Arthrology: Glenohumeral joint Flashcards

1
Q

GH Joint type

A

Ball and socket, multiaxial

Largest ROM and movement in body

Limited ligamentous support

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2
Q

Extension arthrokinematics

A

inferior roll, superior glide

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3
Q

Flexion arthrokinematics

A

superior roll, inferior glide

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4
Q

Abduction arthrokinematics

A

superior roll, inferior glide

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5
Q

Adduction arthrokinematics

A

inferior roll, superior glide

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6
Q

External rotation arthrokinematics

A

posterior roll, anterior glide

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7
Q

Internal rotation arthrokinematics

A

Anterior roll, posterior glide

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8
Q

Open packed position

A

55 deg ABD, 30 deg horiz ADD

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9
Q

Close packed position

A

End range ABD and ER

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10
Q

Static stabilizers

A

Labrum
Joint capsule
- ant/inf portions most thick
GH ligaments
Inferior GH ligament complex

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11
Q

Dynamic stabilizers

A

Rotator cuff
Deltoid
- large stabilizer in all positions

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12
Q

Innervation

A

Axillary n.
Suprascapular n.
Lateral pectoral n.

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13
Q

Subacromial “impingement”

A

Repeated compression of RCT, long head of biceps, subacromial bursa

Causes:
- RCT dysfunction
- scapular positioning
- shape of acromion
- GH joint hypo/hypermobility

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14
Q

Tendonitis

A

Tendons intimate with capsule
Rarely isolated to one tendon

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