Flexor Digitorum Superficialis Anatomy

The video tutorial provides an in-depth look at the flexor digitorum superficialis, covering its anatomy, origin, insertion, and function. It explains the relationship with the median nerve and the ulnar artery, and details testing methods for both the flexor digitorum superficialis and profundus. The tutorial also discusses clinical implications, such as flexor tendon injury zones, and concludes with a summary of key points.

What does the flexor digitorum superficialis cover?

• The tibia and fibula

• The humerus and femur

• The radius and ulna

• The scapula and clavicle

Where does the humeral head of the flexor digitorum superficialis originate?

• Lateral epicondyle

• Medial epicondyle

• Coracoid process

• Olecranon process

What structure is formed when the flexor digitorum superficialis splits around the profundus?

• Extensor hood

• Flexor retinaculum

• Carpal tunnel

• Camper's chiasma

Into which part of the fingers do the tendons of the flexor digitorum superficialis insert?

• Base of the metacarpals

• Base of the proximal phalanges

• Base of the middle phalanges

• Base of the distal phalanges

Which nerve supplies the flexor digitorum superficialis?

• Axillary nerve

• Median nerve

• Radial nerve

• Ulnar nerve

Where is the ulnar artery located in relation to the flexor digitorum superficialis?

• Lateral to it

• Superficial to it

• Deep to it

• Between it and the profundus

How can you test the function of the flexor digitorum superficialis?

• Flex the DIP joint while other fingers are extended

• Flex the PIP joint while other fingers are extended

• Extend the PIP joint while other fingers are flexed

• Flex the MCP joint while other fingers are extended

What indicates an intact flexor digitorum profundus during testing?

• Flexion of the PIP joint

• Flexion of the DIP joint

• Extension of the MCP joint

• Extension of the DIP joint

What is a contraindication for digit implantation?

• Injury to the ulnar artery

• Injury to the median nerve

• Injury proximal to the flexor digitorum superficialis

• Injury distal to the flexor digitorum superficialis

Which zone is associated with injury distal to the flexor digitorum superficialis insertion?

• Zone 1

• Zone 2

• Zone 3

• Zone 4