الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Chronic otitis media commonly affects bones of the middle ear causing disconnection and erosion of the ossicular chain. More commonly the long process of the incus which is vulnerable, defective or missing in 60% of chain defects with intact malleus and stapes causing defective incudostapedial joint and conductive hearing loss.There are a lot of cases suffering from conductive hearing loss due to ossicular chain defects. In our study we present an option for ossicular reconstruction using bone cement, as an alternative for the existing options for ossiculoplasty. There are many types of grafts used in ossiculoplasty with each having its advantages and disadvantages. For example, there are two types of prostheses total ossicular replacement prosthesis (TORP) & partial ossicular replacement prosthesis (PORP), these types of prostheses have high cost compared with bone cement which in average cost a lot less, Half of the ossiculoplasty failures results from prosthesis displacement requiring revision surgery.While the most common indication for bone cement ossiculoplasty is incudo-stapedial rebridging, Bone cement also could be used in different indications such as; securing ossiculoplasty prostheses, incus subluxation and between the malleus and stapes in absence of the incus. Our study done on total population of 20 patients with ossicular chain defects, the follow up period ranged from 3 months to 1 year, the PTA of the patients is compared pre-operatively & post-operatively to assess the effectiveness of ossiculoplasty using bone cement. In our study we present GIC as suitable and effective solution for ossicular disconnection repair. The main indication for surgery in most cases in our study was mainly restoring the sound transformer mechanism, minimizing air bone gap. In our study 75% of study population achieved a good hearing result of an air bone gap ≤ 20 dB which is comparable to previous published in literature.