Period concerning the operation
Parameter Pre-THA 30 min 1st day 3rd day 7th day 14th day
R (min) 15.3 (13.1-17.3) 11.8 (9.3-14.5)* 13.5 (0.8-16.0) 13.4 (10.7-16.0)* 12.2 (10.2-16.3)* 13.0 (9.6-17.1)*
Ang (deg) 38.2 (33.0-44.3) 46.4 (40.4-54.2)* 42.0 (34.1-49.2) 43.9 (36.4-56.6) 49.8 (35.3-60.4)* 48.4 (40.9-56.8)*
МА (mm) 56.5 (52.9-59.4) 56.7 (52.5-60.2) 60.0 (57.4-62.0)* 67.6 (64.0-73.2)* 70.5 (67.9-73.5)* 67.4 (66.0-71.1)*
CI -0.2 (-1.0-0.7) 0.2 (-0.3-1.0)* 0.5 (-0.2-1.1)* 1.9 (1.1-2.6)* 2.3 (1.6-3.0)* 1.8 (1.3-2.7)*
Ly 30 (%) 0.5 (0.0-1.4) 0.6 (0.1-1.3) 0.4 (0.0-1.2) 1.1 (0.5-2.5)* 0.5 (0.1-1.5) 0.5 (0.1-1.3)
Note: *Differences are significant as compared with the preoperative values (p<0.05). Thromboelastography analysis – R: reaction time, Ang: alpha angle (the slope of the tracing, indicating the rapidity of fibrin build-up and cross-linking), МА: maximal amplitude, CI: Coagulation Index, Ly 30: percent lysis 30 min after MA is reached.
Table 1: Coagulation and lysis in whole blood before and after hip arthroplasty.