flexor compartment of forearm

1. SajanSkaria
Assistant Professor
Department of Anatomy
AIIMSUdaipur
Flexor compartment of Forearm

2. Bones
Antebrachial fascia
Fascial compartments

3. Cutaneous
innervation

4. Superficial group
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor digitorum superficialis
Flexor carpi ulnaris
Synergists

5. Superficial
muscles
Common flexor origin-
Medial epicondyle of humerus

6. Tendinous arch
Flexor
digitorum
superficialis

7. Palmar aponeurosis
Flexor retinaculum

8. Golfer’s elbow

9. Muscles of
deep group
9
Flexor digitorum
profundus
Flexor pollicis
longus
Pronator quadratus

10. Deep
muscles

12. Nerve supply
All the muscles of superficial group- median
nerve except flexor carpi ulnaris - ulnar
nerve
All the muscles of deep group – anterior
interosseous nerve(branch of median nerve)
except flexor digitorum profundus (hybrid
m.) - AIN + ulnar nerve)

13. Vessels of
forearm

14. • Anterior interosseous artery
• Posterior interosseous artery

15. Vessels-
ulnar
artery

16. Branches of ulnar arteries

17. Interosseous
arteries

18. Radial artery

19. Radial pulse at the distal end of radius

20. Radial artery in anatomical snuff box

21. High origin of
radial artery / division of brachial artery

22. Variation in origin of radial artery

23. Harvesting radial artery for coronary
bypass

24. Superficial ulnar artery
 Visible pulsations
 Careful when venesections/ IVI

25. Volkmann’s ischemic
contracture
 Flexion at wrist
 Extension of MP
joint
 Flexion of IP
Joint

26. Nerves -
Median nerve

27. Pronator Syndrome

28. Anterior
interosseous nerve

29. Ulnar nerve
Cubital tunnel - cubital tunnel syndrome

30. Guyon’s tunnel - Ulnar tunnel syndrome

31. Radial
nerve

32. Sites of ulnar
nerve injury
At the elbow
In the cubital
tunnel
At the wrist
In the hand

33. Arrangement of structures at the wrist

34. Martin Gruber anastomosis

35. Anterior interosseous syndrome

36. Surgical safe side - lateral
side of anterior aspect of
forearm

37. The wrist is the most preferred
site for ‘suicidal cut’