What is a DHS in Orthopaedics?
The Dynamic Hip Screw (DHS) or Sliding Hip Screw can be used as a fixation for neck of femur fractures. This would usually be considered for fractures that occur outside the hip capsule (extracapsular), often stable intertrochaneric fractures.
What is DHS surgery?
Dynamic hip screws (DHS) are a femoral head-sparing orthopedic device used to treat femoral neck fractures. It is sometimes referred to as a pin and plate.
What is the difference between DHS and PFN?
Conclusion: PFN is better than DHS in type II intertrochanteric fractures in terms of decreased blood loss, reduced duration of surgery, early weight bearing and mobilization, reduced hospital stay, decreased risk of infection and decreased complications.
How does DHS work hip?
The DHS is based on tension band principle and allows the screw to slide within the barrel to enable compression of the fracture when the patient begins to bear weight. This principle only works in the presence of intact medial wall and so cannot be successful in a reverse oblique fracture of the proximal femur.
What does DHS stand for?
The Department of Homeland Security
The Department of Homeland Security (DHS) protects our country’s borders and manages the flow of people and products into and out of the United States.
How do you do DHS?
Apply Plate
- Select a 4-hole DHS plate.
- Ensure it is sitting flush on the femur.
- Use the plate impactor to push DHS plate onto bone.
- Use a 3.2mm drill bit and universal drill guide to drill the distal hole (ensure that sitting fully on bone)
- Measure screw hole and insert screw.
- Ensure sitting on bone correctly.
What is DHS plate?
DHS Plate (Dynamic Hip Screw Plate) Specification, Uses, Sizes and Surgical Techniques. The DHS Plate (Dynamic Hip Screw Plate) is designed to provide strong and stable internal fixation of a variety of intertrochanteric, subtrochanteric and basilar neck fractures, with minimal soft tissue irritation.
What is the purpose of the DHS?
The Department of Homeland Security has a vital mission: to secure the nation from the many threats we face. This requires the dedication of more than 240,000 employees in jobs that range from aviation and border security to emergency response, from cybersecurity analyst to chemical facility inspector.
What is Z effect in PFN?
Z-effect and reverse Z-effect are complications that arise from the surgical treatment of trochanteric fractures with PFN comprising two interlocking head screws. Such complications are induced by the migration of screws in opposite directions, which may lead to treatment failure.
What is proximal femoral nailing?
The proximal femoral nail (PFN) is an osteosynthetic implant designed to treat proximal femoral fractures in the trochanter area with a closed intramedullary fixation method.
How long does it take to recover from a dynamic hip screw?
Most people are able to return to work 4 weeks to 4 months after surgery. But it may take 6 months to 1 year for you to fully recover. Some people, especially older people, are never able to move quite as well as they used to.
Is dynamic hip screw permanent?
What is a dynamic hip screw? The internal metal work consists of a large screw placed in the head of the femur and a plate held onto the side of the femur by several smaller screws. This metal work will remain in permanently even once the fracture has healed.
Which is better sliding hip screw or DHS?
The FAITH study (2017) suggests that both are comparable for revision / reoperation rates at 24 months, but the sliding hip screw group had a greater instance of avasular necrosis. However, this was not a significant difference and the DHS was found to be more beneficial for displaced fractures and reduced rates of reoperation.
When to use a DHS plate for a fracture?
Pediatric DHS Plate (with Dynamic Compression Holes). These plates are used for simple and multiple pertrochanteric and intertrochanteric fractures, fractures of the femoral neck, and certain subtrochanteric fractures in Pediatric patients. Plates are used in conjugation with DHS Screw. For use with 3.5/4.5mm Screws.
What are the screws on a DHS plate?
Barel of the Accommodates Standard Lag Screw Φ 12.5mm with Compression screw and shaft of the plate accommodates Cortex Screw Φ 4.5mm, Self Tapping. DHS/DCS Plate System is provided non-sterile.
What should the tip of a DHS screw be?
Baumgaertner et al. published in the Journal of Bone and Joint Surgery America in 1995 their paper describing the cut out (failure rate) of DHS screws in consideration to tip apex distance (which should be less than 25mm) and the position of the lag screw in the head (should be AP centre / Lateral centre).