Spine
Shoulder Mechanics
Elbow, Wrist, and Hand
Common Injuries
Muscle Actions
100

The cervical spine consists of this many vertebrae.

What is 7?

100

This joint is the only true joint connecting the upper limb to the axial skeleton.

What is the sterno-clavicular joint?

100

The bony projection on the distal ulna and radius are both known by this anatomical term.

What is the styloid process?

100

This type of shoulder injury occurs when the acromion and clavicle separate.

What is an AC joint separation?

100

This muscle group, with “I Like Spaghetti” as a mnemonic, primarily aids in spinal extension and stability.

What are the erector spinae muscles?

200

The spine includes this many thoracic vertebrae, each connected to a rib.

What is 12?

200

The glenohumeral joint performs this type of motion with the arm moving in a circular path.

What is circumduction?

200

This muscle in the forearm is responsible for wrist flexion and originates from the medial epicondyle of the humerus.

What is the flexor carpi radialis?

200

Commonly known as a slipped disc, this injury often compresses spinal nerves.

What is a herniated disc?

200

This muscle, acting on the shoulder, is essential for abduction and is one of the rotator cuff muscles.

What is the supraspinatus?

300

This type of joint allows for head rotation at the atlanto-axial junction.

What is a pivot joint?

300

The scapulo-thoracic joint is not a true anatomical joint but enables these types of shoulder movements.

What are elevation, depression, protraction, retraction, and rotation?

300

This ligament keeps the head of the radius in place, allowing for forearm rotation.

What is the annular ligament?

300

This common throwing injury involves tearing of the ulnar collateral ligament in the elbow.

What is a Tommy John injury?

300

This muscle flexes the elbow and supinates the forearm and has origins on the scapula.

What is the biceps brachii?

400

This structure is the core of an intervertebral disc, providing flexibility and shock absorption.

What is the nucleus pulposus?

400

The glenoid labrum is a structure that enhances the shoulder joint in this way.

What is increasing stability?

400

These two carpal bones form the proximal row and are situated on the ulnar side of the wrist.

What are the triquetrum and pisiform?

400

In carpal tunnel syndrome, this nerve becomes compressed.

What is the median nerve?

400

This abdominal muscle, with fibers running diagonally, helps with trunk rotation to the opposite side and lateral flexion.

What is the external oblique?

500

Lateral spinal curvature resulting in an abnormal curve is known as this condition.

What is scoliosis?

500

A common shoulder condition, this syndrome is caused by compression of rotator cuff tendons in the subacromial space.

What is shoulder impingement syndrome?

500

This muscle, located in the forearm, is responsible for thumb flexion at the interphalangeal joint.

What is the flexor pollicis longus?

500

This condition results in an excessive inward curve of the lumbar spine.

What is lordosis?

500

This muscle in the forearm is involved in pronation and originates from the medial epicondyle of the humerus.

What is the pronator teres?

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