Patent ID: 8715282

Claim:
A rotational correction system comprising: an implant comprising a first section and a second section, the implant having a rotatable permanent magnet disposed in a housing of the first section, the rotatable permanent magnet mechanically connected to a nut operatively coupled to the second section of the implant; a keyed portion interposed between the nut and one or more non-linear grooves disposed on an inner surface of the housing, wherein the keyed portion comprises ball bearings interposed between one or more non-linear grooves disposed on an exterior surface of the nut and the one or more non-linear grooves on the inner surface of the housing; and an external adjustment device comprising at least one rotatable magnet configured to rotate the rotatable permanent magnet of the implant, wherein rotation of the rotatable permanent magnet of the implant in a first direction effectuates a clockwise change in the rotational orientation of the first section relative to the second section and wherein rotation of the rotatable permanent magnet of the implant in a second direction effectuates a counter-clockwise change in the rotational orientation of the first section relative to the second section.