Abstract
Zygomatic osteotomy has been advocated for the treatment of difficult skull base lesions. To study the relative increase in exposure gained by removing portions of the zygoma, we have performed dissections on five fresh-frozen and lightly-perfused cadavers (10 sides, total). Angles of approach to the basilar apex, posterior clinoid, and troclear nerve were quantified with the aid of a Stealth Station frameless stereotactic system, with which we were able to record instrument position at the circumferential limits of exposure. Most of the additional exposure gained in the removal of the zygoma is due to removal of the orbital rim and frontozygomatic process, while less additional exposure is gained in removal of the entire zygomatic arch. Based upon these dissections, as well as our operative experience, we have concluded that osteotomy of the entire zygoma is rarely necessary. Only the most extensive skull base lesions and those involving the infratemporal fossa are likely to require osteotomy of the complete zygoma.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 32 |
| Number of pages | 1 |
| Journal | Skull Base Surgery |
| Volume | 8 |
| Issue number | SUPPL. 1 |
| State | Published - 1998 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Clinical Neurology
Cite this
Limited zygomatic osteotomy for skull base lesions : A cadaveric study. / Schwartz, Marc S.; Morgan, Michael A.; Kellogg, Jordi X.; Anderson, Gregory; McMenomey, Sean O.; Delashcm, Johnny B.
In: Skull Base Surgery, Vol. 8, No. SUPPL. 1, 1998, p. 32.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Limited zygomatic osteotomy for skull base lesions
T2 - A cadaveric study
AU - Schwartz, Marc S.
AU - Morgan, Michael A.
AU - Kellogg, Jordi X.
AU - Anderson, Gregory
AU - McMenomey, Sean O.
AU - Delashcm, Johnny B.
PY - 1998
Y1 - 1998
N2 - Zygomatic osteotomy has been advocated for the treatment of difficult skull base lesions. To study the relative increase in exposure gained by removing portions of the zygoma, we have performed dissections on five fresh-frozen and lightly-perfused cadavers (10 sides, total). Angles of approach to the basilar apex, posterior clinoid, and troclear nerve were quantified with the aid of a Stealth Station frameless stereotactic system, with which we were able to record instrument position at the circumferential limits of exposure. Most of the additional exposure gained in the removal of the zygoma is due to removal of the orbital rim and frontozygomatic process, while less additional exposure is gained in removal of the entire zygomatic arch. Based upon these dissections, as well as our operative experience, we have concluded that osteotomy of the entire zygoma is rarely necessary. Only the most extensive skull base lesions and those involving the infratemporal fossa are likely to require osteotomy of the complete zygoma.
AB - Zygomatic osteotomy has been advocated for the treatment of difficult skull base lesions. To study the relative increase in exposure gained by removing portions of the zygoma, we have performed dissections on five fresh-frozen and lightly-perfused cadavers (10 sides, total). Angles of approach to the basilar apex, posterior clinoid, and troclear nerve were quantified with the aid of a Stealth Station frameless stereotactic system, with which we were able to record instrument position at the circumferential limits of exposure. Most of the additional exposure gained in the removal of the zygoma is due to removal of the orbital rim and frontozygomatic process, while less additional exposure is gained in removal of the entire zygomatic arch. Based upon these dissections, as well as our operative experience, we have concluded that osteotomy of the entire zygoma is rarely necessary. Only the most extensive skull base lesions and those involving the infratemporal fossa are likely to require osteotomy of the complete zygoma.
UR - http://www.scopus.com/inward/record.url?scp=33747793345&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33747793345&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:33747793345
VL - 8
SP - 32
JO - Journal of Neurological Surgery, Part B: Skull Base
JF - Journal of Neurological Surgery, Part B: Skull Base
SN - 2193-6331
IS - SUPPL. 1
ER -