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.

Abstract: An arthroscopic surgery method for ankle impingement of the embodiment removes a posterior process of talus from the portal formed in the position specified beforehand by vibrating ultrasonically of an ultrasonic treatment tool which inserted and inserted the ultrasonic treatment tool to the posterior process of talus and a tendon sheath of flexor hallucis longus muscle tendon, and deletes the tendon sheath of flexor hallucis longus muscle tendon by the ultrasonic treatment tool used for deleting the posterior process of talus.

Abstract: A contact portion, provided in an exposed surface of the treating section, treats a treated object by a transmitted ultrasonic vibration while intruding into the treated object toward an intruding direction from a state being in contact with the treated object. An index portion is disposed on an anti-intruding direction side with respect to the contact portion in the exposed surface. The index portion becomes an index indicating an intruding amount of the contact portion into the treated object toward the intruding direction. The index portion includes index surfaces arranged in the intruding direction, and each of the index surfaces has an angle relative to the intruding direction which is different from the angle of the adjacent index surface.

Abstract: A surgical procedure of preparing bone holes to fix an implanted tendon to a femur when performing reconstruction of a ligament in a knee joint, includes: bringing a treatment portion of an ultrasonic treatment instrument into contact with the femur in the knee joint, and applying ultrasonic vibration from the treatment portion to the femur, thereby cutting and forming a first bone hole from the inside of the knee joint to the femur in a predetermined depth.

Abstract: A knee joint surgical treatment under an arthroscope includes: excising a treatment object of a synovial membrane by an ultrasonic vibration to the treating portion in a state where the treating portion is in contact with the treatment object of the synovial membrane; facing the treating portion to a treatment object of a meniscus, the treating portion being used in excising the treatment object of the synovial membrane; and removing the treatment object of the meniscus by contacting the treating portion with the treatment object of the meniscus and by the ultrasonic vibration in a state where the treating portion is in contact with the treatment object of the meniscus.

Abstract: A surgical treatment of a ligament of a knee joint under an arthroscope, includes: forming concave holes from the region of the tibia to which the ligament adheres toward an inner side of a rough surface of the tibia and from the region of the femur to which the ligament adheres toward an outer surface of a lateral condyle of the femur by ultrasonically vibrating the treating portion; forming tunnels between the concave hole of the tibia and the medial side of the rough surface of the tibia using the concave hole of the tibia and between the concave hole of the femur and the lateral surface of the lateral condyle of the femur using the concave hole of the femur.

Abstract: A joint surgical treatment under an arthroscope, includes: excising a treatment object of a synovial membrane, by transmitting an ultrasonic vibration to a treating portion of an ultrasonic device in a state where the treating portion is in contact with the treatment object of the synovial membrane; facing the treating portion to a treatment object of a cartilage, the treating portion being used in excising the treatment object of the synovial membrane; and removing the treatment object of the cartilage, by contacting the treating portion with the treatment object of the cartilage, and by transmitting the ultrasonic vibration to the treating portion in a state where the treating portion is in contact with the treatment object of the cartilage.

Abstract: A surgical treatment of a shoulder joint, includes inserting an arthroscope and an ultrasonic device into the shoulder joint, and removing a bursa and removing a bone spur present under an acromion in a state seen with the arthroscope by use of the ultrasonic device which ultrasonically vibrates.

Abstract: A joint surgical treatment includes bringing a treating portion of an ultrasonic device into contact with a damaged region of a cartilage that is a treated object region in the joint, and transmitting an ultrasonic vibration to the treating portion in contact with the treated object region while observing the treated object region with the arthroscope to remove the treated object region of the cartilage. The ultrasonic vibration is used to remove the treated object so as to smoothly continue a removed surface from which the treated object region is removed and a non-removed surface adjacent to the removed surface without forming any corners between the surfaces in the cartilage.

Abstract: An elbow joint surgical treatment includes transmitting an ultrasonic vibration to a treating portion of an ultrasonic device to excise the treated object region of the synovial membrane, and bringing the treating portion of the ultrasonic device, used in excising the synovial membrane, to come in contact with an osteophyte positioned in one of a coronoid fossa of a humerus, an olecranon fossa of the humerus, a coronoid process of an ulna, and an olecranon. The surgical treatment includes transmitting an ultrasonic vibration to the treating portion in contact with the osteophyte to remove the osteophyte.

Abstract: A surgical treatment of an ACL or a PCL of a knee joint under an arthroscope, includes: contacting a treating portion of an ultrasonic device with a start region to which the ACL or the PCL of a femur adheres, and excising the femur and a remaining ligament of the ACL, or the femur and a remaining ligament of the PCL by ultrasonically vibrating the treating portion, thereby exposing a footprint of the femur; and contacting the treating portion with an end region to which the ACL or the PCL of a tibia adheres, and excising the tibia and a remaining ligament of the ACL, or the tibia and a remaining ligament of the PCL by ultrasonically vibrating the treating portion, thereby exposing a footprint of the tibia.

Abstract: A knee joint surgical treatment under an arthroscope includes: contacting a treating portion of an ultrasonic device with an end region to which an ACL or a PCL of a tibia adheres and with a start region to which the ACL or the PCL of a femur adheres, excising the tibia and a remaining ligament of the ACL, or the tibia and a remaining ligament of the PCL, excising the femur and a remaining ligament of the ACL, or the femur and a remaining ligament of the PCL by ultrasonically vibrating the treating portion, thereby exposing footprints of the tibia and the femur; and forming tunnels between the footprint of the tibia and a medial side of a rough surface of the tibia and between the footprint of the femur and an lateral surface of a lateral condyle of the femur.

Abstract: A contact portion, provided in an exposed surface of the treating section, treats a treated object by a transmitted ultrasonic vibration while intruding into the treated object toward an intruding direction from a state being in contact with the treated object. An index portion is disposed on an anti-intruding direction side with respect to the contact portion in the exposed surface. The index portion becomes an index indicating an intruding amount of the contact portion into the treated object toward the intruding direction. The index portion includes index surfaces arranged in the intruding direction, and each of the index surfaces has an angle relative to the intruding direction which is different from the angle of the adjacent index surface.