Abstract: The invention provides a lumbago treatment instrument which manipulates the pelvis safely and properly by pressing the coccyx utilizing the patient's own body weight. A coccyx contact treatment member is disposed inside a cylindrical casing so as to be movable in the vertical direction via an elastic member. A coccyx contact buffering member made of sponge or the like is provided on the upper end of the coccyx contact treatment member. The patient straddles the coccyx contacting buffering member, assuming a sitting posture, and places the coccyx on the coccyx contact buffering member. In this posture, both feet are slightly lifted from the floor to apply the body weight on the coccyx contact buffering member so that the coccyx is pushed up from below. When doing so, the patient continues to maintain an upright posture while pressing the upper body against a posture holding member and gripping a handle with both hands.

Abstract: [Problem] To safely and properly correct the pelvis by pressing the coccyx using the weight of a recipient himself/herself. [Solving Means] A coccyx contact treatment member (9a) is placed in a cylindrical casing (7) so as be vertically movable through an elastic member (10). A coccyx contact buffering member (11) made of sponge or the like is provided on the upper end of the coccyx contact treatment member (9a). A recipient straddles and takes a sitting posture on the coccyx contact buffering member (11) to place his/her coccyx on the coccyx contact buffering member (11). In this posture, the recipient slightly lifts his/her legs from the floor to apply his/her weight onto the coccyx contact buffering member (11), so that the coccyx is pushed up from below. At this time, the recipient maintains an erect posture while pressing his/her upper body against a posture holding member (2) and gripping a handle with his/her both hands.