Clin Orthop Surg.  2011 Mar;3(1):77-80. 10.4055/cios.2011.3.1.77.

Navigation-Assisted Total Knee Arthroplasty for the Knee Retaining Femoral Intramedullary Nail, and Distal Femoral Plate and Screws

• Kim KK
• Heo YM
• Won YY
• Lee WS

• KMID: 999464
• DOI: http://doi.org/10.4055/cios.2011.3.1.77

Abstract

Proper ligament balancing, restoration of the mechanical axis and component alignment are essential for the success and longevity of a prosthesis. In conventional total knee arthroplasty (TKA), an intramedullary guide is used to improve the alignment. An extramedullary guide can be used in cases of severe femoral bowing or intramedullary nailing but its use is more subjective and relies on the surgeon's experience. This paper reports two successful cases of navigation-assisted TKA for severe right knee osteoarthritis retaining a femoral intrameullary nail, and left knee osteoarthritis retaining a distal femoral plate.

Keyword

Femoral fracture; Computer-assisted navigation; Total knee arthroplasty

MeSH Terms

Aged
Arthroplasty, Replacement, Knee/*methods
Bone Plates
Bone Screws
Female
Femoral Fractures/surgery
Fracture Fixation, Intramedullary
Humans
Osteoarthritis, Knee/*surgery
Surgery, Computer-Assisted/*methods

Figure

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  Fig. 1 Preoperative (A) anteroposterior and (B) lateral radiographs.

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  Fig. 2 Radiograph showing mechanical axis deviation. An angle was formed between the mechanical axes of the femur and tibia.

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  Fig. 3 (A) 6.5 mm anchoring screw and tracker (B) 3.0 mm anchoring pins and tracker.

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  Fig. 4 Postoperative (A) anteroposterior and (B) lateral radiographs.

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  Fig. 5 Preoperative (A) anteroposterior and (B) lateral radiographs.

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  Fig. 6 Postoperative (A) anteroposterior and (B) lateral radiographs.

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  Fig. 7 Radiograph showing a restoration of the mechanical axis of the left lower extremity.

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