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Clinical importance of the minimal cancellous diameter of lower thoracic and lumbar vertebral pedicles
Author(s) -
Islam Cihangir,
Güzel Mehmet Bahaddin,
Sakul Bayram Ufuk
Publication year - 1996
Publication title -
clinical anatomy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 71
eISSN - 1098-2353
pISSN - 0897-3806
DOI - 10.1002/(sici)1098-2353(1996)9:3<151::aid-ca2>3.0.co;2-j
Subject(s) - medicine , lumbar , fixation (population genetics) , cancellous bone , anatomy , lumbar vertebrae , thoracic vertebrae , nuclear medicine , surgery , population , environmental health
Transpedicular spinal fixation is a widely used method in vertebral surgery, but it suffers from complications due to mismatches between the screw and pedicle. Therefore, information on minimal cancellous (MCD) and minimal external diameters (MED) of the pedicle is highly important for vertebral surgery. To determine these diameters and their ratios, 2,808 measurements of 1,404 pedicles of 702 human vertebrae were made from Th11 to L5. We found that the mean ratio of MCD to MED was 72.2%, MCD to vertical diameter (VD) was 41.7%, and MCD to transverse diameter (TD) was 62.2% in all levels. We recommend that these results be considered prior to pedicular fixation operations and design of new implantable devices. © 1996 Wiley‐Liss, Inc.