A five year follow-up of 605 cases of the MCCL (metal-cancellous cementless Lübeck) total hip prosthesis.

The porous surface of the MCCL prosthesis macroscopically resembles spongy bone, with a porous depth of up to 10 mm, the width of the pores measuring 1-2 mm, with reticular spaces forming an intercommunicating system. The superficial porous surface and the implant stem are combined in a single structure. The standard prosthesis is made up of four components; an acetabulum in cobalt-chrome-molybdenum alloy, an interposed layer of polyethylene, a ceramic head and a stem in cobalt-chrome-molybdenum alloy, the shape of which is anatomically matched to the proximal femur. What emerges from the present study is the possibility of using right and left stems, each available in six sizes. The ceramic head may be attached to the neck of the femoral stem, which may be long, average, or short. An "extra-long" metal head is also available.