Anatomy & Structures in the Carpal Tunnel

The video tutorial explains the anatomy and function of the flexor and extensor retinacula in the wrist. It details how the extensor retinaculum prevents tendon bowing and divides tendons into compartments. The flexor retinaculum's role in forming the carpal tunnel is highlighted, along with the structures passing through it, including the median nerve and flexor tendons. The video also clarifies common misconceptions about the carpal ligament and its relation to the flexor retinaculum.

What is the primary function of the extensor retinaculum?

• To allow free movement of tendons

• To prevent bowing of extensor tendons

• To support the carpal bones

• To protect the median nerve

Which structure forms the superficial boundary of the carpal tunnel?

• Extensor retinaculum

• Carpal ligament

• Flexor retinaculum

• Median nerve

What is the function of the flexor retinaculum?

• To support the extensor tendons

• To convert carpals into a concave surface

• To protect the ulnar nerve

• To divide the wrist into compartments

What is the role of the carpal ligament?

• To form the superficial boundary of the carpal tunnel

• To support the extensor tendons

• To form the deep boundary of the carpal tunnel

• To protect the radial artery

Which bones are involved in forming the carpal tunnel?

• Metacarpals, phalanges

• Trapezium, scaphoid, lunate, triquetrum

• Clavicle, scapula

• Radius, ulna, humerus

What is the specific compartment within the carpal tunnel for the flexor carpi radialis tendon called?

• Guyon's canal

• Carpal tunnel proper

• Presidential tunnel

• Flexor compartment

Which nerve passes through the carpal tunnel?

• Median nerve

• Radial nerve

• Axillary nerve

• Ulnar nerve

Which tendons are found in the carpal tunnel proper?

• Extensor digitorum

• Palmaris longus

• Flexor carpi ulnaris

• Flexor digitorum superficialis and profundus

Where are the ulnar artery and nerve located in relation to the carpal tunnel?

• Above the flexor retinaculum

• Outside the carpal tunnel

• Inside the carpal tunnel

• Below the extensor retinaculum

What is the canal of Guyon associated with?

• Median nerve

• Ulnar artery and nerve

• Flexor carpi radialis

• Extensor tendons