Arthroscopic surgery method for ankle ligament reconstruction

Abstract

An arthroscopic surgery method for ankle ligament reconstruction of this embodiment is removed using an ultrasonic treatment tool, blowing away a synovial membrane, and secures the view for a remnant ligament. Then, bone holes are produced to a fibula, a talus and a calcaneus using the ultrasonic treatment tool.

1 . An arthroscopic surgery method with an ultrasonic treatment tool,
 the ultrasonic treatment tool comprising:
 a probe defining a longitudinal axis and configured to transmit ultrasonic vibration; 
 a treating portion at a distal part, the treating portion comprising a projection at its distal end, the projection having a quadrilateral shape when viewed from the distal part toward a proximal part of the treating portion, the treating portion including:
 a first portion; 
 a plurality of second portions, a distal-most surface of the plurality of second portions each including a sharp edge configured to cut bone and being closer to the proximal part than a distal-most surface of the first portion; and 
 a third portion closer to the proximal part than the first portion and the plurality of second portions; and 
 
 a perfusion mechanism configured to provide a perfusate around a bone to be treated, 
   the method comprising:
 cutting the bone by moving the ultrasonic treatment tool while pressing the first portion, the plurality of second portions, and the third portion against the bone; 
 after cutting the bone, removing any bone particles produced by cutting the bone using the perfusate of the perfusion mechanism; and 
 fixing a tendon to a bone hole formed by the first portion, the plurality of second portions, and the third portion. 
   
     
     
         2 . The method according to  claim 1 , wherein:
 surfaces on which the plurality of second portions are located are symmetrical with respect to a surface on which the first portion is located when viewed from the distal part toward the proximal part.   
     
     
         3 . The method according to  claim 1 , wherein
 the probe has a shape of a rod extending in the longitudinal axis and having a diameter of 2 mm to 4 mm.   
     
     
         4 . The method according to  claim 1 , wherein:
 fixing the tendon comprises inserting an anchor supporting the tendon into the bone hole and inserting a fixing thread through the anchor.   
     
     
         5 . The method according to  claim 4 , further comprising:
 pulling the fixing thread via the anchor and fixing the tendon with a screw using a predetermined tension.