A medical device for implantation in a hip joint of a patient is provided. The medical device is adapted to be fixated to the pelvic bone of the patient. The medical device comprises an inner and an outer surface, wherein a contacting portion, of said inner surface is spherical and adapted to face the center of the hip joint when said medical device is implanted. The medical device is adapted to receive a caput femur or a prosthetic replacement therefor having a spherical portion, wherein said medical device comprises at least one extending portion, extending said contacting portion of said inner surface such that said at least one extending portion clasps said spherical portion of said caput femur, or a prosthetic replacement therefor, such that said spherical portion is restrained in said medical device. Restraining the caput femur in the medical device reduces the risk that the hip joint dislocates when in use by the patient.

This invention relates generally to spine surgery and, in particular, to a surgical implant for separating adjacent spinal vertebrae.

A process for introducing a stabilizing element into a vertebral column, in which the stabilizing element is introduced in such a manner that the stabilizing element connects two adjacent vertebral bodies to one another.

A medical device for implantation in a hip joint and fixated to the pelvic bone of a patient is provided. The medical device has an inner and an outer surface. A contacting portion, of the inner surface is spherical and adapted to face the center of the hip joint when the medical device is implanted. The medical device is adapted to receive a caput femur or a prosthetic caput femur which has a spherical portion. The medical device has at least one extending portion, extending the contacting portion of the inner surface such that the at least one extending portion clasps the spherical portion of the caput femur or a prosthetic caput femur, such that the spherical portion is restrained in the medical device. Restraining the caput femur in the medical device reduces the risk that the hip joint dislocates when in use by the patient.

Embodiments herein are generally directed to vertebral implants and implant trials for use with vertebral implant assemblies. In some embodiments, these implants and implant trials may be used in conjunction with corpectomy procedures.

An impactor head (10) for releasably holding an outer surface (12) of a cup implant (14), comprises a head body (16), at least one rotatable implant-engagement arm (20) which is also at least in part linearly translatable, and an actuation mechanism (18) which moves the implant-engagement arm (20) to an implant-engagement condition and an implant-release condition.

A medical device for implantation in a hip joint comprising: a first part adapted to be fixated to the femoral bone of the patient; and a second part rotatably connected to the first part by means of a connecting member. The first part comprises a bowl-shaped inner contacting surface portion adapted to receive a bowl-shaped outer contacting surface portion of the second part such that the second part is rotatable, relative to the first part, around a point of rotation formed by the connecting member. The second part comprises a bowl-shaped inner surface adapted to receive a ball-shaped portion of a prosthetic replacement for the caput femur. The inner contacting surface comprises at least one extending portion extending beyond the equator line and being adapted to clasp the ball-shaped portion of the prosthetic replacement for the caput femur.

An implantable medical device for implantation in a mammal joint having at least two contacting surfaces is provided. The medical device comprises; an artificial contacting surface adapted to replace at least the surface of at least one of the mammal's joint contacting surfaces, wherein the artificial contacting surface is adapted to be lubricated, when implanted in said joint. Furthermore the medical device comprises at least one inlet adapted to receive a lubricating fluid from a reservoir, at least one channel at least partly integrated in the artificial contacting surface in connection with the at least one inlet for distributing the lubricating fluid to the surface of the artificial contacting surface. The medical device could be adapted to be operable by an operation device to receive the distributed lubricated fluid from a reservoir.

The disclosure relates to a vertebral body implant including a flexible main body and at least one pedicle screw joint. The flexible main body is an integrally formed single piece having at least one joint-accommodating hole and at least one opening connected to the at least one joint-accommodating hole. The pedicle screw joint is an integrally formed single piece movably accommodated in the at least one joint-accommodating hole.

A method of evaluating a human knee joint, includes: cutting away a proximal portion of the tibia; inserting the gap tensioner between the tibia and the femur; extending the gap tensioner urging the tibia and the femur apart and applying tension to the medial and lateral collateral ligaments; associating at least two tracking markers with the knee joint; providing an electronic receiving device operable to determine a position and orientation of each of the tracking markers relative to the electronic receiving device; moving the knee joint through at least a portion of its range of motion; while moving the knee joint, using the electronic receiving device to collect position data from the tracking markers; processing the collected position data to produce a geometric model of at least a portion of the knee joint; and computing one or more tool paths passing through the knee joint.