Trunk of the Anterior Division Cubital Fossa C8 Forearm Inferior Trunk Medial Cord •Anterior Compartment T1 •Posterior Compartment Robert Taylor.. Drinks... Cold.... Beer 21 22

Anterior Compartment Anterior Compartment Superficial •Bicep Long Head •Bicep Long Head Origin: •Bicep Short Head Actions • Flex elbow •Supinator of forearm • Flex, adduct & medially rotate

23 24 Anterior Compartment •Bicep Long Head Insertion: & Aponeurosis

25 26

Anterior Compartment Anterior Compartment •Bicep Short Head •Bicep Short Head Origin: Insertion: Radial Tuberosity & Aponeurosis

27 28

Coracobrachialis DeepSuperficial Anterior Anterior Compartment Compartment Origin: Coracoid process Insertion: Medial humerus

•Coracobrachialis Adducts & Flexes shoulder

•Brachialis Flexes elbow

29 Adducts & Flexes shoulder30 Brachialis

Coracobrachialis Origin: Shaft of humerus Insertion: Ulnar tuberosity

Brachialis

Flexes elbow 31 32

C5 Upper Extremity Superior Trunk Terminal Nerves of the Posterior Division Arm C6 Axillary Nerve •Anterior Compartment Posterior division •Posterior Compartment C7 Middle Trunk Cubital Fossa C8 Forearm Inferior Trunk •Anterior Compartment T1 •Posterior Compartment Robert Taylor. Drinks... Cold….. Beer

33 34

Posterior Compartment Posterior Compartment

•-3 Heads •Triceps-Long Head Long, Medial, & Lateral Origin: Insertion: Olecranon process • (Anconeus)

35 36 Posterior Compartment Posterior Compartment •Triceps-Lateral Head •Triceps-Medial Head

Origin: posterior humerus Origin: posterior humerus lateral to spiral groove below the spiral groove Insertion: Olecranon process Insertion: Olecranon process

37 38

Angiology Axillary

Tricepts Actions •Supreme Thoracic •Thoracoacromial Pectoral •Long head extends Deltoid Clavicular and adducts shoulder Acromial •As a group it is the •Lateral Thoracic extensor of elbow •Anterior Humeral •Posterior Humeral •Subscapular Circumflex scapular Thoracodorsal 39 40

Angiology Neurovascular Relationships Axillary

Brachial Profunda Brachia

Anterior Posterior Compartment Compartment

41 42 Surgical Neck Fracture Mid Shaft Fracture Potential damage to the Potential profunda artery & radial damage to the nerve anterior and posterior circumflex

43 44

Upper Extremity Cubital Fossa Arm Borders: •Anterior Compartment •Line connecting •Posterior Compartment medial & lateral epicondyles of humerus Cubital Fossa Pronator teres •Medial: Pronator Forearm teres •Anterior Compartment •Lateral: Brachioradialis •Posterior Compartment

45 46

Cubital Fossa: BAN Clinical Considerations

•Cephalic & Basilic Drain dorsum of & used for B= tendon A= N= •Brachial Artery Anomalous superficial ulnar or radial branch

47 48 Name 18 Muscle Attachments 10 Minute Break

49 50