摘要:
An intramedullary screw and fixation system for intraosseous bone fusion of the subtalar joint includes a lag screw member, a reamer for reaming an internal surface of each of the calcaneus and talus medullary canals, and targeting guide assembly for alignment with the subtalar joint. The lag screw member includes an elongated body, a first threaded portion at a first end and a bulbous portion at a second end. The targeting guide assembly receives a cutting blade in an elongated rod for reaming the articulating surfaces of the calcaneus and talus intramedullary canals, where the cutting blade is inserted through a percutaneous incision into the elongated rod.
摘要:
A method for applying compression to a joint includes providing an intramedullary fixation assembly having a proximal screw member positioned at a proximal end of the intramedullary fixation assembly and a lag screw member positioned at a distal end of the intramedullary fixation assembly. Medullary canals are drilled in a first and second bone and the medullary canals are reamed. The proximal screw member is inserted into the first bone and a drill is used create a dorsal hole in the first bone. The lag screw member is slideably coupled to the dorsal hole and to the proximal screw member and into the second medullary canal. A torque is applied to the lag screw member to apply compression to the joint.
摘要:
An orthopedic screw assembly including a proximal member positioned at a proximal end of the orthopedic screw assembly, a distal member positioned at a distal end of the orthopedic screw assembly, and an elongate element having a first end and a second end. The elongate element is coupled to the proximal member at the first end and coupled to the distal member at the second end. The elongate element is configured to apply a dynamic compressive force on each of the proximal member and the distal member, thereby coupling the proximal member to the distal member.
摘要:
A joint resurfacing system for repairing defects in the articular surface of bones in the foot. The system includes a hemiarthroplasty implant for the talus resulting in minimal removal of the underlying bone. The implant device comprises a first curved surface and a second curved surface, with the second curved surface coupled to an articular surface of a talus bone via a dynamic fixation device.
摘要:
An orthopedic fixation system includes a compression plate member, a lag screw member, and a plurality of threaded screw members for applying compression across a fracture site. The compression plate member has a generally planar body, an upper surface, and bone contacting surface. The planar body includes a plurality of through-apertures and a hinged tab member having an elongated through aperture, which is adapted to receive the lag screw member and cause the tab member to recess towards a bone divot formed in the underlying bone. The compression plate member is also adapted to receive the plurality of screw members within the through-apertures for fixably and threadably coupling the compression plate member across a fracture site. The lag screw member applies a direct compressive force across the fracture site through the deformable tab that is recessed in the bone divot.
摘要:
An intramedullary fixation assembly for bone fusion includes an implant member positioned at a proximal end of the intramedullary fixation assembly, a lag screw member positioned at a distal end of the intramedullary fixation assembly and a circular member frictionally coupled to the lag screw member. The lag screw member is slideably coupled to the implant member and provides for an interference fit with the implant member.
摘要:
A method for applying compression to a joint includes providing an intramedullary fixation assembly having a proximal screw member positioned at a proximal end of the intramedullary fixation assembly and a lag screw member positioned at a distal end of the intramedullary fixation assembly. Medullary canals are drilled in a first and second bone and the medullary canals are reamed. The proximal screw member is inserted into the first bone and a drill is used create a dorsal hole in the first bone. The lag screw member is slideably coupled to the dorsal hole and to the proximal screw member and into the second medullary canal. A torque is applied to the lag screw member to apply compression to the joint.
摘要:
An intramedullary assembly for intraosseous bone fusion includes a lag screw member and a tapered screw member. The lag screw member includes a first elongated body, where the first elongated body includes a first threaded portion at a first end and a bulbous portion at a second end. The tapered screw member is coupled to the lag screw member, and the tapered screw member includes a second elongated body, where the second elongated body includes a second threaded portion at a third end, and an opening at a fourth end.
摘要:
An intramedullary assembly for intraosseous bone fusion includes a lag screw member and a tapered screw member. The lag screw member includes a first elongated body, where the first elongated body includes a first threaded portion at a first end and a bulbous portion at a second end. The tapered screw member is coupled to the lag screw member, and the tapered screw member includes a second elongated body, where the second elongated body includes a second threaded portion at a third end, and an opening at a fourth end.
摘要:
An intramedullary screw and fixation system for intraosseous bone fusion of the subtalar joint includes a lag screw member, a reamer for reaming an internal surface of each of the calcaneus and talus medullary canals, and targeting guide assembly for alignment with the subtalar joint. The lag screw member includes an elongated body, a first threaded portion at a first end and a bulbous portion at a second end. The targeting guide assembly receives a cutting blade in an elongated rod for reaming the articulating surfaces of the calcaneus and talus intramedullary canals, where the cutting blade is inserted through a percutaneous incision into the elongated rod.