- a)Calibre of the Arthroscope:
The diameter of the outer trocar determines the depth to which the joint space can be entered and, above all, the ability to inspect the posterior part of the medial meniscus. An arthroscope which is used to examine the knee joint should be as thin as possible. An investigator who is not yet fully skilled runs less risk of damaging the vulnerable surface of the cartilage with a thin instrument than with a thick one. On the other hand, the small-calibre instrument seems to be more liable to breakdown; bending of the endoscope may lead to blurring of the optical pathway or even fracture of the instrument.
KeywordsKnee Joint Optical System Medial Meniscus Outer Tube Biopsy Forceps
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