| locked bite | An occlusion in which the cusp arrangement restricts lateral excursions. (05 Mar 2000) |
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| locked facets | Complete dislocation of one or both articular processes, usually with overriding of the inferior articular process of the vertebra above into a position anterior to the superior articular process of the vertebra below. Synonym: locked facets. (05 Mar 2000) |
| locked knee | A condition in which the knee lacks full extension and flexion because of internal derangement, usually the result of a torn medial meniscus. (05 Mar 2000) |
| locked-in syndrome | <syndrome> Basis pontis infarct resulting in tetraplegia, horizontal ophthalmoplegia, dysphagia, and facial diplegia with preserved consciousness; caused by basilar artery occlusion. Synonym: pseudocoma. (05 Mar 2000) |