34 Questions
What is the primary function of the interosseous membrane?
To provide a mechanism for transmitting force proximally through the upper limb
What is the primary function of the interosseous membrane in the forearm?
To provide a mechanism for transmitting force proximally through the upper limb
What is the primary role of the interosseous membrane?
To transmit force proximally through the upper limb
What percentage of compression force is directed through the radiocarpal joint?
80%
What percentage of compression force is directed through the radiocarpal joint?
80%
Which of the following is NOT a function of the interosseous membrane?
To prevent ulnar fractures
What percentage of compression force is directed through the radiocarpal joint?
80%
Which muscle contracts to assist with holding the radius and load firmly against the capitulum?
Brachioradialis
Which muscle contracts to assist with holding the radius and load firmly against the capitulum?
Brachioradialis
What is the name of the fibers that bind the radius firmly to the ulna?
Central band fibers
What happens when there is a distal pull of the radius on the interosseous membrane?
The membrane slackens
What is the central band of the interosseous membrane responsible for?
Binding the radius firmly to the ulna
Which ligament experiences larger demands on other tissues when there is a distal pull of the radius?
Oblique cord
What happens when there is a distal pull of the radius?
The central band of the interosseous membrane slackens
What muscle contracts to assist with holding the radius and load firmly against the capitulum?
Brachioradialis
Which joint experiences the most compressive force transmitted through the interosseous membrane?
Radiocarpal joint
What is the central band of the interosseous membrane responsible for?
Transmitting force proximally through the upper limb
What happens when the distal pull of the radius slackens the interosseous membrane?
The membrane becomes slack
What is the function of the extrinsic muscles of the hand that attach to the interosseous membrane?
To move the fingers
What is the function of the interosseous membrane in relation to the ulna?
It transfers part of the proximal directed force through the radius to the ulna
What can happen as a result of the interosseous membrane transferring force from the radius to the ulna?
Increased likelihood of radial fracture
Which muscle experiences a deep ache when fatigued due to its role in holding the radius and load firmly against the capitulum?
Brachioradialis
Which type of muscle is attached to the interosseous membrane?
Extrinsic muscles of the forearm
Which bone is firmly bound to the ulna by the central band fibers?
Radius
Which ligament is responsible for stabilizing the radius during pronation and supination?
Annular ligament
What is the significance of the fiber direction of the central band in the interosseous membrane?
It allows for equal distribution of compressive forces across the elbow
What is the oblique cord?
A ligament that connects the radius to the ulna
Which tissue experiences larger demands when the distal pull of the radius slackens the interosseous membrane?
Oblique cord
What is the annular ligament?
A ligament that encircles the head of the radius
What can cause a deep ache in the brachioradialis muscle?
Overuse
What is the primary function of the extrinsic muscles of the hand that attach to the interosseous membrane?
To assist with finger extension and flexion
What is the name of the joint where 80% of compression force is directed through?
Radiocarpal joint
Which joint experiences the majority of the compressive forces transmitted through the upper limb?
Wrist joint
What is the result of the interosseous membrane transferring force from the radius to the ulna?
Increased likelihood of radial fracture
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