Table 3.

Multi-Axial Correction (MAC) system radiographic data for mechanical axis deviation (MAD), tibial–femoral angle (TFA), medial proximal tibial angle (MPTA), and posterior proximal tibial angle (PPTA) measured at pre-operative, fixator removal, and final follow-up visits

Parameter	Pre-operative	Fixator removal	Final follow-up
Mechanical axis deviation (mm)	75.5a (29.2); 95% CI (60.98–90.02)	31.8a (19.1); 95% CI (20.3–43.3)	20.5a (12.7); 95% CI (7.2–33.8)
Tibial–femoral angle (degree)	21.2b (8.3); 95% CI (17.1–25.3)	5.9b (10.7); 95% CI (0.36–11.4)	8.0b (4.1); 95% CI (4.2–11.8)
Medial proximal tibial angle (degree)	68.8 (13.5); 95% CI (62.1–75.5)	83.8 (11.8); 95% CI (77.3–90.3)	83.7 (8.1); 95% CI (75.2–92.2)
Posterior proximal tibial angle (degree)	78.6 (8.0); 95% CI (72.4–84.7)	71.8 (8.8); 95% CI (65.5–78.0)	72.3 (3.9); 95% CI (66.0–78.5)

SD in parentheses

^aMedial

^bVarus