Tether clamping assemblies, such as clamping assemblies used to clamp a tether about a spinal feature to assist in spinal fixation, and related methods and systems. In some embodiments, the assembly may comprise a tether configured to engage a bone or other anatomical feature, an inner coupling piece, and an outer coupling piece. A first passage may be at least partially defined by an inner surface of the outer coupling piece and an outer surface of the inner coupling piece. The first passage may be configured such that the tether can be clamped in between the inner surface and the outer surface to allow the tether to move through the first passage in a first direction and lock the tether in place. The inner and outer surfaces preferably differ in surface roughness to facilitate automatic or self-locking of the tether in the assembly.

A ratcheted spinal device including a variable-length member including a ratchet mechanism that has an operative configuration that allows a change in length of the variable-length member in one direction and prevents a change in length of the variable-length member in an opposite direction, wherein the variable-length member includes polyaxial-joint attachment members for attachment to bone, which permit pivoting movement of the attachment members about more than one pivoting axis.

Methods for clamping a tether about a spinal or other anatomical feature. In some implementations, a tether may be extended in a loop around an anatomical feature of a spine. A spinal fixation rod may be coupled with an inner coupling piece of a clamping assembly, such as by way of a slot formed in the inner coupling piece. The inner coupling piece may be nestably coupled within an outer coupling piece of the clamping assembly. A first end of the tether may be passed through a passage of the clamping assembly, the passage being is at least partially defined by an outer surface of the inner coupling piece and an inner surface of the outer coupling piece. The loop may be tightened about the anatomical feature with the tether clamped between the inner coupling piece and the outer coupling piece.

A bone hook apparatus is provided that includes a base, a rod receptacle disposed on a proximal side of the base, a first hook distally extending from the base and oriented in a first direction, and a second hook distally extending from the base and oriented in a second direction opposing the first direction, the first hook and second hook together configured to receive the bone. Kits and spinal constructs employing the bone hook apparatus are also described.

Presently disclosed is a spinal implant. In an embodiment, a spinal implant includes a porous body configured to promote bone growth. The porous body may have an attachment portion that is configured to secure the spinal implant to a fixation system attached to one or more vertebra. The porous body may also include a fusion plate extending from the attachment portion and configured to contact transverse processes, lamina, or facet of adjacent vertebrae. Accordingly, when the attachment portion is secured to the fixation system, the fusion plate may be maintained in compression against the transverse processes, lamina, or facet.

Provided is a spinal fixation device, which includes a cage which is placed between adjacent vertebrae to form a gap between the vertebrae, a middle plate which is detachably coupled to the cage, and deployment plates which are hinge-pivotably coupled to the middle plate at one side end, thereby stably fixing the cage in a correct position between the vertebrae.

In one embodiment, a non-invasively adjustable spinal system for treatment of a subject having spondylolisthesis includes a first implantable actuator having at least one anchoring structure, the anchoring structure configured to facilitate securement of the first implantable actuator to a portion of the sacrum of the subject. The non-invasively adjustable spinal system can further include an adjustment element, configured to be coupled to the first implantable actuator, the adjustment element having an engagement structure configured to engage at least one transverse process of a lumbar vertebra of the subject. The non-invasively adjustable spinal system can further include a driving element, wherein remote activation of the driving element causes movement of the adjustment element in relation to the first implantable actuator.

Provided is a spinal implant. The spinal implant include an implant unit disposed between a vertebra (hereinafter, referred to as a first vertebra) and a neighboring vertebra (hereinafter, referred to as a second vertebra) and a buffer unit provided in the implant unit to disperse or absorb a pressure, an impact, or a load, which is applied from the first vertebra and the second vertebra. The spinal implant may promote bone fusion formation in the state of being inserted between the vertebra and the neighboring vertebra during the surgery and to promote the quickly recovery after the surgery and also may fulfill its role as a substitute for a damaged disk through the shape deformation and the restoration of the buffer unit after the surgical procedure.

A ratcheted spinal device including a variable-length member including a ratchet mechanism that has an operative configuration that allows a change in length of the variable-length member in one direction and prevents a change in length of the variable-length member in an opposite direction, wherein the variable-length member includes polyaxial-joint attachment members for attachment to bone, which permit pivoting movement of the attachment members about more than one pivoting axis.

Systems and methods include solutions for fixation at the rib head for fractures and osteotomies adjacent to the rib head and transverse process. The disclosed rib plates, anchor systems, other implants, and instrumentation may also be applied to mid-rib fractures. The systems and methods may be used in the treatment of rib deformities, including the correction of rib hump deformity via thoracoplasty, as well as general corrections of chest and rib deformities. Systems and methods herein may be used in chest wall reconstructions due to trauma, cancer, or deformity.