Abstract: A pelvic obliquity correction instrument and methods of use are provided. The pelvic obliquity correction instrument includes a first engagement arm for engaging a portion of a spinal fixation system where the first engagement arm is adjustably coupled to a handle assembly. The pelvic obliquity correction instrument also includes a second engagement arm for engaging a second portion of the spinal fixation system. A surgeon exerts force on a first grip at a first end of the handle assembly and a second grip at a second end of the handle assembly to reposition a patient's pelvic bone. The pelvic obliquity correction instrument may provide a surgeon with greater precision, control and torque when rotating a patient's pelvic bone with respect to a superior portion of the patient's spine.

Abstract: Implantable devices and methods for correcting spinal deformities or degeneration are disclosed. The devices and methods have particular application in the spinopelvic region and on the sacrum or ilium. In one embodiment, a cross connector is provided and can include a cross member with a connector head slidably disposed thereon. The cross member can be adapted for attachment to one or more anchoring elements, and the sliding connector head can include a first receiving portion defined by an opening through the connector head for receiving the cross member, and a second receiving portion defined by a recess between first and second opposed arms for receiving a spinal fixation element, such as a spinal rod. A guide channel can optionally be provided on the cross member for guiding the movement of the sliding connector head.

Abstract: A system for monitoring strain as an indicator of biological conditions, such as spinal fusion, glucose levels, spinal loading, and heart rate. The system includes an inter-digitated capacitor sensor, and RF transmitter, and an associated antenna, all of which are microminiature or microscopic in size and can be implanted in a biological host such as a human or animal. An inductively coupled power supply is also employed to avoid the need for implantation of chemical batteries. Power is provided to the sensor and transmitter, and data is transmitted from the sensor, when an external receiving device, such as a handheld RF ID type receiver, is placed proximate the location of the implanted sensor, transmitter and inductively coupled power supply. The implanted sensor, transmitter and inductively coupled power supply can be left in place permanently or removed when desired.