Cubital Fossa.pptx
- 2. As per: Competency based Undergraduate curriculum 1 AN11.5: Identify and describe boundaries and contents of cubital fossa. AN11.3: Describe the anatomical basis of venipuncture of cubital veins. AN11.6: Describe the anastomosis around the elbow joint. Medical Council of India, Competency based Undergraduate curriculum for the Indian Medical Graduate, 2018. Vol. 1; pg 1-80. 2
- 3. Cubital Fossa Q. Describe the cubital fossa under following heads: boundaries, contents, and applied aspects. • Potential, triangular space situated in front of the elbow • Homologous with the popliteal fossa of lower limb. Popliteal fossa is located behind the knee.
- 4. Boundaries, Roof, and Floor Boundaries Medial: Lateral border of pronator teres Lateral: Medial border of brachioradialis Base: An imaginary line joining two epicondyles of humerus Apex: Meeting point of medial and lateral boundaries 4
- 5. Boundaries, Roof, and Floor Roof 1. Skin 2. Superficial fascia 3. Median cubital vein (runs medially upward) 4. Medial cutaneous nerve of forearm 5. Lateral cutaneous nerve of forearm 5
- 6. Boundaries, Roof, and Floor Floor 1. Brachialis 2. Supinator 6
- 7. Contents of Cubital Fossa Q. List the contents of cubital fossa. • The contents of the cubital fossa from medial to lateral are (mnemonic: MBBR) 1. Median nerve 2. Brachial artery 3. Biceps brachii tendon 4. Radial nerve 7
- 8. • Mnemonic: MBBR • Median nerve • Termination of Brachial artery and beginning of radial and ulnar arteries. • Bicipital aponeurosis • Radial nerve Contents of Cubital Fossa (Medial to Lateral)
- 10. 10 Fig. 14.8: Contents of cubital fossa (right, anterior view). Note: Median nerve passes between two heads of pronator teres, whereas ulnar artery passes deep to both the heads of pronator teres muscle.
- 12. Clinical Integration Q. Write a short note on median cubital vein or venipuncture in the cubital fossa. • Intravenous injections: Median cubital vein is often used for intravenous injections as it is fixed with deep veins through perforating veins (that passes through bicipital aponeurosis) 12
- 14. Clinical Integration • Recording of blood pressure: Brachial artery is auscultated in the cubital fossa for recording of blood pressure. 14
- 15. Clinical Integration • Brachial artery and median nerve are protected from external injuries by bicipital aponeurosis • Biceps jerk: For eliciting biceps jerk, tendon of biceps is stroked with tendon hammer in the cubital fossa. 15
- 16. Clinical Integration • Sides of safety: In the cubital fossa, the median nerve gives branches on medial side, whereas the radial nerve on its lateral side. Hence, during surgeries of the cubital fossa lateral to median nerve and medial to radial nerve are sides of safety to avoid the injuries to the branches of these nerves. 16