TABLE I.
Study | Cases (n) | Mechanism of injury | Air—bone gap (dB) | Otoscopy | Management |
---|---|---|---|---|---|
Harris & Butler1 | 4 | Head trauma | 5−30 | Manubrial fracture on neumatic otoscopy (cases 1−3) | Conservative (cases 1−3) |
Ear striking water | 5−15 | Surgical (case 4) | |||
Unknown | 0−20 | ||||
Scuba diving | 0−40 | ||||
Pedersen2 | 2 | Digital manipulation of ear canal (both cases) | 5−30 | Normal | Surgical (both cases) |
10−15 | Free motion of manubrium with immobile lateral process | ||||
Iurato & Quaranta3 | 3 | Jet of water striking ear | 5−25 | Fracture of manubrium (all cases) | Conservative (all cases) |
Unknown | 5−15 | ||||
Digital manipulation of ear canal | 10−20 | ||||
Applebaum & Goldin4 | 1 | Unknown | 15−25 | Poorly mobile malleus | Surgical |
Orabi5 | 1 | Digital manipulation of ear canal | 20−25 | Normal | Conservative |