ch 6 pt 2

exam 2- this is on elbow and forearm

what movements do the biceps brachii do

elbow flexion, forearm supination

(ex: Combing your hair, drinking a beverage, washing your face)

bicipital aponeurosis

a broad, flat, fan-shaped band of tough connective tissue

it helps dissipate tension and assists in the biceps' dual roles of flexing the elbow and supinating (rotating) the forearm.

brachialis

flexor of elbow joint

ex: brushing teeth

brachioradialis

flexion of elbow joint

Assists to rotate forearm to neutral from supinated or pronated position 

ex: drinking a beverage

what are the extensors of the elbow

triceps brachii

anconeus

ex: throwing a fishing

triceps brachii makeup and movements

3 bellies

medial and lateral heads» moderate extension, (ex: placing book on high shelf)

long head» force for high resistance extension (ex: push up)

they all do extension

ex:  Putting something on a counter, w/c mobility 

anconeus

weak elbow extensor

ex: casting fishing line, throwing a ball

what are the primary rotators of the forearm

biceps brachii

supinator

pronator teres

pronator quadratus

supinator muscle

does forearm supination

ex: using a screwdriver, opening a jar

prontator teres

• pronates the forearm

ex: pouring a cup of coffee, or knitting

pronator quadratus

active during all forearm pronation,

pronates also w elbow flexed

ex: Shaving or putting on makeup 

what is an example of purposeful movements for elbow extension

triceps brachii contributes to elbow extension during mobility and posture reactions like standing up from sitting in a chair.

what is an example of purposeful movement for supination

The biceps brachii contributes to supination during leisure activities like playing the drums

what is an example for purposeful movement for pronation

what are some movements that the proximal radioulnar joint functional movements

: opening a medicine bottle or jar of peanut butter

what is an example of functional forearm rotation

turning a doorknob with the elbow against the side of the body

• Supinator recruited first when supinating forearm with shoulder flexed and elbow extended

Example: changing a light bulb

true or false the elbow joint allows scapular movements to compensate for a loss of active elbow extension to perform transfers

true

what is cubital tunnel syndrome

• Numbness and tingling in ring and small fingers

• Increased pressure and tension on the ulnar nerve with elbow in a flexed position

-

• happens when the ulnar nerve compressed, stretched, or irritated as it passes through the inside of the elbow.

• Common causes include prolonged elbow flexion, leaning on the elbow, direct trauma, or underlying conditions like arthritis or bone spurs

ulnar collateral ligament (UCL) injury

• Repetitive forceful elongation of the UCL may lead to plastic deformation

• Instability and loss of velocity for throwing athletes

what is flexion contracture, and extension contracture

flexion contracture» JOINT STUCK IN BENT POSITION, Limited active and passive extension aka

Soft tissue restrictions

extension contracture» JOINT STUCK IN EXTENDED Position of extension with limited flexion

Significantly impact function

(extension comes w a bit more difficulties)

• Difficulty feeding themselves

• Difficulty washing their hair

• Difficulty lifting and carrying

• Difficulty using an ATM

what is lateral epicondylitis also known as

tennis elbow

what is medial epicondylitis also known as

golfers elbow