To evaluat and analysis the clinical effect of arthroscopic femoral osteoplasty for mixed-type femoroacetabular impingememt (FAI) .

Thirty-three patients suffering mixed FAI were selected from 2016 to 2018, including 12 males and 21 females. The patients age were (38±3) years, and all the patients were confirmed by physical examination, X-ray and CT. The patients were followed-up at one months, three months, six months, one year and post-operative every year. Outcomes were measured with impingement tests, range of motion (ROM)of hip, α angle, visual analogue scale (VAS) and modified Harris hip score at final follow-up by paired sample t test.

At the final follow-up, impingememt tests were all negative, the range of flexion increased compared with preoperative (t=-13.58, P<0.01), the range of internal rotation in a position of 90°flexion increased (t=-13.22, P<0.01), the Harris hip score improved(t=-23.56, P<0.01), the α angle decreased(t=15.08, P<0.01), VAS score decreased (t=17.05, P<0.01), all the differences were statistically significant.

The clinical effect of hip arthroscopic surgery for mixed-type femoroacetabular impingememt is significant, which can effectively relieve the pain of patients, improve the range of motion of hip joint, and improve the joint function.