A patient is being fitted for a functional hinged knee brace following an ACL reconstruction. What is the primary purpose of the adjustable hinges on this type of brace?
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A
To provide rigid immobilization of the knee joint.
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B
To allow for a controlled and gradually increasing range of motion.
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C
To apply continuous cold therapy to the surgical site.
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D
To increase varus and valgus stress for ligament testing.