Elbow Flashcards

1
Q

Supracondylar Ridge

A

On lateral side

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2
Q

Carrying Angle

A

Oblique groove of trochlea –> valgus angle of elbow.
Bring arm toward face in flexion, away from midline in extension
11-14 degrees in males
13-16 degrees in females

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3
Q

Gunstock Deformity

A

Reduction in carrying angle

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4
Q

Biceps tendon inserts:

A

Radial/ bicipital tuberosity

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5
Q

Radial Head

A
  • Doesn’t contact humerus in full extension
  • Spins on capitulum and radial notch of ulna
  • Radial nerve runs right here
  • Vulnerable to fx with direct impact or by compression with FOOSH
  • Supported by extensor wad and annular ligament
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6
Q

Most functional movement of the elbow

A

Flexion

Functional ROM: 30-130

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7
Q

Humeroulnar joint

A

Modified sellar

Close-packed = extension

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8
Q

Radiohumeral joint

A

Modified ovoid
Close-packed = flexion
*No contact in extension

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9
Q

What type of glides increase elbow extension?

A

A–> P

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10
Q

What type of glides increase elbow flexion?

A

P–>A

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11
Q

Ulnar Collateral Ligament

A

Three parts:

  1. Anterior Oblique (primary stabilizer, taut in all ranges)
  2. Posterior Oblique (Taut in flexion)
  3. Transverse (stabilizes ulnar n.)

Resists valgus force
Vascular/ innervated –> Painful

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12
Q

UCL Injury

A

Medial Traction: UCL, Flexor tendon, Ulnar Nerve
Posterior Compression: Olecranon (fossa)
Lateral Compression: Capitulum, radial head

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13
Q

Radial Collateral Ligament

A

Prevents Varus stretch
Poorly defined
Reinforced by annular ligament

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14
Q

Brachioradialis

A

Largest flexor muscle mass
Most efficient in neutral forearm
Radial nerve

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15
Q

Biceps Brachii

A

Flexes elbow and supinates forearm
Most effective in supination
Musculocutaneous nerve

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16
Q

Brachialis

A

Medial to biceps
Find in pronation
Musculocutaneous nerve

-Brachialis Heterotopic ossification: from over-stretching

17
Q

Triceps

A

Radial nerve

18
Q

Borders of cubital fossa

A

Medial: Pronator teres
Lateral: Brachioradialis
Posterior: Brachialis/ Supinator
Anterior: Bicipital Aponerosis

19
Q

Median nerve path near cubital fossa

A

Under bicipital aponerosis

Between heads of pronator teres

20
Q

Radial nerve pathway

A

Anterior to lateral epicondyle
Between brachialis and brachioradialis (“radial tunnel”)
Branches into superficial and deep: Posterior interosseous
Through heads of supinator (“arcade of frohse”)

21
Q

Ulnar nerve pathway

A

From anterior to posterior thorough arcade of struthers
Behind medial epicondyle in ulnar notch
Between heads of flexor carpi ulnaris