Clinical Study

Short Term Recovery of Function following Total Knee Arthroplasty: A Randomised Study of the Medial Parapatellar and Midvastus Approaches

Table 3

Mean (std) values of the pre- and postoperative function measures for the MP and MV groups. value for the effect of the type of surgery.

Before surgery6  weeks3 months6 months value

Knee extensor strength (Nm/kg)MP0.52 (0.22)0.43 (0.13)0.48 (0.09)0.61 (0.25)0.269
MV0.45 (0.18)0.51 (0.25)0.52 (0.23)0.64 (0.25)

Active flexion (°)MP109 (13)95 (15)103 (6)104 (7)0.283
MV105 (18)90 (13)98 (12)100 (14)

TUG (s)MP10.5 (2.3)11.0 (2.7)9.5 (2.1)9.5 (2.8)0.387
MV11.5 (2.9)11.5 (2.5)11.4 (3.0)10.5 (2.1)

WOMAC pain (max 20)MP9.4 (3.2)5.5 (2.5)4.3 (2.8)3.8 (3.1)*0.907
MV8.6 (3.1)5.1 (3.6)4.7 (4.3)3.2 (3.6)

WOMAC stiffness (max 8)MP4.8 (1.8)2.8 (1.8)2.7 (1.7)2.5 (1.4)0.799
MV3.9 (1.5)2.7 (1.5)1.9 (1.2)2.6 (1.3)

WOMAC function (max 96) MP30.3 (10.1)16.7 (10.8)14.4 (9.8)14.6 (11.1)0.964
MV27.1 (11.0)14.8 (10.5)13.9 (13.0)13.8 (10.6)

Nonparametric Mann-Whitney test.