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13 Cards in this Set
- Front
- Back
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Ulnohumeral joint. What type of joint? What articulates? What actions? Closed pack position? |
1. Synovial Hinge joint. 2. Trochlea of humerus w/ coronoid process of ulna 3. Flexion/extension 4. full elbow extension |
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Radiohumeral Joint. What type of joint? What articulates? What actions? Closed pack position? |
1. Synovial Hinge Joint 2. Capitillum of humerus and head of radius 3. Flexion/Extension 4. 80 degree elbow flexion and midprone position |
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Superior Radioulnar J. What type of joint? What articulates What actions? Closed pack position? |
1. Synovial pivot joint. 2. head of the radius and radial fossa of ulna 3. pronation and supination 4. mid prone position |
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What happens during pronation? |
Radius crosses over the ulna |
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Carrying Angle: What is the carrying angle? Do Females/Males have a greater CA? Ergonomic Importance Clinical Importance |
1. The angulation of the trochlea of humerus and the ulnohumeral joint form the "carrying angle" 2. Women 15-25 men 10-15 3. when walking, carrying or swinging objects, this angle avoids contact between the hand/object and lower limb. 4. excessive carrying angle may increase risk of non traumatic ulnar neuropathy |
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Supracondylar fracture of the humerus Who is this most common in? Mechanism of injury? Complications? |
1. 90% of injuries happen to children of less than 10 years of age 2. most common- falling on outstretched arm, less common- direct impact to the elbow 3. Malunion> cubitus varus or gunstock deformity Damage to brachial artery>Ischaemic Contracture (volkmann contracture) damage to ulnar, median or radial nerve |
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Olecranon Bursitis Where is this located? What happens during this trauma? What causes this? What clinical features does it cause? Treatment? |
1. Between the olecranon process and the skin 2. Inflammation of the bursa (fluid accumulation) 3. trauma, prolonged pressure, infection, gout/rheumatoid arthritis 4. pain caused by direct pressure/flexing of elbow joint 5. drainage, treatment of underlying condition |
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Stability of elbow Joint. -Static |
1. Articulating surfaces 2. joint capsule 3. Ligaments (3) |
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Stability of the elbow Joint. -Dynamic |
1. Flexor/pronator muscles originating from medial epicondyle 2. Extensor/Supinator muscles originating from medial epicondyle |
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Elbow Ligaments What are they and what do they resist? When are they stretched? |
Ulnar Collateral Ligament -resists valgus stress -taut during elbow flexion/extension Annular Ligament (starts lateral E. wraps around Radius towards ulna) -holds radius in elbow joint during pronation and supination Radial Collateral Ligament -Resists a varus stress - Taut during elbow flexion |
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Posterior Elbow Dislocation Mechanism of injury? Clinical features? What are the two types of injuries? What are their differences? Their individual treatments? |
1. falling on an outstretched hand - car accident 2. Obvious deformity/extreme pain 3. Simple dislocation & Complete/Severe dislocation 4. Simple- no major bone injuries Complete-major bone, nerve, blood vessel injuries 5. Simple- elbow reduction/splint -- PT Complete- surgery |
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Pulled Elbow (Nursemaid's Elbow) Clinical features? Who does this commonly happen to and why? Treatment? |
1. Subluxation/Dislocation of radius from annular ligament 2. children, annular ligament is not as thick/tight 3. reduction by doctor |
