Updated: 12/26/2021

Subscapularis

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  • Summary
    • Subscapularis
      Origin
      Subscapular fossa of scapula
      Insertion
      Lesser tuberosity of humerus
      Action
      Medially rotates arm and adducts it; helps to hold humeral head in glenoid cavity of scapula
      Innervation
      Upper and lower subscapular nerves (C5, C6, C7)
      Arterial Supply
      Subscapular artery

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(OBQ06.179) The lift-off test evaluates internal rotation of the shoulder with the hand placed behind the back. During this test, which muscle exhibits the highest percent of maximal contraction?

QID: 365
1

Subscapularis

96%

(4673/4851)

2

Pectoralis major

1%

(36/4851)

3

Pectoralis minor

0%

(22/4851)

4

Latissimus dorsi

1%

(37/4851)

5

Supraspinatus

1%

(58/4851)

L 1 C

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