| 摘要 |
Shoulder prosthesis, including a stem provided to be inserted into a canal of the humerus shaft, a neck and a head supported by the neck. The neck is provided with two holes ( 1, 2 ) for anchoring screws ( 1 a , 2 a), namely a first hole ( 1 ) for a lateral anchoring screw ( 1 a) and a second hole ( 2 ) for an anterior anchoring screw ( 2 a). The lateral anchoring screw is provided to attach a first tubercle laterally to the neck and the anterior anchoring screw is provided to attach a second tubercle anterior to the neck. A system for implanting a shoulder prosthesis, comprises a targeting arm attachable to the neck of the prosthesis and is provided with guide means for guiding anchoring screws ( 1 a , 2 a) to be screwed into at least a lateral hole ( 1 ) and an anterior hole ( 2 ) in the neck. The targeting arm is also provided for holding a trial prosthesis.
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