Elbow Flashcards

(55 cards)

1
Q

Humeroulnar responsible for?

A

15* carrying angle

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2
Q

Open pack Humeroulnar

A

70* flexion and 10* supination

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3
Q

Closed pack Humeroulnar

A

Max flexion

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4
Q

Humeroradial open pack

A

Extension and supination

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5
Q

Humeroradial closed pack

A

90* flexion and 5* supination

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6
Q

Radioulnar open pack

A

70* flexion and 35* supination

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7
Q

Radioulnar closed pack

A

5* supination

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8
Q

UCL stability against ____ forces between ______ & ______ degrees flexion

A

Valgus between 20-130 degrees

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9
Q

Anterior bundle of UCL stability at what angles of elbow flexion?

A

30, 60, 90 degrees

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10
Q

Posterior oblique bundle of UCL is taught when?

A

After 60* of flexion

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11
Q

Lateral ligament complex general function

A

Maintains stability of humeral joints when in supination

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12
Q

RCL function

A

Stabilizes varus forces from extension thru 90* flexion

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13
Q

Ulnar nerve tension test (ULTT 3 - 6 actions) & nerve roots

A

Shoulder girdle depression, shoulder abduction, shoulder external rotation, wrist and finger extension, elbow flexion, wrist pronation

C8-T1

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14
Q

Median nerve tension test (ULTT 1 - 7 actions) & nerve roots

A

C5-T1

Shoulder girdle depression, shoulder abduction, shoulder ER, supination, wrist and finger extension, elbow extension, cervical lateral flexion

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15
Q

Median nerve passes thru what muscle?

A

Pronator teres

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16
Q

Radial Nerve tension test (ULTT 2 - 7 actions) & nerve roots

A

C5-T1

Shoulder girdle depression, elbow extension, shoulder IR, pronation, wrist and finger flexion

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17
Q

Radial nerve branches into what 3 nerves?

A

Posterior interosseous nerve, deep and superficial branches of radial N.

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18
Q

What muscles originate at the common flexor tendon?

A

Flexor carpi radialis
Flexor carpi ulnaris
Palmaris longus
Flexor digitorum superficialis

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19
Q

What muscles originate at the common extensor tendon?

A

Extensor carpi radialis longus and brevis
Extensor digitorum
Extensor carp ulnaris
Extensor digiti minimi

