Prognostic Scoring Systems in Ossiculoplasty: A Comprehensive Review and Introduction of a Novel Predictive Index

Ossiculoplasty remains a challenging surgical procedure, with outcomes heavily influenced by diverse anatomical and pathological factors. Over the decades, numerous scoring systems have been developed to predict the prognosis of ossiculoplasty, each emphasizing different variables such as ossicular status, middle ear environment, and surgical history. This paper provides a comprehensive review of the evolution of prognostic scoring systems, including Austin's original ossicular classification, Bellucci's otorrhea staging, the Middle Ear Risk Index (MERI), the Ossiculoplasty Outcome Parameter Staging (OOPS), and the recently introduced Ear Environment Risk (EER) scale. While these systems have significantly contributed to preoperative assessment, each presents notable limitations in encompassing all variables affecting surgical success. Therefore, the aim of this paper is to provide a review of the ossiculoplasty prognostic scores and show the benefits, innovations and gaps associated with each. To address these gaps, a novel, modified scoring system is proposed, incorporating previously overlooked but clinically significant factors such as tympanic membrane status, type of tympanoplasty, ossicular replacement material, CT scan findings, and the presence of complicated ear conditions. By synthesizing elements from historical scores with updated clinical insights, the proposed system aims to provide a more holistic and predictive framework for preoperative evaluation. Future multicenter studies are encouraged to validate the efficacy and prognostic power of this new scoring system, with the goal of improving surgical planning and patient counseling in ossiculoplasty.