Variations in reciprocal distances between the ethmoidal sinus, sphenoidal sinus and posterior orbit : measurement on CTscans

Hayakawa, Kimiko; Yoshikawa, Hiroshi; Suzuki, Miyako; Yokoi, Hidenori; Hosokawa, Akira; Hagiwara, Akiko; Ichikawa, Ginichirou

doi:10.14789/pjmj.49.89

Cited by 3 publications

(5 citation statements)

References 1 publication

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“…Obtaining a flap with good blood supply facilitates integration with the adjacent tissue, thereby potentially decreasing the occurrence of necrosis following the reconstruction of radiation-exposed sockets or sockets that received treatment multiple times. 19 It can also prevent the subsequent contraction of the anophthalmic socket or exposure of implants, as observed in the present study. Vascularized flaps or temporalis muscle transfer, along with custom-made printed conformers, could be used in cases where previous surgeries have failed.…”

Section: Discussionsupporting

confidence: 69%

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Reconstruction of Anophthalmic Sockets With Pedicled Nasoseptal Flap

Gonzalias-Duque

Ordóñez

Montaño

et al. 2023

Ophthalmic Plastic &Amp; Reconstructive Surgery

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Purpose: Patients who undergo eye removal often present with orbital soft-tissue insufficiency and contraction of the eye sockets. The most commonly used reconstruction strategy is grafting the orbit with free grafts, which is associated with the drawback of harvesting tissue from an unconnected site. This study describes the use of the vascularized nasoseptal flap in the reconstruction and enlargement of the contracted anophthalmic cavity in patients with severe or recurrent contracted eye sockets and evaluates its efficacy.Methods: A sphenopalatine-pedicled flap from the nasal septum was harvested and mobilized into the anophthalmic orbit for the reconstruction, coverage, and enlargement of the socket in 17 patients with anophthalmic socket syndrome. Data regarding the demographics, preoperative status, postoperative findings, follow-up, outcomes, dates of mutilant and reconstructive surgery, and relevant clinical or imaging were collected.Results: Krishna´s classification was used to assess the postoperative outcomes. The final rating improved in all patients at a median follow-up duration of 35 months. A greater impact was observed in patients who underwent reconstructive surgery before nasoseptal flap creation. Two minor complications occurred; however, major surgical intervention was not required. Implant extrusion was observed in 2 patients.Conclusions: The novel strategy of applying nasoseptal flaps in the reconstruction of anophthalmic sockets results in improved socket grading and a low rate of recurrence (socket contracture or implant extrusion), and complications. The vascular nature of the flap makes it suitable for use in complex cases.

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Section: Discussionsupporting

confidence: 69%

“…16,17 However, imaging and anatomical studies have shown that the distance between the nasal cavity and the orbit is shorter than the dimensions of the flap. [18][19][20] Thus, the dimension of the flap was sufficient for fornix reconstruction and implant coverage. The flap size was sufficient for socket reconstruction in all cases.…”

Section: Methodsmentioning

confidence: 99%

Reconstruction of Anophthalmic Sockets With Pedicled Nasoseptal Flap

Gonzalias-Duque

Ordóñez

Montaño

et al. 2023

Ophthalmic Plastic &Amp; Reconstructive Surgery

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“…Ikeda et al 3 previously reported that the distance between the anterior and posterior walls of the sphenoid sinus of Japanese adults was approximately 26 mm, and Hayakawa et al 4 stated that it was approximately 25 mm in men and 22 mm in women. Our present results indicate approximately a 10‐mm shorter distance than those mentioned in those two reports.…”

Section: Discussionmentioning

confidence: 99%

“…This is why in this study all of our measurements of the various dimensions of the sphenoid sinus were made from the sphenoid ostium. Although there are several exhaustive reports about the sphenoid sinus, [2][3][4][5]7 they do not mention the relationship between the sphenoid ostium and the carotid artery, optic canal, and/or the skull base.…”

