What are the carpal bones in the distal row from lateral to medial?

What are the carpal bones in the distal row from lateral to medial?

• A. Hamate, Capitate, Trapezoid, Trapezium
• B. Trapezium, Trapezoid, Capitate, Hamate
• C. Capitate, Trapezium, Hamate, Trapezoid
• D. Scaphoid, Lunate, Triquetrum, Pisiform

Answer: (B)

The distal row of carpal bones, from lateral to medial, consists of the Trapezium, Trapezoid, Capitate, and Hamate. This sequence is essential for understanding wrist anatomy and its functional implications. The Trapezium is located on the radial side and articulates with the base of the first metacarpal, forming the carpometacarpal joint of the thumb, which is critical for opposition and gripping. The Trapezoid is next, acting as a bridge to the Capitate, which is the largest carpal bone and serves as a central anchor for the carpal structure. The Hamate, with its distinctive hook, provides attachment for the flexor retinaculum and is involved in supporting the fourth and fifth metacarpals. The other options include incorrect arrangements or combinations of carpal bones. Some include proximal row bones or do not reflect the correct lateral to medial orientation. Understanding the anatomy and relationships of the carpal bones is vital for diagnosing and treating wrist injuries and conditions effectively.

The distal row of carpal bones, from lateral to medial, consists of the Trapezium, Trapezoid, Capitate, and Hamate. This sequence is essential for understanding wrist anatomy and its functional implications.

The Trapezium is located on the radial side and articulates with the base of the first metacarpal, forming the carpometacarpal joint of the thumb, which is critical for opposition and gripping. The Trapezoid is next, acting as a bridge to the Capitate, which is the largest carpal bone and serves as a central anchor for the carpal structure. The Hamate, with its distinctive hook, provides attachment for the flexor retinaculum and is involved in supporting the fourth and fifth metacarpals.

The other options include incorrect arrangements or combinations of carpal bones. Some include proximal row bones or do not reflect the correct lateral to medial orientation. Understanding the anatomy and relationships of the carpal bones is vital for diagnosing and treating wrist injuries and conditions effectively.