Method and apparatus for accessing the interior of a hip joint, including the provision and use of a novel telescoping cannula and a novel telescoping obturator
A telescoping access cannula comprising: an outer tube; an inner tube carried by the outer tube, the inner tube being coaxial with the outer tube and longitudinally movable relative to the outer tube; and a rotatable member carried by the outer tube and connected to the inner tube, wherein rotation of the rotatable member causes longitudinal movement of the inner tube relative to the outer tube.外管と、この外管によって担持される内管であって、外管と同軸で、外管に対して長手方向に移動可能な内管と、外管によって担持され、内管に接続された回転可能な部材とを備え、前記回転可能な部材が回転すると前記内管が前記外管に対して長手方向に移動する、入れ子式アクセスカニューレ。