Term
| The elbow complex consist of what 2 items? |
|
Definition
| Elbow joint (hinge) and the radioulnar joint (pivot) |
|
|
Term
| What are the 3 bones of the elbow complex? |
|
Definition
|
|
Term
| Name the 4 joints comprising the elbow complex. |
|
Definition
| Radiohumeral joint, ulnohumeral joint, proximal radioulnar joint, distal radioulnar joint. |
|
|
Term
| At the radiohumeral joint, where does the surface where head of radius rotates during forearm flexion/extension? |
|
Definition
|
|
Term
| At the radiohumeral joint, which part of the humerus accepts head of radius? |
|
Definition
|
|
Term
| At the radiohumeral joint, where is the attachment for biceps, just below radial neck? |
|
Definition
|
|
Term
| At the ulnohumeral joint, which part of the ulna does humerus articulate? |
|
Definition
|
|
Term
| At the ulnohumeral joint, which part of the humerus accepts the coronoid process of ulna? |
|
Definition
|
|
Term
| At the ulnohumeral joint, which part of the humerus accepts olecranon process of ulna? |
|
Definition
|
|
Term
| At the radioulnar joint, because it's a pivot joint, which bone moves around which bone? |
|
Definition
|
|
Term
| At radioulnar joint, proximal end, the head of radius moves at where? |
|
Definition
|
|
Term
At radioulnar joint, distal end, ulnar moves at which part of the radius?
|
|
Definition
|
|
Term
| Interosseous membrane is a ligmentous band of connective tissue spanning radisus and ulna gap. what are it's 4 functions? |
|
Definition
| Distributes pressure between the two bones. Shock absorber, place for muscular attachment, prevents radius-ulna seperation. |
|
|
Term
| What is the 2 functions of the capsular ligament of the elbow? |
|
Definition
| Surrounds all 3 articulations at elbow and laterally fuses with the collateral ligament. |
|
|
Term
| What are the 3 distinct parts of teh collateral ligaments? |
|
Definition
| Anterior band, posterior band, transverse or oblique band. |
|
|
Term
| the ulnar or medial collateral ligament spans which joint? |
|
Definition
|
|
Term
| What is the function of the transverse or oblique band of the collateral ligament? |
|
Definition
| Stablize against valgus stress. |
|
|
Term
| What is the function of the oblique cord of the radius and ulna? |
|
Definition
| To assists interosseous membrane to prevent ulna-radial separation. |
|
|
Term
| Which tendon is harvested for ulnar collateral ligament reconstruction? |
|
Definition
| contralateral or ipsilateral forearm (i.e. palmaris longis), patella tendon, or cadeveric tendon graft. |
|
|
Term
| What type of surgery is the most significant developments in orthopedic and sports medicine for overhand athletes? |
|
Definition
| Ulnar collateral liament reconstruction. |
|
|
Term
| What are 2 special test for collateral ligament stability? |
|
Definition
| the elbow valgus and varus stress test. |
|
|
Term
| What are 2 positive test for the elbow valgus stress test? |
|
Definition
-Gaping on medial aspect.
-Indicates sprained medial collateral ligaments and possible joint instability. |
|
|
Term
What are 2 positive test for the elbow varus stress test?
|
|
Definition
"Gaping" on lateral aspect
Indicates sprained lateral collateral ligaments and possible joint instability. |
|
|
Term
| Of the elbow joint, which ligament connects inferior border of lateral epicondyle to the annular ligament? |
|
Definition
| Radial or lateral collateral ligament |
|
|
Term
| What is the function of annular ligament of the elbow joint? |
|
Definition
| Holds head of radius in the radial notch of the ulna. |
|
|
Term
| At the elbow joint, which ligament connects lateral epicondyle to ulna? |
|
Definition
| Lateral ulnar collateral ligament |
|
|
Term
| What is the function of the lateral ulnar collateral ligament? |
|
Definition
| Stabilize against varus stress |
|
|
Term
| At the elbow joint, what is the muscles responsible for flexion? |
|
Definition
| Biceps brachii, brachialis, brachioradialis |
|
|
Term
| Biceps brachii: Origin, Insertion, Action, Reversed origin-insertion action, nerve? |
|
Definition
Origin: Long Head-supraglenoid tubercle through labrum, short heard - coracoid process
Insertion: Radial tuberosity and bicipital aponeurosis
Action: Flexes and supinates forearm at the elbow.
Reversed origin-insertion action: Both heads flex arm at shoulder
Nerve: Musculotaneous |
|
|
Term
Brachialis: Origin, Insertion, Action, Reversed origin-insertion action, nerve?
|
|
Definition
Origin: Middle anterior shaft of humerus
Insertion: Ulnar tuberosity and coronoid process of ulna
Action: Flexion of elbow
Nerve: Musculotaneous (Additional branch from radial nerve) |
|
|
Term
| Brachioradialis: Origin, Insertion, Action, nerve? |
|
Definition
Origin: Proximal lateral supracondylar ridge of humerus
Insertion: Radial syloid process
Action: Elbow flexor, pronates and supinates to mid-position
Nerve: Radial
|
|
|
Term
| At the elbow joint, what are the muscles responsible for extension. |
|
Definition
| Triceps brachii, anconeus |
|
|
Term
Triceps brachii: Origin, Insertion, Action, nerve?
|
|
Definition
Origin: Long head-infraglenoid tubercle, lateral head-proximal 1/3 of posterolateral aspect of humerus, medial head-distal 2/3 posterolateral humerus
Insertion: Olecranon process of ulna
Action: All heads extend elbow. Long Head extends, horizontally abducts, and adducts shoulder
Nerve: Radial |
|
|
Term
| Anconeus: Origin, Insertion, Action, nerve? |
|
Definition
Origin: Posterior lateral epicondyle.
Insertion: Lateral olecranon process
Action: Extension
Nerve: Radial |
|
|
Term
| At the radioulnar joing, which muscles is responsible for supination? |
|
Definition
| Bicep brachii, supinator, brachioradialis (to neutral) |
|
|
Term
| At the radioulnar joint, which muscles is responsible for pronation? |
|
Definition
| Pronator teres, pronator quadratus, brachioradialis (to neutral) |
|
|
