Anatomic measurements for the endoscopic modified lothrop procedure

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Background: The aim of this study was to introduce preoperative radiographic frontal recess and sinus anatomic measurements to assist in the selection of patients considered for the modified Lothrop procedure. Methods: Data were collected from sagittally reconstructed computed tomography (CT) scans of seven cadaver heads. Four anatomic parameters for measurement were defined as follows: (1) thickness of the nasal beak (desirable <10 mm); (2) midsagittal distance from nasal beak to skull base (adding 1 and 2 provides the anterior-posterior (AP) space at the cephalad margin of the frontal recess; desirable, ≥ 15 mm); (3) accessible dimension (in a parasagittal plane through the frontal ostium; the distance between two lines drawn parallel to the plane of the anterior skull base and perpendicular to the line of the insertion of the nasal endoscope during surgery; the posterior line is drawn at the skull base and the anterior line is drawn at the posterior margin of the nasal beak; the distance between the lines indicates the space available for instrumentation; desirable, >5 mm); (4) AP dimension of each frontal sinus. Results: The average and the range of each parameter measured were as follows: (1) nasal beak thickness = 8.0 mm (5.0-10.4 mm); (2) nasal beak-skull base = 7.9 mm (2.5-14.1 mm); (3) accessible dimension, 6.1 min (0.9-9.6 mm); (4) AP diameter of the frontal sinus, 9.7 mm (5.2-14.1 mm). Four specimens were considered candidates for modified Lothrop and three were not. Conclusion: Preoperative radiographic frontal recess and sinus anatomic measurements may assist in the selection of patients considered for the endoscopic modified Lothrop procedure.

Original languageEnglish (US)
Pages (from-to)293-296
Number of pages4
JournalAmerican Journal of Rhinology
Volume19
Issue number3
StatePublished - May 1 2005

Fingerprint

Frontal Sinus
Beak
Nose
Patient Selection
Skull Base
Cadaver
Head
Tomography

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Anatomic measurements for the endoscopic modified lothrop procedure. / Farhat, Firas T.; Figueroa Ortiz, Ramon E; Kountakis, Stilianos E.

In: American Journal of Rhinology, Vol. 19, No. 3, 01.05.2005, p. 293-296.

Research output: Contribution to journalArticle

@article{bde9b65283494f18a90b51676ef11dc3,
title = "Anatomic measurements for the endoscopic modified lothrop procedure",
abstract = "Background: The aim of this study was to introduce preoperative radiographic frontal recess and sinus anatomic measurements to assist in the selection of patients considered for the modified Lothrop procedure. Methods: Data were collected from sagittally reconstructed computed tomography (CT) scans of seven cadaver heads. Four anatomic parameters for measurement were defined as follows: (1) thickness of the nasal beak (desirable <10 mm); (2) midsagittal distance from nasal beak to skull base (adding 1 and 2 provides the anterior-posterior (AP) space at the cephalad margin of the frontal recess; desirable, ≥ 15 mm); (3) accessible dimension (in a parasagittal plane through the frontal ostium; the distance between two lines drawn parallel to the plane of the anterior skull base and perpendicular to the line of the insertion of the nasal endoscope during surgery; the posterior line is drawn at the skull base and the anterior line is drawn at the posterior margin of the nasal beak; the distance between the lines indicates the space available for instrumentation; desirable, >5 mm); (4) AP dimension of each frontal sinus. Results: The average and the range of each parameter measured were as follows: (1) nasal beak thickness = 8.0 mm (5.0-10.4 mm); (2) nasal beak-skull base = 7.9 mm (2.5-14.1 mm); (3) accessible dimension, 6.1 min (0.9-9.6 mm); (4) AP diameter of the frontal sinus, 9.7 mm (5.2-14.1 mm). Four specimens were considered candidates for modified Lothrop and three were not. Conclusion: Preoperative radiographic frontal recess and sinus anatomic measurements may assist in the selection of patients considered for the endoscopic modified Lothrop procedure.",
author = "Farhat, {Firas T.} and {Figueroa Ortiz}, {Ramon E} and Kountakis, {Stilianos E}",
year = "2005",
month = "5",
day = "1",
language = "English (US)",
volume = "19",
pages = "293--296",
journal = "American Journal of Rhinology and Allergy",
issn = "1945-8924",
publisher = "OceanSide Publications Inc.",
number = "3",

}

TY - JOUR

T1 - Anatomic measurements for the endoscopic modified lothrop procedure

AU - Farhat, Firas T.

