Back Of The Forearm
Question 1. Describe the extensor retinaculum at the wrist in brief.
Answer.
The extensor retinaculum is a strong fibrous band about 2 cm broad running obliquely downwards and medially on the back of the wrist. It is formed by the thickening of the deep fascia. It holds the extensor tendons in place.
“Understanding the back of the forearm through FAQs: Composition, functions, and uses explained”
Retinaculum at Wrist Attachments
Laterally to the lower 2 cm of the anterior border of the radius.
Medially to:
- Styloid process of the ulna
- Triquetral bone
- Pisiform bone
Retinaculum at Wrist Compartments
“Factors influencing success with back of the forearm studies: Q&A”
Space deep to the extensor retinaculum is divided into six osseofascial compartments by septa, extending from rthe etinaculum to the ridges on the dorsal aspect of the lower ends of the radius and ulna. The compartments are numbered I–VI from lateral to medial side.
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