| intramedullary tractotomy | Division of the descending fibres of the trigeminal tract in the medulla. Synonym: intramedullary tractotomy, Sjoqvist tractotomy. (05 Mar 2000) |
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| intramedullary | 1. Within the bone marrow. 2. Within the spinal cord. 3. Within the medulla oblongata. (05 Mar 2000) |
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| intramedullary anaesthesia | Rarely used method of general anaesthesia by injection of intravenous anaesthetic agent(s) into the medullary canal of long bones. Synonym: intraosseous anaesthesia. (05 Mar 2000) |
| intramedullary mass | <radiology> Ependymoma, astrocytoma, syrinx, post-radiation myelopathy, haematoma (posttraumatic or AVM) (12 Dec 1998) |
| intramedullary reamer | A rasp used for shaping the intramedullary portion of the metaphysis prior to the insertion of an appliance or a prosthesis. (05 Mar 2000) |
| anterolateral tractotomy | Division of the anterolateral quadrant of the spinal cord to section the spinothalamic tract. Synonym: anterolateral tractotomy, spinal tractotomy, spinothalamic cordotomy. (05 Mar 2000) |
| Walker tractotomy | A mesencephalic spinothalamic tractotomy. (05 Mar 2000) |
| Schwartz tractotomy | A medullary spinothalamic tractotomy. (05 Mar 2000) |
| pyramidal tractotomy | May be mesencephalic (pedunculotomy or crusotomy), medullary (medullary pyramidotomy), or spinal (spinal pyramidotomy). (05 Mar 2000) |
| Sjoqvist tractotomy | Division of the descending fibres of the trigeminal tract in the medulla. Synonym: intramedullary tractotomy, Sjoqvist tractotomy. (05 Mar 2000) |
| spinal tractotomy | Division of the anterolateral quadrant of the spinal cord to section the spinothalamic tract. Synonym: anterolateral tractotomy, spinal tractotomy, spinothalamic cordotomy. (05 Mar 2000) |
| spinothalamic tractotomy | May be spinal (cordotomy), medullary (Schwartz tractotomy), or mesencephalic (Walker tractotomy). (05 Mar 2000) |
| tractotomy | Interruption of a nerve tract in the brainstem or spinal cord. Origin: L. Tractus, tract, + G. Tome, incision (05 Mar 2000) |
| trigeminal tractotomy | Division of the descending fibres of the trigeminal tract in the medulla. Synonym: intramedullary tractotomy, Sjoqvist tractotomy. (05 Mar 2000) |