Section: Discussionmentioning

confidence: 99%

“…The sphenoid ostium is located approximately 1 cm superior to the posteroinferior end of the superior turbinate and is the best surgical landmark for an endoscopic sphenoidotomy 2 . Although some anatomical reports deal with the sphenoid sinus and its surrounding struc‐tures, 3–5 these reports are not concerned with anatomical features from a surgeon's viewpoint. But recently, as computed tomography (CT) with the multiplanar reconstruction technique has advanced, it has become possible to observe and measure CT images three‐dimensionally in a way that meets surgeons' needs 6 …”

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confidence: 99%

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Surgical anatomy of the sphenoid sinus on the CT using multiplanar reconstruction technique

Enatsu¹,

Takasaki²,

Kase³

et al. 2008

Otolaryngol.--head neck surg.

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OBJECTIVE: To clarify the three-dimensional anatomical features of the sphenoid sinus and its surrounding structures as are relevant to performing an endoscopic sphenoidotomy. METHODS: Various dimensions of 224 CT images of the sphenoid sinus and surrounding structures from 122 Japanese adult patients were measured using the multiplanar reconstruction technique. RESULTS: The mean distance from the nasal sill to the sphenoid ostium was nearly 66 mm, and that from the sphenoid ostium to the posterior wall of the sphenoid sinus was nearly 14 mm. The angles from the sphenoid ostium to both the carotid artery and the optic canal varied among the patients. The sphenoid ostium was located at almost the vertical midpoint of the anterior wall of the sphenoid sinus. CONCLUSION: The present study provides anatomical information about the sphenoid sinus and surrounding structures that is essential for avoiding complications in performing an endoscopic sphenoidotomy.

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Analysis of Sphenoid Sinus and Surrounding Structures Using Multidetector Computed Tomography

Shin

Jang

Baek

2012

Korean J Otorhinolaryngol-Head Neck Surg

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Background and ObjectivesZZSphenoid sinus is surrounded by several important structures and this can make sphenoid sinus surgeries difficult. The aim of this study was to clarify the anatomical features of the sphenoid sinus with its surrounding structures based on 3-dimensional multidetector computed tomography. Subjects and MethodZZWe obtained the sagittal reconstruction images of the sphenoid sinus from of 110 participants and measured various distances in the sphenoid sinus. In addition, we analyzed the impact of anatomical variation on the results of measured distances, such as presence of Onodi cell (Onodi type vs. non-Onodi type) and the location of sphenoid ostium corresponding to the level of sella floor (superior type vs. inferior type).ResultsZZIn the Onodi type, the mean distance from the sphenoid ostium to the roof of sphenoid sinus (5.81±1.12 mm vs. 10.31±2.90 mm, p=0.001) and the mean length of sphenoid sinus roof (4.52±1.00 mm vs. 9.89±4.17 mm, p=0.001) were significantly shorter than those in the non-Onodi type. In superior type, the mean distance from the sphenoid ostium to the floor of sphenoid sinus (12.44±2.63 mm vs. 9.90±2.31 mm, p＜0.001) and that from sphenoid ostium to the posterior wall of sphenoid sinus (13.44±3.27 mm vs. 20.38±7.63 mm, p＜0.001) were significantly longer compared with those in the inferior type. However, the mean distance from the sphenoid ostium to the roof of sphenoid sinus was shorter (7.49±1.86 mm vs. 10.51±3.03 mm, p＜0.001).ConclusionZZThe present study provides anatomical information about sphenoid sinus with important surgical distance measured between the sphenoid ostium and the surrounding structures, which is essential to avoid the complications during sphenoid surgery.

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Variations in reciprocal distances between the ethmoidal sinus, sphenoidal sinus and posterior orbit : measurement on CTscans

Cited by 3 publications

References 1 publication

Reconstruction of Anophthalmic Sockets With Pedicled Nasoseptal Flap

Reconstruction of Anophthalmic Sockets With Pedicled Nasoseptal Flap

Surgical anatomy of the sphenoid sinus on the CT using multiplanar reconstruction technique

Analysis of Sphenoid Sinus and Surrounding Structures Using Multidetector Computed Tomography

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