unc msk course day 2 lab xr unknowns (for self study)

UNC MSK Course Day 2 Lab XR

UNKNOWNS

(for self study)

Anatomy, names?

Acromion

AC joint

Gr. Tuberosity

Coracoid

Glenoid

Anatomy?

Axillary view

AC Joint

Glenoid

Acromion

Pathology?

Bilateral Clavicle fx

Bilateral Clavicle fx

Pathology?

Anterior glenohumeral (shoulder) dislocation.

How do we know it is anterior?

Anterior glenohumeral (shoulder) dislocation.

The fact that we see the humeral head in profile tells us it is externally rotated (it would be internally rotated if the patient was dislocated posteriorly.)

An internally rotated humeral head looks like a “light bulb”.

Anterior glenohumeral (shoulder) dislocation.

The fact that we see the humeral head in profile tells us it is externally rotated (it would be internally rotated if the patient was dislocated posteriorly.)

An internally rotated humeral head looks like a “light bulb”.

Anterior glenohumeral (shoulder) dislocation.

We can also obtain an “axillary view” and see that the humeral head is anterior to the glenoid.

Anatomy?

Anatomy?

Trapezius

Acromion

Supraspinatus

Supspinatus tendon

Glenoid

Subscapularis

Deltoid

Pathology?

Rotator Cuff tear

(tendon should be black)

Anatomy?

Anatomy?

Olecranon/coronoid fossa

Medial epicondyle

Capitellum

Trochlea

Radial Head

Radial Tuberosity

Anatomy?

Anatomy?

Olecranon/coronoid fossae

Radial head

Coronoid process

Olecranon

Pathology?

Supracondylar fracture of the humerus in a child

Pathology?

Posterior dislocation of elbow

Pathology?

Proximal ulna fracture

With fracture subluxation of radial head

This combination of injuries is known as a “Monteggia fracture.”

Pathology?

Elbow fracture dislocation

Fracture of the olecranon with anterior dislocation of radius and ulna.

Air in soft tissues indicates that it is an “open” fracture.

Pathology?

Fracture of the radius and ulna

Pathology?

Distal radial “buckle” or “torus” fracture.

The bone has “crumpled” rather than broken.

Distal radial “buckle” or “torus” fracture.

The bone has “crumpled” rather than broken.

Anatomy?

Anatomy?

Metacarpal head

Hamate

Pisiform

Triquetrium

Ulnar Syloid

Lunate

Sesamoid bones

Capitate

Scaphoid

Radial Syloid

Anatomy?

Anatomy?

Lunate

Anatomy?

Scaphoid

Anatomy?

Capitate

Anatomy?

Pisiform

Pathology?

Scaphoid Fracture

Pathology?

Scapholunate dissociation

The scapholunate ligaments are torn allowing separation of the two bones like a gap between the front teeth (“Terry Thomas” or “Letterman’s sign”).

The spacing between all of the carpal bones should be the same.

Pathology?

Hairline fracture 3rd metacarpal shaft

Pathology?

Pathology?

Unstable elbow dislocating upon extension.

Note: fracture fragment from coronoid process

Foggy Alaskan valley near Hubbard glacier