Fracture healing in biological plate osteosynthesis.
The conflict between the need for absolute anatomical reduction and, at the same time, the desire for soft tissue preservation has been going on for a long time. Not just solid healing, but immediate and continuous function of the limb is now a leading goal. However, precise reduction and absolute stable fixation has its biological price. There has been evidence to show the superiority of biological fixation over a stable mechanical fixation. This led to the development and improvement in the techniques of biological fixation for fractures and also the development of stabilization systems that help in achieving a biological fixation.,
osteosynthesis with internal fixation was performed ..
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AO Venue: Venue: Anatomical Institute.
expert zone clinical topic 27 Minimally invasive plate osteosynthesis of the humeral shaft William.
- Recognize the possibility and subtle signs of early infection after osteosynthesis - Explain the to the AO Pediatric AO Foundation.
The AO Trauma Hungarian chapter was established as a regional entity of the AO Foundation The AOTrauma Masters Course—Minimally Invasive Osteosynthesis.
Group picture of the faculties and participants of the AOTrauma Course, Basic Principles of Fracture Management for Swiss Residents, AO Davos Courses, December.
The AO Research Institute Davos has the right conditions within the AO Foundation to promote success in the translation of scientific results into procedures.
Course program AOTrauma Course—Minimally Invasive Osteosynthesis Course: December 11–14, 2011 Davos, Switzerland Lecture hall: Dischma.
The OTC Foundation March 2016 Newsletter.
Main principle of biological fixation by minimally invasive locked plate osteosynthesis (MILPO) in lower extremity long bone fractures is relative stability which is provided by using long plate with limited number of screws. Some biomechanical studies have been reported about this issue. However, clinical studies are still missing. The aims of this retrospective extended case series were to evaluate the clinical and radiological results of adult tibia fractures treated by MILPO and the effect of plate length and screw density on complication rates. Twenty tibia fractures in 19 patients (mean age 42.3 years) operated by MILPO were reviewed. According to the AO classification, diaphyseal and metaphyseal fractures without intraarticular extensions were simple and wedge-type fractures, whereas all intraarticular fractures were comminuted. Number of screws, cortices and empty screw holes proximal and distal to the fracture, plate-span ratio (plate length divided by overall fracture length), plate-screw density (number of inserted screws divided by number of plate holes), fixation failures, delayed or nonunion, malalignment and leg length discrepancy were documented. Mean follow-up was 16 (range 12–26) months. On average, 4 screws with 6 cortices were used both proximally and distally in all fractures. Only in diaphyseal fractures, one screw hole close to the fracture was omitted. Average plate-screw density and plate-span ratio were 0.68 and 4, respectively. Mean union time was 3 months. There were no cases of delayed or nonunion on the final follow-up. Plate bending was observed in one patient who had fair result. The remaining 18 (94.8 %) patients showed good and excellent results. Satisfactory results can be achieved despite low plate-span ratio and high plate-screw density in simple and wedge-type diaphyseal fractures of the tibia. Additionally, plate-screw density can be higher at metaphysis in intraarticular fractures, in which essential point is a perfectly stable fixation that provides early motion.
bone is balanced with rigid fracture fixation
External fixation osteosynthesis Video Animation of Intramedullary Nail Fixation (VIDEO) Surgical reduction and fixation is indicated for the following types of proximal femur fractures:
Biological osteosynthesis | Request PDF
Or as AO Foundation President Jaime.
There are two basic types of fracture fixation, load-bearing osteosynthesis (A) and load-sharing osteosynthesis.
This AOCMF Seminar will teach the theoretical principles of the operative treatment of craniomaxillofacial fractures, considering state-of-the-art osteosynthesis.
The trauma courses with cadaver dissections, run by the AO Foundation, The approaches and osteosynthesis course is held over five days and provides adequate.
AO Surgery Reference - quick online reference in clinical life.
fixation to view the fracture ..
All patients were treated by the same surgical team in the first author’s institution. The average time between the injury and surgical procedure was 11.3 h (range 2–24). Patients with open fractures were operated within an average of 8.8 h following injury (range 2–12). All operations were performed on a radiolucent table in a supine position without using a traction table. Debridement combined with irrigation was repeated in the operating room for open fractures. The main fracture fragments were aligned using manual traction and closed reduction manoeuvres. Reduction in large fragments in one comminuted fracture (AO 43-C1) and in one spiral-oblique simple fracture (AO 42-A1) was maintained by percutaneously inserted individual lag screws. In three patients (AO 43-C1), the articular fragments required open reduction and rigid fixation before plate placement. Nine patients with tibial fractures had fractures on the fibula also. Four fibular fractures at the level of the syndesmosis were treated by open reduction and internal fixation using anatomic fibular plates to provide lateral column stability and restoration of the correct length.
Biological Osteosynthesis - ResearchGate
Furthermore, interactions of the plate-screw-bone composite could be implemented and analyzed in computational simulations –, whereat fixation of osteosynthesis implants like plates or nails to the bone stock can basically be considered with three different numerical approaches.