<prompt> Most common congenital middle ear abnormality:Absent footplate of stapesFixation of footplate of stapesOval window abnormalityAbsent long process of incus  <response>: b Fixation of footplate of stapesRef. Scott Brown, 8th ed., Vol 2, page 108According to Teunissen and Cremers classification, the most common congenital anomaly of the middle ear is fixation of footplate of stapes. 