The present invention includes a method and devices for treating osteonecrosis in, e.g., children, adolescents, and adults comprising: identifying a subject in need of treatment for osteonecrosis; drilling two or more holes into a bone in need of treatment for osteonecrosis; inserting two or more needles or cannulas into the holes in the bone; washing an interior of the bone with a washing fluid introduced through one or more of the needles or cannulas inserted into the bone; and after washing the interior of the bone introducing one or more bone growth promoting materials or cells into the bone.

Assemblies of one or more implant structures make possible the achievement of diverse interventions involving the fusion and/or stabilization of the SI-joint and/or lumbar and sacral vertebra in a non-invasive manner, with minimal incision, and without the necessitating the removing the intervertebral disc. The representative lumbar spine interventions, which can be performed on adults or children, include, but are not limited to, SI-joint fusion or fixation; lumbar interbody fusion; translaminar lumbar fusion; lumbar facet fusion; trans-iliac lumbar fusion; and the stabilization of a spondylolisthesis.

Assemblies of one or more implant structures make possible the achievement of diverse interventions involving the fusion and/or stabilization of the SI-joint and/or lumbar and sacral vertebra in a non-invasive manner, with minimal incision, and without the necessitating the removing the intervertebral disc. The representative lumbar spine interventions, which can be performed on adults or children, include, but are not limited to, SI-joint fusion or fixation; lumbar interbody fusion; translaminar lumbar fusion; lumbar facet fusion; trans-iliac lumbar fusion; and the stabilization of a spondylolisthesis.

Assemblies of one or more implant structures make possible the achievement of diverse interventions involving the fusion and/or stabilization of the SI-joint and/or lumbar and sacral vertebra in a non-invasive manner, with minimal incision, and without the necessitating the removing the intervertebral disc. The representative lumbar spine interventions, which can be performed on adults or children, include, but are not limited to, SI-joint fusion or fixation; lumbar interbody fusion; translaminar lumbar fusion; lumbar facet fusion; trans-iliac lumbar fusion; and the stabilization of a spondylolisthesis.

Assemblies of one or more implant structures make possible the achievement of diverse interventions involving the fusion and/or stabilization of the SI-joint and/or lumbar and sacral vertebra in a non-invasive manner, with minimal incision, and without the necessitating the removing the intervertebral disc. The representative lumbar spine interventions, which can be performed on adults or children, include, but are not limited to, SI-joint fusion or fixation; lumbar interbody fusion; translaminar lumbar fusion; lumbar facet fusion; trans-iliac lumbar fusion; and the stabilization of a spondylolisthesis.

A minimally invasive hip joint and a joint replacing method are provided. The minimally invasive hip joint includes a threaded rod and a joint body including a plurality of elastic sheets, with their top ends being all disposed at a top end position of the threaded rod, and bottom ends being all movably sleeved on the threaded rod and dispersedly distributed along the circumferential direction of the threaded rod; and the threaded rod is threadedly engaged with a locking component located at the below position of the elastic sheets. The joint replacing method comprises replacing a damaged or undamaged femoral head on a femur with the aforementioned minimally invasive hip joint. When replacing a damaged or undamaged femoral head with the minimally invasive hip joint, it is only necessary to drill at the outer side of the trochanter major and rotate the locking component.

The present invention includes a method and devices for treating osteonecrosis in, e.g., children, adolescents, and adults comprising: identifying a subject in need of treatment for osteonecrosis; drilling two or more holes into a bone in need of treatment for osteonecrosis; inserting two or more needles or cannulas into the holes in the bone; washing an interior of the bone with a washing fluid introduced through one or more of the needles or cannulas inserted into the bone; and after washing the interior of the bone introducing one or more bone growth promoting materials or cells into the bone.

The invention involves a device and method for acquiring bone marrow aspirate. The system includes an elongated cannulated fastener having a threaded end for attachment to a bone. The threaded portion includes a directional aperture sized to allow marrow to be drawn into the cannula. The directional aperture also allows the user to direct the aperture in a desired direction within the bone for acquisition of the marrow. The distal end of the cannulated fastener includes a connector which may be in the form of a Luer lock to allow vacuum to be applied to the cannula for drawing the marrow into a syringe or the like.

Intramedullary nails, aiming guide assemblies, and methods. The aiming guide assembly can include an aiming guide having an elongate proximal handle portion. A generally arcuate distal implant alignment tip connector portion is connected to the proximal handle portion and has a distal implant alignment tip extending along a tip axis parallel to a longitudinal axis of the proximal handle portion. A recon module may be releasably attached to a proximal end of the proximal handle portion. An oblique module may be releasably attached to the distal implant alignment tip portion.

A lubrication device for lubricating a joint of a human or mammal patient, which is entirely implantable in a patient's body, comprises a reservoir for storing a lubricating fluid and a fluid connection for introducing the lubricating fluid into the joint when the device is implanted in the patient's body. Further, the fluid connection comprises a fluid connection device connecting the reservoir with the joint such that a lubricating fluid flow is established from the reservoir into the joint. The fluid connection comprises either an infusion needle adapted to be intermittently placed into the joint for injecting the lubricating fluid, or a tube adapted to be permanently placed into the joint for continuously injecting the lubricating fluid.