Kinesiology - Elbow

Elbow Joints

100

I am classified as diarthrodial; pivot (trochoid)

Articualtion: the head of the ulna with the unlawful notch on the radius 

Who am I?

Distal radioulnar joint 

200

I am classified as synarthroidal; ligamentous 

Articulation: the interosseous membrane exists between the shafts of the radius and ulna

Who am I?

Middle Radioulnar Joint 

300

I am classified as diarthroidal; pivot (trochoid) 

Articulation: the head of the radius with the radial notch on the ulna 

Who am I?

Proximal radioulnar joint 

400

I am structurally and functionally a hinge (ginglymus) joint with only one plane of motion

I am also diarthrodial 

Who am I?

humeroulnar joint

500

I structurally am a shallow ball and socket (enarthrodial) 

I am functionally restricted to work as a hinge next to the humeroulnar joint 

I am also diarthrodial 

Who am I?

humeroradial joint 

Ligaments

100

I bind inferior radial notch to the neck of the radius

I also reinforce the inferior elbow joint capsule and the proximal radioulnar joint 

Who am I? 

Quadrate ligament 

200

I am thin and cleaned with the anterior and posterior capsule, respectively

Who am I?

anterior and posterior ligaments 

300

I encircle the head of the radius (serve as a ligament AND an articular surface) 

I attache at its two ends to the radial notch (on the ulna) 

I am lined internally with hyaline cartilage 

I am also bathed with synovial fluid 

Who am I?

Annular ligament 

400

I am also know as the lateral collateral ligament

I have anterior, intermediate, and posterior fibers

I extend from the lateral epicondyle to the lateral side of the ulna and annular ligament 

I also limit excessive cubital varus stress

Who am I?

Radial Collateral Ligament 

500

I am also known as the medial collateral ligament 

I have anterior, intermediate, and posterior fibers

I extend from the medial epicondyle and annular ligament to the medial aspects of the coronoid process and olecranon

I also limit excessing cubital values stress

Who am I?

Ulnar Collateral Ligament 

Misc #1

100

the CAPitulum (humerus) articulates with the HEAD of the radius

Who am I?

humeroradial joint

200

I envelope both articulation at the elbow and proximal RU joint 

Who am I?

capsule (elbow)

300

The trochlea (humerus) articulates with the trochlear notch of the ulna

Who am I?

humeroulnar Joint 

400

If you do excessive extension movements at the elbow what could happen?

Fracture of the olecranon

Tearing of the capsule and/or anterior ligament 

Tearing of the brachial artery 

500

I limit anterior muscles of the arm and forearm, hardened by contraction, 

I limit tension of posterior capsule and ligament 

Who am I?

Active flexion of elbow 

Misc #2

100

I limit the olecranon hitting on the olecranon fossa 

I limit tension of capsule and anterior ligament 

I limit resistance of flexor muscles 

Who am I?

extension of elbow joint 

200

I am very weak and loose between the radius and ulna 

Who am I?

capsule of Distal RU joint 

300

I extend into the proximal RU joint

I line the annular ligament

I line the entire capsule at the elbow

Who am I?

synovium of the elbow 

400

My main function is rotational displacement of the distal end of the radius about the ulna (the ulna does not move in probation and supination)

Who am I?

function of distal RU joint 

500

I limit tension of posterior capsule and ligament 

I limit tension developed passively by triceps brachii

I limit anterior muscles of arm and forearm hitting against each other of much LESS importance because they can be flattened against eachtiehr more easily when relaxed

Who am I?

passive flexion of the elbow 

Misc #3

100

We prevent excessive medial and later movement of the radius and the ulna on the humerus 

Who are we?

Radial and Ulnar Collateral Ligaments 

200

My main function is rotation of the radial head within the fibrosseous ring made up of the radial notch and annular ligament

Pronation and supination functional movements 

What function am I associated with?

Proximal radioulnar joint (annular and quadrate ligaments)

300

I run from the base of the corned on the ulna to just distal to the radial tuberosity of the radius

Who am I? 

oblique cord 

400

I run from the distal edge of the ulnar notch of the radius to the depression between the ulnar styloid process and ulnar head. 

I bind the radius and ulna together

I serves as a DUAL articular surface for the head of the ulna and the carpals at the wrist joint

I also operate the radioulnar joint from the radoiocarpal joint so that their cavities are anatomically separate 

Who am I?

the articular disc of the distal radioulnar joint 

500

I am a tough fibrous membrane running the lengths of the radius and ulna 

I also provide force dissipation, shock absorption, serves as muscular attachments, and bind bones together

Who am I?

interosseous membrane