Direct measurement of the round window niche dimensions using a 3-dimensional moulding technique - A human cadaveric temporal bone study

TY - JOUR

T1 - Direct measurement of the round window niche dimensions using a 3-dimensional moulding technique - A human cadaveric temporal bone study

AU - Shakeel, M.

AU - Spielmann, P. M.

AU - Jones, S. E.

AU - Hussain, S. S. M.

PY - 2015/12

Y1 - 2015/12

N2 - Objectives: To directly measure the various dimensions of the RWN focusing on the bony overhang and the vertical height between the free margin of the bony overhang and floor of the niche.Design: Laboratory-based anatomical study using formalin-preserved human cadaveric temporal bones.Setting: Temporal Bone laboratory, Department of Otolaryngology University of Dundee Medical School & Ninewells Hospital, Dundee, UK.Participants: NA.Main outcome measures: Three measurements were carried out (i) the depth of the round window niche extending from the free margin of the bony overhang to the fundus; (ii) vertical height from the free margin of the overhang to the floor of the niche (entrance) and (iii) the antero-posterior (AP) dimension of the niche.Results: Based on mould technique, the three dimensions were calculated as follows: mean bony overhang = 2.1 mm (range 1.9-2.4 mm), height of RWN = 2.0 mm (1.8-2.15 mm) and AP length = 4.0 mm (3.3-4.95 mm).Conclusions: Our data demonstrate that the mean dimension of the bony overhang superior to the RWM is 2.1 mm.

AB - Objectives: To directly measure the various dimensions of the RWN focusing on the bony overhang and the vertical height between the free margin of the bony overhang and floor of the niche.Design: Laboratory-based anatomical study using formalin-preserved human cadaveric temporal bones.Setting: Temporal Bone laboratory, Department of Otolaryngology University of Dundee Medical School & Ninewells Hospital, Dundee, UK.Participants: NA.Main outcome measures: Three measurements were carried out (i) the depth of the round window niche extending from the free margin of the bony overhang to the fundus; (ii) vertical height from the free margin of the overhang to the floor of the niche (entrance) and (iii) the antero-posterior (AP) dimension of the niche.Results: Based on mould technique, the three dimensions were calculated as follows: mean bony overhang = 2.1 mm (range 1.9-2.4 mm), height of RWN = 2.0 mm (1.8-2.15 mm) and AP length = 4.0 mm (3.3-4.95 mm).Conclusions: Our data demonstrate that the mean dimension of the bony overhang superior to the RWM is 2.1 mm.

UR - https://www.scopus.com/pages/publications/84954430318

U2 - 10.1111/coa.12438

DO - 10.1111/coa.12438

M3 - Article

C2 - 25891637

AN - SCOPUS:84954430318

SN - 1749-4478

VL - 40

SP - 657

EP - 661

JO - Clinical Otolaryngology

JF - Clinical Otolaryngology

IS - 6

M1 - 12438

ER -