Abstract: This invention relates to a medical device, namely a novel clip to be used in conjunction with a Harrington rod for the treatment of spinal disorders. The hook has a body portion with a housing at one end thereof, with a hooked portion at the opposite end. A sleeve is inserted through and is retained in a channel which extends through the housing by a retaining means. Using this clip, it is possible to spread the load over more than one lamina as more than one hook may be used in the procedure. This thus allows a patient to be mobile without external support immediately following surgery which has been impossible with the prior art devices.