Indications; Contraindications - smith&nephew RT-PLUS Surgical Technique

Indications

The principal preoperative planning factor is the correct diagnosis. It has to be determined
whether the bone and stability situation require the implantation of a constrained prosthesis.
The main indications for implantation of RT-PLUS™ Modular are:
High-grade joint destruction with considerable loss of function and requirement for addi-
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tional stabilization with longer stems and reconstruction of bone defects
Severe joint instability that predictably cannot be corrected by suitable bone reconstruction
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(bone grafts) or soft-tissue intervention
Marked contractures and axial displacements of more than 15°–20°
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Failure after surface replacement (e.g., infection, loosening) – revision of a primary prosthesis
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Trauma – induced femoral or tibial fractures
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Due to the design, it is possible to switch with relatively little effort, even intraoperatively,
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from the TC-PLUS™ knee system to the RT-PLUS™ Modular knee system, since the resections
and prosthesis sizes are matching

Contraindications

Contraindications are:
Acute or chronic, local or systemic infections (or in the case of a corresponding anamnesis)
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Severe muscle, nerve or vascular diseases that endanger the affected extremity
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Lacking bone substance or inadequate bone quality that endangers a stable seating of the
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prosthesis
Severe adiposity
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All concomitant diseases that may endanger the function of the implant. These include in
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particular extreme insuffi ciency of the knee extensor mechanism, which can lead to exces-
sive joint distortion; or severe adiposity, which can lead to a dorsal impingement, which may
uncouple the components. In these cases it may be advisable to use a coupled hinge or a
tumour prosthesis
Patient hypersensitivities or allergies to the materials used
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Strenuous physical activity (e.g., competitive sports, hard physical work)
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See also instructions on the package insert.
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