The present invention relates to a joint implant (1； 100) for implantation into a bone. The implant comprises a stem (10) having a proximal section (11) and a distal section (15), at least two grooves (12) substantially extending in the longitudinal direction of the stem (10), a first coating (14) at least partially covering the surface (14) of said grooves (12) and a ridge (13), wherein the ridge is formed in between adjacent grooves (12) , respectively. Further the apex surface (13a) of the ridge (13) has an average surface roughness that is lower than the average surface roughness of the first coating (14).
