osteosynthesis.pptx

osteosynthesis

1. O steosynthesis

2. Osteosynthesis  is a type of  reconstructive surgery  aimed at stabilising and joining the ends of a broken bone after a fracture, an osteotomy, or a  non-union  from a previous fracture. Bone fragments are stabilised by using  mechanical devices

3. There are two types of osteosynthesis: External osteosynthesis  – that is, by using an external fixator. This method can be used if you have a compound fracture, which has a high risk of infection. I nternal osteosynthesis  – there are two kinds of internal osteosynthesis:  open reduction internal fixation  (ORIF) and  closed reduction internal fixation  (CRIF). ORIF consists of open surgery to set the bones, while CRIF involves reduction without open surgery to achieve the same ends. Next, mechanical devices like pins, plates, or screws are used to fix the bones together.

4. Plate functions Compressio n Buttress Tension band Bridging Protection 

5. Protection (neutralization) plates Function A protection plate neutralizes bending and rotational forces to protect a lag screw fixation.  This is equally true of plates with locking or non-locking screws.

6. Compression plates Function The plate produces compression at the fracture site to provide absolute stability. Application (transverse fractures , oblique fractures )

7. Bridge plates Function Bridge plating techniques are used for multifragmentary long bone fractures where intramedullary nailing or conventional plate fixation is not suitable.

8. Buttress (antiglide) plates Function Buttress plates are used in managing partial articular fractures. They are used to supplement lag screw fixation of metaphyseal shear or split fractures in the metaphyseal regions. Lag screws may be inserted either through or outside the buttress plate.