The thenar space is one of the three deep palmar spaces in the hand, located on the thumb side of the palm. It's a fibrofatty compartment that, while existing, is less commonly the site of infections compared to other palmar spaces.
Location and Boundaries
The thenar space's boundaries are defined as follows:
- Ulnarly: The midpalmar septum, which extends from the palmar aponeurosis to the palmar border of the third metacarpal bone.
- Content: This space contains the first lumbrical muscle.
Clinical Significance
Although the thenar space is present, it's relatively uncommon for infections to localize primarily within this space. Infections of the hand typically involve other palmar spaces like the midpalmar space more frequently. Understanding the anatomy of these spaces is crucial for diagnosing and treating hand infections effectively.
Key Takeaways
- The thenar space is a deep palmar space in the hand.
- It is defined by specific anatomical boundaries.
- It is less frequently involved in hand infections compared to other palmar spaces.
