Variable angle humeral components

A variable angle locking system comprising:

• a humeral component;
• a humeral stem couplable to the humeral component;
• a set of stackable washers cooperating to create a common through-hole, the common through-hole defining a common axis therethrough;
• a cap having a threaded circumference configured to engage an interior circumferential thread of one of the washers in the set of stackable washers;
• and
• a screw including a head portion having helical threads and an elongated shaft portion extending from the head portion, the screw being configured to lock the humeral component to the humeral stem at more than one angle relative to the common axis as the screw is advanced through the common through-hole;
• wherein at least one of the washers in the set of stackable washers is a spring washer.

A variable angle locking system comprising:

• a set of stackable washers cooperating to create a common through-hole, wherein at least one of the washers in the set of stackable washers is a spring washer;
• a cap having a threaded circumference configured to engage an interior circumferential thread of one of the washers in the set of stackable washers;
• and
• a screw including a head portion having helical threads and an elongated shaft portion extending from the head portion, the screw being configured to lock a humeral component to a humeral stem at more than one angle relative to a common axis defined by the common through-hole as the screw is advanced therethrough;
• wherein the cap is configured to cooperate with one of the washers in the set of stackable washers to collectively define a spherical cavity that is adapted to receive the head portion of the screw and at least a portion of the set of stackable washers.