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Chapter 10 Clincal Kinesiology and anatomy Lynn Lippert
Chapter 10 The elbow joint
36
Health Care
Undergraduate 1
10/20/2010

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Cards

Term
When looking at the arm in anatomical position the head of the ulna is ______ and the head of the radius is_____.
Definition

Head of the ulna is distal

head of the radius is proximal

Term
The elbow complex is made up of ___ bones,  ____ ligaments, ___ Joints, and  ____capsule.
Definition
The elbow complex is made up of 3 bones,  3 ligaments, 2 Joints, and  1 capsule.
Term
On the humerus the trochlea articulates with the trochlear notch of the ulna and the capitulum articulates with the head of the radius this is called  _______.
Definition
the elbow joint.
Term
The movements of the elbow joint are
Definition
Flexion/extension
Term
The articulation of the radius and ulna is known as the __________ Joint.  It has a _____________ and a _____________ articulation.
Definition
The articulation of the radius and ulna is known as the radioulnar Joint.  It has a Proximal and a distal articulation.
Term
The head of the radius pivots within the radial notch of the ulna forming the ___________ radioulnar joint.
Definition
The head of the radius pivots within the radial notch of the ulna forming the proximal radioulnar joint.
Term
The ulnar notch of the radius rotating around the head of the ulna forms the _______radioulnar joint.
Definition
distal
Term
T or F   The distal and proximal radioulnar joints are considered one joint.
Definition
T
Term
The proximal radioulnar joint is a _____ joint.  It is ________.  It allows for _____ and _____.
Definition

Pivot

Uniaxial

Supination and pronation

Term
Measured from neutral or fundamental position the radioulnar joint  allows ____ of supination and ____ of pronation.
Definition

90 degrees of supination

80 degrees of pronation

Term
when supination and pronation occur which bones move?
Definition
The radius rotates around the ulna.  The ulna does not move.
Term
In order for a muscle to supinate or pronate the forearm it must attach on the _____.
Definition
Radius
Term
Carrying angle occurs because _______.
Definition

The distal end of the humerus is not level.  The carrying angles is the longitudinal axes of the humerus and forearm forming an angle.  

 

The carrying angle tends to be greater in women.  5 degrees in men and 10 to 15 degrees in women. 

 

The angle is quite functional in getting your hand to your mouth.

Term
The capitulum articulates with the _____.
Definition
Radius
Term
What are the three ligaments of the elbow?
Definition

Medial collateral ligament

Lateral collateral ligament

annular ligament

 

anatomy.tv has a great picture of these   do a search on elbow joint.

Term
The annular ligament attaches both anteriorly and posteriorly to the radial notch of the ulna.  It encompasses the _______ .
Definition
The head of the radius and holds the head of the radius against the ulna in the radial notch..
Term
Volksmann's ischemic contracture is the result of ischemic necrosis of the forearm muscles caused by trauma to the ______ artery.
Definition
Brachial
Term
Nursmaids elbow aka pulled elbow is seen in young children when there is a sudden strong traction force on the child's arm.  This results in the radial head subluxing out from under the _______  ________.
Definition
annular ligament
Term
Supracondylar fractures are one of the most common in _________
Definition
children   and are caused by falling on an outstretched hand.   A potential danger of this type of fracture is damage to the brachial artery which could lead to Volksmann's ischemic contracture.
Term
What are the muscles of elbow flexion?
Definition

Biceps Brachii

Brachialis

Brachioradialis

Term
What are the muscles of elbow extension?
Definition

Triceps

anconeus assists

Term
What muscles pronate the elbow/
Definition

Pronator Teres

Pronator quadratus

Term
What muscles supinate the forearm?
Definition

Biceps

Supinator

Term
What two muscles form a force couple to move the forearm from a pronated position to a supinated position?
Definition

Biceps Brachii

Supinator

Term
When a muscle has stretched over all of its joints as far as possible it  has  become ___________.
Definition
passively insufficient
Term
When a muscles has contracted over all of its joints as far as possible it  has  become ___________.
Definition
actively insufficient
Term
What bony landmarks on the Ulna determine if it is a right or left ulna?
Definition

The trochlear notch faces anterior

the radial notch faces laterally

styloid process is on the medial side

Term
There are two mucles of the elbow that cross two joints.  what muscles are they?
Definition

Biceps Brachii

Triceps Brachii

Term
There are two muscles of the elbow that do not attach to the humerus.  What are they?
Definition

Biceps Brachii

pronator quadratus

Term
The musculocutaneous nerve from spinal segments C5,C6 innervates what muscles of the elbow?
Definition

Brachialis C5, C6

Biceps Brachii C5, C6

Term

The Radial nerve C6, C7, C8, T1 innervates what muscles of the elbow joint?

 

Definition

Brachiioradialis C5, C6

Triceps C6, C7, C8

Anconeus C7, C8, T1

Supinator C8, T1

 

Term
The Median nerve C6,C7,C8,T1 innervates what muscles of the elbow?
Definition

Pronator Teres C6, C7

Pronator Quadratus C8, T1

Term
At the distal end of the humerus the trochlea is lower than the capitulum.  When the arm is in anatomical position this creates an angle called ________.
Definition
Carrying angle.  It tends to be greater in women.  Normal is 5 degrees in males and 10 to 15 degrees in females.
Term

The elbow flexors are

Brachialis

Birceps brachii

Brachioradialis

 

Definition

the elbow extensors are

 

triceps

anconeus

Term

the forearm supinators are:

 

Biceps brachii muscle

supinator muscle

Definition

the forearm pronators are:

 

Pronator teres

Pronator quadratus

Term

There are 8 muscles of the shoulder joint. 

 

2 are innervated by the musculocutaneous nerve

2 are innervated by the Median nerve

4 are innervated by the Radial nerve

Definition

Biceps Brachii - Musculocutaneous nerve C5,C6

Brachialis - Musculocutaneous nerve C5, C6


Pronator teres - Median Nerve C6, C7

Pronator Quadratus - Median Nerve C8, T1


Anconeus - Radial nerve C7, C8, T1

supinator - Radial nerve C8, T1

Triceps Brachii - radial nerve C6,C7,C8

Brachioradialis - C5, C6

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