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Anatomy block-4 Gems-1
Auc Axillary
20
Anatomy
Graduate
03/24/2011

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Cards

Term
Humerus muscle fractures
Definition
Greater tubercle: Supraspinatus, Infraspinatus, Teres Major

Fractures of lesser tuburcle: Posterior dislocation, subscapularis

Fractures of surgical neck: axillary nerve, posterior circumflex via quadrangular space
Term
Rotator cuff muscles
Definition
Supraspinatus - supra scapular
Infraspinatus - supra scapular
Teres Minior - Axilary
Subscapularis - subscapularis

Insert on greater tubercle except
subscapularis = lesser tubercle/neck
Term
Quadrangular Space
Definition
Superior: teres minor
Inferior: teres major
Medial: long head of triceps
Lateral: Surgical neck of humerous

Contents: Axillary n., Posterior circumflex humeral a.v.
Term
Triangular Space
Definition
Lateral: long head of triceps
Superior: Teres minor
Inferior: Teres Major

Contents: Circumflex scapular a.v.
Term
Rotator cuff injury
Definition
Supraspinatus injury is usually damaged
Term
Erb-Duchenne or Erb's Palsy
Definition
Waiters Tip pulsy
Upper c5,c6 root lesion at union. Erbs Point.

Pec Major unopossed. Medially rotates shoulder.

arm: adducted, internally rotated, wrist flexed.
Term
Shoulder Seperation
Definition
Acromioclavicular separation.

Acromioclavicular, coracoclavicular,
Term
Axillary Folds
Definition
Anterior axillary: lateral border of pec major

Posterior Axillary fold: Teres major and lat dorsi.
Term
Pectoral Fascia

Clavipectoral Fascia
Definition
Superficial layer investing pectoralis Major

Clavipectoral fascia: deep layer from clavicle to axilary fascia. invests subclavius and pec minor
Term
Costocorocoid membrane
Definition
Superior portion of of clavipectoral fascia above the pectoralis minor.

Pierced by cephalic vein, Lateral pectoral n, thoracoacromial a
Term
Coracoaxillary membrane(suspensory ligament of axilla)
Definition
Inferior portion of clavipectoral fascia, below pectoralis minor
Term
Halstad Ligament
Definition
Invests subclavian a.v. as they transverse the first rib

dense condensatoin of clavipectoral fascia

between medial portion of clavicle and 1st rib.
Term
Axillary Sheath
Definition
From deep cervical fascia and covers the first part of the Axillalry artery and vein.

Brachial plexus nerve block can be done here
Term
1st part of axilary artery
Definition
medially: 1st rib.
Laterally: pectoralis minor

Superior thoracic artery: serratus anterior and intercostal spaces
Term
2nd part of axilary artery
Definition
anterior:pec minor
Posterior: posterior cord of brachial plexus

thoracoacromial a. Pierces clavipectoral fascia splits into acromial, deltoid, pectoral, clavicular

Lateral thoracic: axillary lymp, lateral breast.
Term
3rd portion of axillary artery
Definition
medially: pec major
lateral: teres major

subscapular a: circumflex scapular, thoracodorsal
anterior CHA: deep to biceps and coracho
possterior CHA: passes through quadrangular space
Term
Axillary Artery clinical
Definition
Seperated into three parts by Pec minor.

If ligation is distal to subscapular artery then axillary ischemia will occur

Scapular anastomoses
1. suprascapular
2. dorsal scapular
3. circumflex scapular
4. maybe intercostal
Term
Coracoacromial ligamenet
Definition
prevents humerus from dislocating superiorly.

Can rub against and wear down supraspinatus muscle tendon
Term
Rotator Cuff muscles
Definition
Support shoulder j. form musculotendinous rotator cuff

Reinforces j. on all sides except inferiorly -vul. dislocation

think of S(ub)SIT (hand holding head of humerus)
Term
Subacromial bursitis & tearing of supraspinatus tendon
Definition
inflammation due to calcific supraspinatus tendinitis causing painful arc of abduction

Inflamation or trauma of the supraspinatus tendon will result in same symptoms
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