Bojrab Universal Prosthesis Design

The ideal prosthesis must be biocompatible, able to optimize sound conduction based on material and weight, and easily trimmed. The prosthesis must not extrude or move once placed. Failures with reconstruction occur from movement at either the lateral

Table 19-4 Anatomic Variants that May Be Encountered in the Middle Ear and Solutions to the Problem: Stabilization of prosthesis

Location

Solution

Lateral Malleus

Tympanic membrane

Medial

Stapes capitulum Stapes no capitulum Footplate normal Footplate abnormal Narrow Center ridge Tilted

Notch

Slightly rounded head Cartilage cap Middle ear glue

Prosthesis stem hole Alter stem size Small with tissue ingrowth Small with tissue stabilization

Artificial Heart Valves MechanismBojrab Porp

FIGURE 19-2 (A,B) The use of the Bojrab universal prosthesis design.

or medial connection. Dense HA has the advantage of being bioactive, allowing epithelial covering, and being osteoconductive. To allow for variations in size intraoperatively, the original composite Bojrab universal prosthesis has a stem that can be trimmed with a head design that is biocompatible against the tympanic membrane (Fig. 19-2). The design of this prosthesis allows use in multiple situations: as an incus-interposition, as a PORP, and as a TORP, depending on the ossicles present (Table 19-5).

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Responses

  • hannes
    Is bojarab universal prosthesis compatible with mri?
    10 months ago
  • anne
    Is bojrab universal mri compatible?
    10 months ago

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