scholarly journals Role of Cartilage as a Graft Material for Tympanic Membrane and in Middle Ear Reconstruction

2015 ◽  
Vol 04 (02) ◽  
pp. 66-72 ◽  
Author(s):  
Anant Chouhan ◽  
Bhuvnesh Kumar Singh ◽  
Praveen Chandra Verma
Keyword(s):  
Tympanic Membrane ◽  
Middle Ear ◽  
Ear Reconstruction ◽  
Graft Material ◽  
Middle Ear Reconstruction

scholarly journals Are suspensory ligaments important for middle ear reconstruction?

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0255821
Author(s):  
Eileen Y. Brister ◽  
Robert H. Withnell ◽  
Pavel Shevchenko ◽  
Claus-Peter Richter
Keyword(s):  
Middle Ear ◽  
Significant Role ◽  
Sound Transmission ◽  
Ossicular Chain ◽  
Ear Reconstruction ◽  
Hearing Sensitivity ◽  
Wide Range ◽  
Middle Ear Reconstruction ◽  
The Impact

As the resolution of 3D printing techniques improves, the possibility of individualized, 3-ossicle constructions adds a new dimension to middle ear prostheses. In order to optimize these designs, it is essential to understand how the ossicles and ligaments work together to transmit sound, and thus how ligaments should be replicated in a middle ear reconstruction. The middle ear ligaments are thought to play a significant role in maintaining the position of the ossicles and constraining axis of rotation. Paradoxically, investigations of the role of ligaments to date have shown very little impact on middle ear sound transmission. We explored the role of the two attachments in the gerbil middle ear analogous to human ligaments, the posterior incudal ligament and the anterior mallear process, severing both attachments and measuring change in hearing sensitivity. The impact of severing the attachments on the position of the ossicular chain was visualized using synchrotron microtomography imaging of the middle ear. In contrast to previous studies, a threshold change on the order of 20 dB across a wide range of frequencies was found when both ligaments were severed. Concomitantly, a shift in position of the ossicles was observed from the x-ray imaging and 3D renderings of the ossicular chain. These findings contrast with previous studies, demonstrating that these ligaments play a significant role in the transmission of sound through the middle ear. It appears that both mallear and incudal ligaments must be severed in order to impair sound transmission. The results of this study have significance for middle ear reconstructive surgery and the design of 3D-printed three-ossicle biocompatible prostheses.

Problems in Alloplastic Middle Ear Reconstruction

1992 ◽  
Vol 112 (2) ◽  
pp. 322-327 ◽  
Author(s):  
A. W. Blayney ◽  
K. R. Williams ◽  
J.-P. Erre ◽  
T. H. J. Lesser ◽  
M. Portmann
Keyword(s):  
Middle Ear ◽  
Ear Reconstruction ◽  
Middle Ear Reconstruction

43: Results of Total Middle Ear Reconstruction Surgery for Postoperative Modified Radical Operation Cases

1996 ◽  
Vol 115 (2) ◽  
pp. P174-P175
Author(s):  
Takao Yabe ◽  
Kazuoki Kodera ◽  
Jun-Ichi Suzuki ◽  
Shigehiko Itoh
Keyword(s):  
Middle Ear ◽  
Ear Reconstruction ◽  
Radical Operation ◽  
Reconstruction Surgery ◽  
Middle Ear Reconstruction

Clinical investigation of flat panel CT following middle ear reconstruction: a study of 107 patients

2013 ◽  
Vol 24 (3) ◽  
pp. 587-594 ◽  
Author(s):  
K. Zaoui ◽  
J. Kromeier ◽  
M. Neudert ◽  
T. Beleites ◽  
T. Zahnert ◽  
...  
Keyword(s):  
Middle Ear ◽  
Clinical Investigation ◽  
Ear Reconstruction ◽  
Flat Panel ◽  
Flat Panel Ct ◽  
Middle Ear Reconstruction

Histopathological differences in bony destruction of malleus and incus following mastoidectomy

2010 ◽  
Vol 124 (11) ◽  
pp. 1162-1166
Author(s):  
T Sasaki ◽  
A Xu ◽  
K Ito ◽  
S-I Ishimoto ◽  
T Yamasoba ◽  
...  
Keyword(s):  
Middle Ear ◽  
Operation Time ◽  
Ear Reconstruction ◽  
Lamellar Bone ◽  
Bone Area ◽  
Bony Destruction ◽  
Time Period ◽  
Middle Ear Reconstruction ◽  
Direct Inspection

AbstractObjectives:Upon direct inspection of surgically removed ossicles from the ears of patients with long-term post-mastoidectomy cavity problems, the extent of malleus destruction often appears greater in patients with a longer duration of cavity problems, whereas the extent of incus destruction does not appear to correlate with the duration of cavity problems. This study aimed to investigate this impression.Materials and methods:As a result of total middle-ear reconstruction, 41 ossicles (21 malleus and 20 incus bones) were obtained from 31 patients with post-mastoidectomy cavity problems. The ossicles were examined histopathologically, and the proportion of lamellar bone area to total bone area (expressed as percentage lamellar bone) was measured. We also calculated the inter-operation time, i.e. the time period between the previous mastoidectomy and the recent total middle-ear reconstruction; this parameter was used as an approximate measure of the duration of the patient's cavity problem. Correlations between percentage lamellar bone and inter-operation time were calculated for the two ossicles.Results:The range of inter-operation times was seven to 65 years. We observed a correlation between percentage lamellar bone and inter-operation time for malleus bones (r = −0.512, p < 0.05), but not for incus bones.Conclusion:These results were in agreement with our pre-study impressions.

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