Hybrid Total Knee Arthroplasty Revisited: Midterm Followup of Hybrid versus Cemented Fixation in Total Knee Arthroplasty

Table 4

Tibial radiolucencies.

No. of tibial radiolucencies	Hybrid	Cemented	𝑃 value
Mean tibia radiolucency size (cm)	6 (3.1%)	5 (4.5%)	0.54
Tibia Zone 1 lucency	0.61	0.72	0.64
Tibia Zone 2 lucency	6 (3.1%)	3 (2.7%)	1
Tibia Zone 3 lucency	1 (0.5%)	0	1
Tibia Zone 4 lucency	0	0
Tibia Zone 5 lucency	0	2 (1.8%)	0.13
Tibia Zone 6 lucency	0	0
Tibia Zone 7 lucency	0	0
	0	0

Follow-up radiographs were evaluated for radiolucencies under the tibial component. Mean size (cm) as well as the location, based on the Knee Society total knee arthroplasty roentgenographic evaluation and scoring system [19], is shown. *Statistically significant difference (𝑃<0.05).