At the first visit on the six day after onset, the X - ray was normal. On the same day, MRI findings was osteomyelitis in the middle phalanx.
Like a ball, the screw head slides down the inclined shoulder of the cylinder. The holes of the plate are shaped like an inclined and transverse cylinder.
Like a ball, the screw head slides down the inclined cylinder. The horizontal movement of the head, as it impacts against the angled side of the hole, results in movement of the plate and the fracture fragment already attached to the plate by the first screw 1.
This leads to compression of the fracture. In practice, when the screw is inserted in such a hole and tightened, this results in movement of the bone fragment relative to the plate, and consequently, compression across the fracture site.
The design of the screw holes allows for a displacement of up to 1. After the insertion of one compression screw, additional compression using one more eccentric screw is possible before the first screw is completely tightened.
For axial compression over a distance greater than 2. After insertion of one compressing screw, it is only possible to insert one further screw with compressing function in the same fragment. Movement of the plate pushes the first compression screw against the side of the screw hole and prevents further movement.
When the second screw is tightened, the first has to be loosened to allow the plate to slide on the bone, after which it is retightened. Depending upon the intended function of the plate, the eccentric or neutral drill guide is chosen.
If the screw is inserted in neutral green position, the hole is 0. The load gold drill guide contains a hole 1. The application of the drill guides depends on the function the screw will have: Neutral position green end of the guide. Compression golden end of the guide. To drill an eccentric load hole and apply compression, the arrow on the drill guide must point towards the fracture.
If the plate is intended to function as a buttress see belowthe universal drill guide or sleeve may be used, placing the screw at the opposite end of the hole. This prevents any gliding of the plate relative to the bone. Buttressing universal drill guide.Some of these cookies are essential to the operation of the site, while others help to improve your experience by providing insights into how the site is being used.
Director- Dr. Prabodh M. Desai Senior Trustee & Member SEC/AO. Foundation. Chairman - Dr. Sk. Abbas Uddin Ahmed Organising Secretary – Dr. Anwar Ahmed AO-SEC Trauma Symposium, April 18 - 20, , Dhaka, Bangladesh.
AO SEC Course Principles in Operative Fracture Management for Operating Room Personnel June 10–12, , Ndola Central Hospital, Ndola, Zambia. HIV and osteosynthesis J Harrison When it goes wrong ORP Team Case discussion Interactive in 4 groups.
AO/OTA B injuries are common ankle fractures treated Among 37 MIS patients, 13 patients were treated with minimally invasive percutaneous plate osteosynthesis Minimally Invasive Versus Open Distal Fibular Plating for AO/OTA B Ankle Fractures.
bridging plate osteosynthesis is essential if good clini-cal results are to be obtained. Most of the pitfalls encoun-tered by surgeons using the LCP system have nothing to do with the implants and must be attributed to nonob-servation of important basic principles of the concept of biological osteosynthesis (24).
These principles are sum-marized below. The two osteosynthesis plates (2g,h) according to the invention are provided with drilled holes (3a,b,c) which are arranged or formed so that the bone screws (12) passing through them come to rest in different directions in space, so that bone screws (12) can pass more completely than in the past through the bone space of the splinted bone (1).