WHY POSTERIOR CRUCIATE-RETAINING AND SUBSTITUTING TOTAL KNEE REPLACEMENTS HAVE SIMILAR RANGES OF MOTION

2006 ◽  
Vol 88 ◽  
pp. 182-188
Author(s):  
WAYNE M. GOLDSTEIN ◽  
J. RAAB ◽  
THOMAS F. GLEASON ◽  
JILL JASPERSON BRANSON ◽  
KIMBERLY BERLAND
Keyword(s):  
Cruciate Retaining ◽  
Total Knee Replacements ◽  
Knee Replacements ◽  
Total Knee

scholarly journals Non-Traumatic Anterior Dislocation of a Total Knee Replacement Associated with Neurovascular Injury

2009 ◽  
Vol 91 (8) ◽  
pp. 658-659 ◽  
Author(s):  
Joseph Aderinto ◽  
Allan E Gross ◽  
Bryan Rittenhouse
Keyword(s):  
Total Knee Replacement ◽  
Knee Replacement ◽  
Anterior Dislocation ◽  
Cruciate Retaining ◽  
Total Knee Replacements ◽  
Neurovascular Injury ◽  
Knee Replacements ◽  
Total Knee ◽  
Posterior Direction

Prosthetic total knee replacements rarely dislocate. When dislocation does occur, it is usually in a posterior direction in association with a posterior stabilised, cruciate-sacrificing prosthesis. Neurovascular injury is unusual. In this report, we describe a case of anterior dislocation of a cruciate-retaining total knee replacement in a 67-year-old woman. The dislocation occurred in the absence of overt trauma and resulted in severe neurovascular injury.

The influence of tibial tray design on the wear of fixed-bearing total knee replacements

2008 ◽  
Vol 222 (8) ◽  
pp. 1289-1293 ◽  
Author(s):  
A Galvin ◽  
L M Jennings ◽  
H M McEwen ◽  
J Fisher
Keyword(s):  
Fixed Bearing ◽  
Posterior Stabilized ◽  
Cruciate Retaining ◽  
Tibial Tray ◽  
Wear Rates ◽  
Total Knee Replacements ◽  
Locking Mechanism ◽  
Significant Difference ◽  
Knee Replacements ◽  
Total Knee

Debris-induced osteolysis due to surface wear is a potential long-term problem in total knee replacements (TKRs). Wear between the tibial tray and ultra-high molecular weight polyethylene insert is thought to contribute to the wear. This study investigated the influence of tibial tray design on the wear of fixed-bearing TKRs. Specifically, this study investigated the influence of the material's surface finish and design characteristics of the locking mechanism of the tibial tray on the wear in fixed-bearing knees for both cruciate-retaining (CR) and posterior-stabilized designs. A new fixed-bearing tibial tray design using Co—Cr and with an improved locking mechanism significantly reduced polyethylene wear from 22.8 ± 6.0 mm3 per 106 cycles to 15.9 ± 2.9 mm3 per 106 cycles compared with a previous titanium alloy tray with a CR design. The wear rates were similar to those of a fixed-bearing insert clamped into a tibial tray, suggesting that the decrease in wear was due to a reduction in backside wear. There was no significant difference between the wear rates of a cruciate-retaining design and a posterior-stabilized design under the two kinematic conditions tested.

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