Separately , 4 factors and each different 2 levels were adopted in treatment , named acupuncture timing ( factor A : A , acute stage , A2 adhesion stage ) , acupoint combination ( factor B : B , local acupoints , B2 local acupoints and distal acupoints along meridians ) , filiform needling and warm needling therapy ( factor C : C1 acupuncture with filiform needle , CZ acupuncture with filiform needle and warm needling therapy ) and positive functional exercise ( factor D : D1 without positive functional exercise , D2 with positive functional exercise ) .