instruction:
Given an abstract of a paper, generate a title for this paper such that conveys the key focus of the paper.
question:
Abstract: A new right hemisphere symptom is reported. Five stroke patients with lesions in the perisylvian cortico-subcortical or thalamic region of the right hemisphere produced linguistically correct but semantically loose writing. The behaviour was initiated by subtle prompting and continued semiautomatically. A possible mechanism underlying this hypergraphia is discussed.
answer:
Hypergraphia: a right hemisphere syndrome.

question:
Abstract: In reconstructing the anterior cruciate ligament (ACL) it is important to place the inner ends of the drill channels correctly, to get the ACL into an isometric position. Anatomic studies demonstrate the value of a modified surgical technique using a special drill guide for standardized positioning of the anterior cruciate substitute. The drill guide consists of a metal frame with one adjustable and one fixed guide tube. Drilling is done from the anteromedial aspect of the tibia, upwards, through the joint space and the femur in a straight line, both channels being drilled in a single procedure. The precision of guided drilling was superior to that of free-hand drilling in positioning the ligament in the correct anatomic place.
answer:
A modified technique for anterior cruciate ligament (ACL) surgery using a new drill guide for isometric positioning of the ACL.

question:
Abstract: In a double-blind, placebo-controlled study the analgesic efficacy of the combination of a tricyclic antidepressant and morphine was investigated. One of two tricyclic antidepressants (either amitriptyline, a relatively selective serotonin uptake inhibitor or desipramine, a relatively selective noradrenaline uptake inhibitor) or a placebo, was given for 1 week prior to surgery, followed by a single postoperative dose of morphine. Desipramine, but not amitriptyline, both increased and prolonged morphine analgesia. Neither tricyclic antidepressant reduced dental postoperative pain in the absence of morphine. We propose that desipramine enhances opiate analgesia by enhancing a noradrenergic component that contributes to endogenous opioid-mediated analgesia systems.
answer:
Desipramine enhances opiate postoperative analgesia.