1.Dynamic Skull (DHS)
Hip fracture between tuberosities - DHS reinforced spinal cord:
★DHS power worm main advantages:
The screw-on internal fixation of the hip bone has a strong effect, and can be used effectively in situations where the bone is immediately used.
In-cylinder gliding mechanism avoidable free tip perforation of the hip bone or molar, negative gravity directly leads to the bone.
Power sliding device retention fracture repositioning, less damage.
Compressive and sliding double ability, with active static pressure action.
★ DHS power train's weaknesses:
Impaired anti-rotation ability, after the usual clenched shoes or polymer external fixation.
The middle periosteum is severely damaged, the widening detachment of the tissue, the rupture of the blood donation, and the investigation found that the bone was fixed in the skull, and the bone was severely damaged.
At the time of fixation, there is a rough bulge under the opening, the blade damage is severe, the head fixation screw is coarse, the diameter is about 15mm, and it is impossible to open multiple times.
The angle is fixed at 130 degrees or 135 degrees, and the patient's own actual angle is adjusted accordingly.
2. Dynamic gear (DCS)
Hip fracture fracture—DCS fixation:
DCS sum 95-degree incision steel plate-treated reflex fracture:
★DCS Kinky Dragon Main Advantages:
It is possible to select the correct entry point for the root fracture, and the procedure operation method.
The force applied to the steel plate is close to the right angle, and the biomechanical requirements of the matching spine. Under heavy load, gravity is applied to the neck of the steel plate, and then redistributed to each screw, the stress is distributed, and the fixing is always rigid.
A small number of DCS spiral fractures, increased solidity, fixation at the fracture site, and a low incidence rate afterward.
3.Proximal hip bone pin (PFN)
Hip fracture between tuberosities—PFN fixation:
★PFN fixed advantages:
The diameter of the body is very small (generally 9mm), and it is not possible to insert it. (Excellent Gamma coarse tip——17mm)
The proximal end of the PFN has an external angle of approximately 6 degrees, the external angle is reduced, and there is no strong internal force when pulling.
The upper end can be placed into the hip bone with two spirals, increased anti-rotation spirals, double teeth inside the hip bone, and increased anti-fatigue ability.
The far-end keyhole and the main key (long-ended length) are far apart, and the stress concentration of the hip bone can be reduced.
★ PFN fixed flaws:
There is a certain problem with the correct parallel insertion of two mother-of-pearl on the side of the hip bone, especially if you are short and small, the hip bone is very short, and the elderly lady, you need to use this hip bone. 6.5mm helical thread), the position of the leash is constantly adjusted during the period of urgent use, and during the actual adjustment process, the initial accuracy may be lost. Simultaneous retention ability is also a big problem. In addition, there is a risk of bone crumpling, which is accompanied by easy bone degeneration due to the two roots of the dynamic spiral.
Because of PFN, the arc is large, and it is too long. fracture. Because of this change, the position of the inner umbilical cord is correct, and the cortex near the outer umbilical cord of the inner umbilical cord is undoubtedly located.
Large amount of radiation, high cost of surgical instruments, and high demands on surgical skill.
Sichuan CAH
Contact: Yoyo
Tel/WA:+8615682071283
Email:liuyaoyao@medtechcah.com
Post time: Mar-02-2023
