Short-term differences in anterior knee pain and clinical outcomes between rotating and fixed platform posterior stabilized total knee arthroplasty with a new femoral component design

Table 1 Radiographic alignment at two years

Radiographic alignment at two years, mean (SD)	FP	RP	P value
Anatomical axis	174.7° (1.69°)	175.30° (2.32°)	0.428
Mechanical axis	179.49° (2.47°)	181.10° (2.41°)	0.838
Anatomic lateral distal femoral angle (aLDFA)	86.60° (3.5°)	85.70° (2.74°)	0.960
Medial proximal tibial-angle (MPTA)	89.84° (2.81°)	90.31° (1.37°)	0.084
Posterior femoral-prosthetic angle	90.3° (2.97°)	88.51° (2.89°)	0.753
Posterior tibial-prosthetic angle	88.9° (1.9°)	89.07° (2.12°)	0.790
Anterior femoral-prosthetic angle	8.2° (3.02°)	6.42° (2.11°)	0.262
Patellar tilt angle alpha	25.64° (7.87°)	26.81° (4.84°)	0.407
Patellar tilt angle gamma	1.32° (3.3°)	1.87° (3.5°)	0.805

FP: Fixed platform; RP: Rotating platform.