AU - Figueroa Ortiz, Ramon E

AU - Kountakis, Stilianos E

PY - 2005/5/1

Y1 - 2005/5/1

N2 - Background: The aim of this study was to introduce preoperative radiographic frontal recess and sinus anatomic measurements to assist in the selection of patients considered for the modified Lothrop procedure. Methods: Data were collected from sagittally reconstructed computed tomography (CT) scans of seven cadaver heads. Four anatomic parameters for measurement were defined as follows: (1) thickness of the nasal beak (desirable <10 mm); (2) midsagittal distance from nasal beak to skull base (adding 1 and 2 provides the anterior-posterior (AP) space at the cephalad margin of the frontal recess; desirable, ≥ 15 mm); (3) accessible dimension (in a parasagittal plane through the frontal ostium; the distance between two lines drawn parallel to the plane of the anterior skull base and perpendicular to the line of the insertion of the nasal endoscope during surgery; the posterior line is drawn at the skull base and the anterior line is drawn at the posterior margin of the nasal beak; the distance between the lines indicates the space available for instrumentation; desirable, >5 mm); (4) AP dimension of each frontal sinus. Results: The average and the range of each parameter measured were as follows: (1) nasal beak thickness = 8.0 mm (5.0-10.4 mm); (2) nasal beak-skull base = 7.9 mm (2.5-14.1 mm); (3) accessible dimension, 6.1 min (0.9-9.6 mm); (4) AP diameter of the frontal sinus, 9.7 mm (5.2-14.1 mm). Four specimens were considered candidates for modified Lothrop and three were not. Conclusion: Preoperative radiographic frontal recess and sinus anatomic measurements may assist in the selection of patients considered for the endoscopic modified Lothrop procedure.

AB - Background: The aim of this study was to introduce preoperative radiographic frontal recess and sinus anatomic measurements to assist in the selection of patients considered for the modified Lothrop procedure. Methods: Data were collected from sagittally reconstructed computed tomography (CT) scans of seven cadaver heads. Four anatomic parameters for measurement were defined as follows: (1) thickness of the nasal beak (desirable <10 mm); (2) midsagittal distance from nasal beak to skull base (adding 1 and 2 provides the anterior-posterior (AP) space at the cephalad margin of the frontal recess; desirable, ≥ 15 mm); (3) accessible dimension (in a parasagittal plane through the frontal ostium; the distance between two lines drawn parallel to the plane of the anterior skull base and perpendicular to the line of the insertion of the nasal endoscope during surgery; the posterior line is drawn at the skull base and the anterior line is drawn at the posterior margin of the nasal beak; the distance between the lines indicates the space available for instrumentation; desirable, >5 mm); (4) AP dimension of each frontal sinus. Results: The average and the range of each parameter measured were as follows: (1) nasal beak thickness = 8.0 mm (5.0-10.4 mm); (2) nasal beak-skull base = 7.9 mm (2.5-14.1 mm); (3) accessible dimension, 6.1 min (0.9-9.6 mm); (4) AP diameter of the frontal sinus, 9.7 mm (5.2-14.1 mm). Four specimens were considered candidates for modified Lothrop and three were not. Conclusion: Preoperative radiographic frontal recess and sinus anatomic measurements may assist in the selection of patients considered for the endoscopic modified Lothrop procedure.

UR - http://www.scopus.com/inward/record.url?scp=21644482244&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=21644482244&partnerID=8YFLogxK

M3 - Article

C2 - 16011137

AN - SCOPUS:21644482244

VL - 19

SP - 293

EP - 296

JO - American Journal of Rhinology and Allergy

JF - American Journal of Rhinology and Allergy

SN - 1945-8924

IS - 3

ER -