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).
