This instrument is intended to simplify the operation for advancement of the recti muscles and to make it possible to regulate with certainty the amount of shortening obtained. It consists of a small hook, the shank of which is embedded in the anterior surface of a larger one, and the arm of which passes between the blades of the forked arm of the larger one. By means of a milled screw and a ratchet the single hook may be projected beyond and between the blades of the double one, so as to take up a fold of the tendon and draw it up between the blades to the desired height, when the sutures may be introduced and the superfluous fold cut off, if so desired. The instrument is made with a detachable handle, so that during the suturing the aid of an assistant may be dispensed with. I have found
CLARK CF. A DOUBLE HOOK FOR USE IN ADVANCEMENT OPERATIONS. JAMA. 1900;XXXV(20):1270. doi:10.1001/jama.1900.24620460020001h
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