Disclosed are embodiments of medical implants containing an integrated propulsor system. Additionally, methods of insertion are also disclosed.

A tool adapted for use with a bone plate assembly includes a driver with an engagement portion configured to engage a locking element, and a tubular holder. The driver may be configured to extend with the engagement portion through the tubular holder, and may be axially movable and rotatable within the holder. The holder may have a radial slot adapted for insertion of the locking element. The holder may include a portion with an internal thread for cooperation with an external thread of the locking element. The locking element may be used with a polyaxial bone anchor.

In some embodiments, a spinal stabilization system may be formed in a patient using quick-connect sleeve assemblies. Each quick-connect sleeve assembly can be coupled to a bone fastener assembly in a fast and intuitive way. In one embodiment, a quick-connect sleeve assembly has a detachable member and a movable member. Both members engage a collar of the bone fastener assembly. In one embodiment, the engagement can be locked via one or more locking features to facilitate screwing a bone fastener of the bone fastener assembly onto a vertebral body in a minimally invasive surgical procedure. Each quick-connect sleeve assembly has a low profile and is particularly shaped for minimally invasive entry.

Modular surgical instruments and related methods are disclosed herein, e.g., for performing rod reduction, derotation, and/or set screw insertion during spinal surgery. An exemplary system can include an instrument body configured to couple to a bone anchor assembly to provide a modular platform for carrying out various steps of a surgical procedure. For example, the instrument body can receive a reduction instrument therethrough for reducing a spinal rod into the bone anchor assembly. A derotation instrument can be attached to the reduction instrument for performing derotation maneuvers or applying other manipulation forces. A modular driver or handle adapter can be attached to the reduction instrument and/or to the derotation instrument to facilitate rod reduction. Any of the instrument body, the reduction instrument, and the derotation instrument can include a working channel therethrough. A set screw or closure mechanism, and a driver instrument for applying the set screw or closure mechanism to the bone anchor assembly, can be inserted through the working channel.

An implant system, alignment guide, bone fusion system and surgical method for correction of a flat foot or rocker-bottom deformity, such as a Charcot foot. The implant system includes a bone implant and an elongate member. The bone implant includes a proximal end, a distal end, a hole along a longitudinal axis, and at least one opening intersecting the hole. The elongate member includes a first end with a head portion, a second end with a coupling mechanism, and an opening along a longitudinal axis. The coupling mechanism of the elongate member engages the at least one opening to couple the bone implant to the elongate member.

A process of bone creation between adjacent vertebrae uses an intervertebral stabilizing screw, which includes a main body with an axial through hole, a distal thread and at least one fill hole. A hollow proximal secondary body of the screw includes an external thread a travel stop. The process includes inserting the main body until the distal thread is secured to an upper vertebrae of the adjacent vertebrae such that the at least one fill hole is in inside of the disk, inserting the proximal body until reaching to the limit stop such that the proximal body is threaded inside of a pedicle and secured to a lower vertebrae of the adjacent vertebrae, and injecting a bone remodeling composition into inside of the disk through the axial hole and the at least one fill hole.

A cylindrical shaft may be gripped with an apparatus including a housing having an axis and an inner surface with multiple asymmetric cam surfaces, a proximal end including a means to rotate the housing, and a distal end having an opening configured to receive the cylindrical shaft, at least two cylindrical gripping members configured to grip the cylindrical shaft, where each cylindrical gripping member contacts a corresponding asymmetric cam surface at a first rest position, and a rotatable frame which holds each pair of cylindrical gripping members at a fixed angular orientation relative to each other. The rotatable frame is configured to rotate upon insertion of the cylindrical shaft into a space defined by the gripping members so that each gripping member moves away from the axis of the housing along a first portion of the corresponding asymmetric cam surface. After insertion of the cylindrical shaft, the housing is configured to rotate so as to cause each gripping member to move toward the axis of the housing along the corresponding asymmetric cam surface.

A screw implant is provided for the distraction, fusion, or compression of two adjacent bone structures or two adjacent bone fragments. The implant is a fully threaded screw with a headless proximal end having a drive engagement feature and a blunt distal end for insertion into bone or related tissue. The implant has roughened and porous surfaces throughout and is fully coated with hydroxyapatite and/or tri-calcium phosphate to allow for bone in-growth. The implant may have uniform low pitch cortical threads, or variable pitch threads, with low pitch cortical threads on one end and larger pitch cancellous threads on the other end. The implant may be used for the distraction of spinal vertebrae. The implants may have a cannulation channel and fenestrations.

A provisional engagement feature for selectively connecting a fastener such as a screw to a driving tool, the fastener incorporating a head with a recess extending therein and a projection contained within the recess for engagement with a corresponding engagement feature and/or selective locking feature of the driving tool.

Disclosed herein are ratchet retracting handles and related methods for automatically retracting a stylet during insertion of a bone anchor.