Patent ID: 8585711

Claim:
An instrument for recording position of a first dialable component of a trial implant relative to a predetermined datum on trial implant, the instrument comprising: a base assembly configured to support the trial implant so that datum is in a predetermined orientation; a fixture supported on said base assembly, said fixture including an alignment tool configured to engage the first dialable component of the trial implant when the trial implant is supported by said base assembly; and a locking assembly configured to record angular orientation of said alignment tool relative to said fixture with said alignment tool engaged with the first dialable component, and to replicate the recorded angular orientation with the alignment tool and a second dialable component, wherein: said fixture includes a domed element defining an opening for extension of said alignment tool therethrough; and said locking assembly includes a guide member defining a bore for extension of said alignment tool therethrough, said guide member defining a spherical surface for nested engagement with said domed element.