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trauma implant / orthopaedic trauma implant external fixation and internal fixation orthopaedic devices for trauma surgery |
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trauma implant - manufacturer: http://www.af-medical-trauma.com
Images of products manufactured by a German - trauma implant manufacturer trauma implant - hip lag screw - dynamic compression plate - pelvic reconstruction plate
- dynamic hip screw - dynamic condylar screw - cannulated screw • trauma implant - bone plates and bone screws
trauma implant - These are often used in conjunction with compression plating and form the basis for AO technique. They allow compression of the fracture surface by over drilling the proximal cortex.
These are used on the tension side of transverse or short oblique fracture. They provide stability and act as a load sharing device. The sequence of screw placement in the contoured bone plate holes, is as follows: - a neutral load drill guide, to attach bone plate - an offset drill guide, to compress the fracture - an offset guide, to further compress the fracture after screw 2 is loosened. - at least 3 screws placed with the neutral guide - plus an inter fragmentary screw in a different plane. Six or more cortices are needed on each side of a forearm fracture and at least 8 cortices are needed for fixation of lower extremity and humerus fractures. Plates are usually left in place [but can be removed if there is a need] for up to 2 years.
These are used mainly for pelvic and distal humerus fracture. They are more pliable and allow positioning for use as a neutralisation bone plate. • trauma implant - intramedullary fixation This is a commonly used and successful method of fixation for lower extremity diaphyseal fracture: Advantages include: - earlier ability to weight bearing - it can be placed in a closed position - proper axial alignment Disadvantages include: - the canal diameter can limit the size of the nail - there is less rotational control [but this can be improved with interlocking nails]. - it is sometimes technically difficult - there is disruption of the endosteal blood supply Orthopaedists should wait at least one year before removal. • orthopedic external fixation This orthopaedic device is used mainly in the management of Grade III open fractures which have a high risk of infection. The Orthopaedist maintain access to the wound while stabilising the fracture. It is used specifically in helping stabilise anterior disruptions of the pelvis, in spacing of areas with segmental bone loss and in comminuted distal radius fracture. • special orthopedic devices There is an ever-increasing amount. The most commonly used include:
This is a load sharing device which allows screw insertion to be placed at variable angles.
These are used in the fixation of a variety of fractures most especially femoral neck fractures. It is advisable to have a placement of kirschner wire prior to the insertion of the larger screw to lessen the risk of iatrogenic neurovascular injury.
These can be used proximally for unstable subtrochanteric fractures but are most effective for a distal femur fracture - with less than 9cm proximal to the joint. • trauma implant - tension band wiring This technique allows fixation on the tension side, relying on motion to allow union on the compression side. Parallel kirschner wires need to be placed close to the outer cortex to take advantage of this design with additional wire placed under the kirschner wires before being tightened. Tension Band Wiring is used most often for the fixation of patella, ankle and olecranon fractures.
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