12 Questions
What is the function of the central band of the interosseous membrane?
It binds the radius to the ulna
What percentage of compression force crossing the wrist is directed through the radiocarpal joint?
80%
Where does 20% of the force cross the medial side of the wrist?
Ulnocarpal space
What is the purpose of transferring part of the proximal directed force through the radius to the ulna?
To reduce wear and tear on each individual joint.
What can lead to a radius fracture?
Falling on an outstretched hand
What type of muscles attach to the interosseous membrane?
Extrinsic muscles of the hand
What joint shares compression forces equally with the humero-ulnar joint?
Humero-radial joint
What percentage of compression force crossing the wrist is directed through the ulnocarpal space?
20%
What is the significance of the interosseous membrane in transmitting force through the upper limb?
It allows force to be transmitted proximally through the upper limb
Which joint allows compression force to cross the elbow via the interosseous membrane?
Humero-ulnar joint
What is the primary direction of force transmission through the upper limb?
Proximal to distal
What is the purpose of sharing compression forces equally between the humero-ulnar and humero-radial joints?
To decrease wear and tear on each individual joint.
Study Notes
- The central band of the interosseous membrane binds the radius to the ulna.
- It serves as an attachment site for extrinsic muscles of the hand.
- It transmits force proximally through the upper limb.
- 80% of compression force crossing the wrist is directed through the radiocarpal joint.
- 20% of the force crosses the medial side of the wrist through the ulnocarpal space.
- Part of the proximal directed force through the radius is transferred across the membrane to the ulna.
- This mechanism allows compression force to cross the elbow via the humero-ulnar joint.
- The humero-ulnar and humero-radial joints share compression forces equally.
- This reduces long-term wear and tear on each individual joint.
- Falling on an outstretched hand can lead to a radius fracture.
Test your knowledge of the interosseous membrane and its role in transmitting force through the upper limb with this quiz. From its attachment sites to its impact on joint compression, this quiz covers all the essential information. Discover how this mechanism allows for the transfer of force from the radius to the ulna, and how it can affect the humero-ulnar joint. Plus, learn about potential injuries that can result from falling on an outstretched hand. Get ready to become an expert on the inter
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