Disclosed is directed to a method for restoring bone in an animal comprising: accessing a site to be restored; loading a syringe body with a flowable bone graft material; mating the syringe body with a delivery tube; positioning the delivery tube at the site to be restored; using a syringe piston to advance the said material into the delivery tube; using the syringe piston or a plunger that mates with the delivery tube after removal of the syringe body to deliver the bone graft to the site at a force of less than 50 lbs. extrusion force; wherein said material is at least 75% porous with a mineral to polymer ratio of 80:20.

A bone screw assembly includes an anchor portion and a head portion, such as a rod-receiving portion, movably mounted to the anchor portion to allow for controlled angulation between the anchor portion and the head portion. The anchor portion is pivotable in one or more selected directions about an axis relative to the head portion. A restriction member, which may be a rod seat, prevents the anchor portion from pivoting in one or more different directions about another axis relative to the head portion and/or a spinal fixation element received in the head portion. The restriction member may be inserted in the head portion to control direction that the anchor portion pivots relative to the head portion. The restriction member may also serve as a compression member and/or rod seat for seating a spinal rod coupled to the bone screw assembly.

Spinal tissue distraction devices that include a member which has a pre-deployed configuration for insertion between tissue layers and a deployed configuration in which the member, by change of configuration, forms a support structure for separating and supporting layers of spinal tissue.

Spinal tissue distraction devices that include a member which has a pre-deployed configuration for insertion between tissue layers and a deployed configuration in which the member, by change of configuration, forms a support structure for separating and supporting layers of spinal tissue.

Thoracic/lumbar and cervical spinous process staples which staple/fuse adjacent spinous processes are disclosed. Thoracic/lumbar transverse process staples which staple/fuse adjacent transverse processes are also disclosed. Each embodiment has upper and lower claws connected by a ratchet spring mechanism, along with a multiplicity of bone fastener prongs attached to the upper and lower claws. Two sets of prongs on each staple claw are spaced by a distance approximately equal to the distance separating adjacent spinous or transverse processes so as to facilitate stapling/fusion of two adjacent processes. Also disclosed are staple prongs with multiple perforations which enable incorporation of bone fusion material thereby facilitating stapling/fusion of spinal elements.

The present invention relates to a method, such as a surgical method for assisting a surgeon for placing screws in the spine using a robot attached to a passive structure. The present invention also related to a method, such as a surgical method for assisting a surgeon for removing volumes in the body of a patient using a robot attached to a passive structure and to a device to carry out said methods. The present invention further concerns a device suitable to carry out the methods according to the present invention.

The present invention is a bone growth stimulating and promoting cytokine type biological implant preferably comprising PTH coated with a controlled release biodegradable coating that is implanted preferably in the concave side of a scoliotically curved spine in combination with a bone growth inhibiting type biological implant preferably comprising methotrexate or like anti-metabolite coated with a controlled release biodegradable coating that is implanted preferably in the convex side of a scoliotically curved spine. The insertion of the biological implant is highly non-invasion, especially as compared to more conventional spine surgical methods, and the biological implant does not decrease spinal mobility or spinal range of motion.

The present invention is a bone growth stimulating and promoting cytokine type biological implant preferably comprising PTH coated with a controlled release biodegradable coating that is implanted preferably in the concave side of a scoliotically curved spine in combination with a bone growth inhibiting type biological implant preferably comprising methotrexate or like anti-metabolite coated with a controlled release biodegradable coating that is implanted preferably in the convex side of a scoliotically curved spine. The insertion of the biological implant is highly non-invasion, especially as compared to more conventional spine surgical methods, and the biological implant does not decrease spinal mobility or spinal range of motion.

A device may include an outer sleeve with a hollow interior, and an inner sleeve with a hollow interior to couple axially and slidingly. The outer sleeve may include an outer central body, an outer proximal end part and an outer distal end part integrally connected to one another, and an outer channel extending along the entire outer proximal end part and along a substantial portion of the outer central body. The inner sleeve may include an inner central body, an inner proximal end part and an inner distal end part integrally connected to one another, and an inner channel extending along the entire inner proximal end part and along a substantial part of the inner central body. The inner sleeve may include, in the inner proximal end of the inner sleeve, a lateral engagement element, and an axial engagement element for releasably engaging a surgical screw.

A spinal stabilization system and method are provided for treating a patient's spinal column, for maintaining preselected spacing and movement between adjacent vertebrae in a spinal column, and for providing overall stability thereto. The system includes an interlaminar member positioned in the space intermediate a first vertebra and the vertebrae positioned immediately below and adjacent to the first vertebra. The interlaminar member is operatively connected to an adjustable support structure and cooperates therewith to maintain the preselected spacing between adjacent vertebrae and to provide overall stability to the spinal column.