Preliminary Analysis of Causes of Titanium Prosthesis Extrusion after Ossicular Chain Reconstruction
ZHOU Yongqing
LI Xiaoming
SHAO Yongliang
LI Zhen
LI Jianhong
CHEN Xuzhen
WANG Ling
Abstract：[Abstrcut]Objective To understand the cause of extrusion of Spigger titanium prosthesis following ossicular chain re-construction to improve treatment outcomes. Methods Two hundred and six cases of ossicular chain reconstruction using the Spigger titanium prosthesis by a single ear surgeon from February of 2007 to July of 2013 were reviewed. Both PORP (n=157 cases) and TORP (n=49 cases) prostheses were used in the 206 cases. Results Of the 206 cases, extrusion occurred in 12 cases (5.8%). Inflammation during the first three weeks after the surgery caused extrusion in 3 cases. In 9 cases the Titanium prosthesis extruded gradually over six months after the surgery. The extrusion from the middle ear after surgery appeared to be related to the following factors:1) excessively high prosthesis positioning, 2) slanting prosthesis placement, 3) gradual car-tilage displacement from being too small or too thin, 4) gradual decrease in middle ear air cells size, and 5) design defects in the Spigger titanium prosthesis. Conclusions Implant material, middle ear inflammation in the early stage after surgery, sur-geon skill levels, middle ear air cell size change after surgery are all possible causes for prosthesis extrusion. For the Spigger titanium prosthesis, some design defects may also contribute to the extrusion after surgery.
Keywords：SurgeryMiddle earTitanium prosthesisExtrusion
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 448-451 )