The Surgical Management of Ossification of the Posterior Longitudinal Ligament in 43 North Americans

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Abstract
From 1989 to 1992, 43 of 174 (25%) consecutive North Americans had cervical ossification of the posterior Iongiudinal ligament (OPLL). After the non-random selection of anterior corpectomies and fusions, anterior discectomies adn fusions, or five-level laminectomies, the preoperative and postoperative outcomes of the OPLL patients were compared using Ranawal's neurological classes and grades. Patients who had anterior OPLL surgery exhibited superior outcomes compared with those who had laminectomies. Specifically, the 20 patients who underwent corpectomles and had the most severe preoperative deficits had the best postoperative results; the 13 discectomy patients, with the least severe preoperative deficits, had intermediate recoveries, whereas the ten laminectomy patients, with intermdiate preoperative neurologic dysfunction, had biased future surgical choices to favor more anterior approaches.

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