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20
Q

How to test Brachialis

A

In pronation

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21
Q

How to test biceps

A

Supinated

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22
Q

Hope to test Brachioradialis

A

Neural hand/forearm position

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23
Q

Normal flexion ROM

24
Q

Normal extension ROM

25
Normal supination ROM
85*
26
Normal supination ROM
85*
27
Normal supination ROM
85*
28
Normal pronation ROM
75*
29
Tests for lateral epicondylopathy
Cozen’s (forearm pronated, resisted radial deviation and wrist extension) Mill’s (forearm pronated, passively move wrist into flexion and elbow into extension) Maudsley (resisted extension of 3rd digit/middle finger)
30
Medial epicondylopathy - aka
Golfer’s elbow
31
lateral epicondylopathy - aka
Tennis elbow
32
Medial epicondylopathy tests
Golfer’s elbow test - while palpating medial epicondyle, possibly move elbow, wrist, and fingers into full extension **active test is resisting elbow and wrist flexion
33
UCL/MCL sprain/tear is common in?
Overhead throwing athletes - esp. during late cocking phase/early throwing phase (shoulder abducted and moving into ext. rot creating VALGUS force)
34
What band of UCL/MCL is typically injured?
Anterior band (strongest one?!)
35
Special tests for UCL/MCL sprain
Valgus stress test - supinated forearm, elbow at 30*, apply Valgus force Moving Valgus stress test - shoulder in 90* abduction, 100-120* elbow flexion, elbow quickly extended (fully)
36
LCL complex sprain mechanism
Typically due to trauma and forceful varus
37
Mechanism of injury for Olecranon bursitis
High repetition activities/overuse, direct trauma, or constant weight bearing through elbows
38
Osteochrondritis dissecans capitellum description and MOI
Inflammatory condition causing fragmentation or necrosis of cartilage and bone of capitellum Frequent compressive forces at radiohumeral joint
39
Special tests for osteochrondritis dissecans capitellum
Valgus overload test - Valgus stress while moving into extension (no particular elbow flexion degree/ROM listed) Radiohumeral compressive test - full ext of elbow. W/ pronation and supination compressive force
40
Special tests for osteochrondritis dissecans capitellum
Valgus overload test - Valgus stress while moving elbow into extension (no specific range mentioned for elbow flexion) Radiohumeral compressive test - full extension of elbow w/ pronation and supination compressive force
41
What can cause median nerve neuropathy? (4 dx)
Anterior interosseous syndrome, Pronator teres syndrome, carpal tunnel syndrome Ligament of Struthers - runs from supracondylar process to head of Pronator teres, Median nerve passes underneath
42
Median nerve compression can lead to the motor loss of what? (9)
1)Pronator teres, 2)flexor carpi radialis, 3)flexor digitorum superficialis, 4)flexor pollicis longus 5)Lateral half of flexor digitorum profundus 6)Pronator quadratus, 7)Palmaris longus 8)lateral 2 lumbricals 9)thenar eminence
43
Sensory loss accompanied by medial nerve compression
Palmar aspect of lateral hand Dorsal aspect of distal ring finger Middle and index fingers
44
Functional loss accompanied by medial nerve compression (7)
Pronation Wrist flexion Radial deviation Opposition of thumb Thumb adduction Weak overall grip No pinch grip
45
Functional loss associated w/ medial nerve compression
Pronation Radial deviation Wrist flexion Thumb adduction AND opposition Weak overall grip No pinch grip
46
Anterior interosseous syndrome - signs/tests
OK sign - unable to flex distal phalanx of index and thumb Sign of benediction - unable to flex 1st 3 digits
47
(T/F) There is both sensory and motor loss w/ Anterior interosseous syndrome
False - only motor loss in: flexor pollicis longus, lateral half of flexor digitorum profundus, Pronator quadratus, thenar eminence, lateral 2 lumbricals
48
Pronator teres syndrome - how to differentiate from anterior interosseous syndrome
There IS sensory loss w/ Pronator teres syndrome Also - forearm heaviness and potential weakness
49
Pain production and one other test for Pronator teres syndrome
Resist: Pronation, elbow flexion, and wrist flexion at the same time Supination Finger flexion Handshake test - resisted pronation @ 90* of elbow flexion
50
4 possible dx for Radial nerve neuropathy
High radial nerve palsy Posterior interosseous syndrome Radial tunnel syndrome Superficial radial nerve palsy
51
Potential motor loss w/ radial neuropathy (11)
Anconeous Brachioradialis Extensor carpi radialis longus + brevis Extensor digitorum Extensor pollicis longus + brevis Abductor pollicis longus Extensor carpi ulnaris Extensor indicis Extensor digit minimi
52
Motor loss associated with radial neuropathy
Extensor pollicis longus + brevis Extensor indicis Extensor carpi radialis (longus and brevis) and ulnaris Extensor digitorum Anconeous Brachioradialis Abductor pollicis longus and brevis Extensor digiti minimi
53
Radial nerve sensory distribution
Lateral 2/3 of dorsal hand (full length of thumb, up to head of proximal phalanx of digits 2 & 3)
54
High radial nerve compression typically due to? Loss of?
Compression at lateral head of triceps due to humerus fx at spiral groove Accompanied by loss of wrist and finger extension as well as potential weakness at triceps
55
Posterior interosseous syndrome accompanied by what motor loss? (Think functional) What is spared and why? Pain?
Inability to extend digits at MCP and IP, loss of abduction at thumb Wrist extension spared due to innervation of ECRL and ECRB before entrance to radial tunnel Lateral elbow pain w/ resisted pronation and supination