| CPC A61F 2/3609 (2013.01) [A61F 2/32 (2013.01); A61F 2/34 (2013.01); A61F 2002/3611 (2013.01)] | 5 Claims |

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1. A prosthetic hip implant comprising:
a femoral prosthetic component including:
(a) a stem configured for connecting the femoral prosthetic component of the prosthetic hip implant to a femur bone of a patient;
(b) a femoral head structure connected to the stem and configured for articulation with a bearing surface for transmitting forces between said femur bone and said bearing surface, wherein the femoral head structure includes concentric grooves which are defined at least around a portion of the femoral head structure and which are spaced apart from one another and orientated parallel with respect to an equatorial region of the femoral head structure; and
a plurality of ball bearings rotatably arranged between the femoral head structure and said bearing surface for transmitting forces between the femoral head structure and said bearing surface, wherein the plurality of ball bearings are rotatably mounted within said concentric grooves.
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