[Clinical effects of tranexamic acid in arthroscope for femoroacetabular impingement]

To evaluate the clinical effects of tranexamic acid in arthroscope for femoroacetabular impingement.

Totally 34 patients (34 hips) with femoroacetabular impingement underwent hip arthroscopy from June 2016 to December 2018, were randomly divided into two groups named as tranexamic acid group and control group, 17 patients in each group. In TXA group, there were 10 males and 7 females, aged from 20 to 49 years old with an average of (32.1±7.6) years old;15 mg/kg TXA was intravenous drops before operation incision performed at 10 min. In control group, there were 11 males and 6 females, aged from 20 to 49 years old with an average of (30.9±6.2) years old;100 ml normal saline was intravenous drops before operation incision performed at 10 min. Introopertaive and total bloodloss between two groups were compared. Visual analogue scale (VAS) at 3 and 7 days after opertaion were used to evaluate pain relief of hip joint. Modified Harris Hip Score(mHHS) of hip joint at 3, 6, 9 and 12 weeks after oeprtaion were applied to evaluate clinical effects.

All patients were obtained follow up over 12 weeks. Incision healed well without infection and deep vein thrombosis. There were no statistical difference in opertaion time bewteen two groups(P>0.05) . Total blood loss and introopertaive blood loss in TXA group were (0.47±0.20) L and (0.18±0.08) L, while (0.66±0.22) L and (0.24±0.01) L in control group;there were statical differences between two groups (P<0.05). There were no dierences in VAS before opertaion and 7 days after opertaion between two groups (P>0.05);VAS at 3 days after opertaion in TXA group was 2.35±1.12 and 3.12±0.70 in control group, and had difference (P< 0.05). There were significance in VAS at 3 and 7 days after opertaion compared with preopertaive between two groups (P< 0.05). Postopertaive mHHS in TXA group at 3 and 6 weeks were 87.72±1.95 and 91.92±2.32, respectively;while 84.08±1.21 and 89.77±3.30 in control group;there were difference between two groups at 3 and 6 weeks after operation (P<0.05);there were no significant difference in mHHS between two groups at 9 and 12 weeks after operation(P>0.05).

Preoperative application of tranexamic acid could effectively reduce blood loss in arthroscopy for femoroacetabular impingement, thereby improving surgical field of vision, reducing difficulty of surgical operation, which could promote early and rapid rehabilitation of hip function.