Use of bone compaction in total knee arthroplasty

This study compared the effects of bone preparation on tibial stem stability in total knee arthroplasty. Six pairs of fresh-frozen tibias underwent implantation of an 18 × 75-mm press-fit stem (minus the tibial tray). The standard press-fit technique was performed creating a cavity 17 mm in diameter...

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Bibliographic Details
Published in:The Journal of arthroplasty 1996-09, Vol.11 (6), p.743-749
Main Authors: Channer, Mark A., Glisson, Richard R., Seaber, Anthony V., Vail, Thomas P.
Format: Article
Language:English
Subjects:
Biomechanical Phenomena
bone compaction
Humans
Knee Prosthesis
Male
Methods
Middle Aged
reaming
Tibia - physiology
Tibia - surgery
tibial component stability
total knee arthroplasty
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Summary:This study compared the effects of bone preparation on tibial stem stability in total knee arthroplasty. Six pairs of fresh-frozen tibias underwent implantation of an 18 × 75-mm press-fit stem (minus the tibial tray). The standard press-fit technique was performed creating a cavity 17 mm in diameter. For the bone compaction technique, stainless-steel dilators were machined ranging in diameter from 6 to 16 mm in 2-mm increments. The technique consisted of using the dilators and a mallet to create a compacted tunnel in a sequential manner to 16 mm in diameter followed by implantation of the stem. The specimens were mounted on a materials testing machine and loads were applied in both planes: anteroposterior and mediolateral. A preconditioning load of 100 N was applied followed by a second 100-N load from which the stiffness (N/mm) of implantation was calculated. The stability of the tibial stems implanted by compaction averaged 84.7% greater when compared with the press-fit stems ( P < .017 by multivariate analysis).
ISSN:0883-5403
1532-8406
DOI:10.1016/S0883-5403(96)80015-5