Lower Limb Locking plate is a kind of implant fracture orthopedics with locking thread holes.
The lower limb locking plate allows the bone to bind to the plate more firmly, so that the reduced limb is more stable. Locking plates were first used in spine and maxillofacial surgery 20 years ago to stabilize fractures while reducing extensive dissection and damage to soft tissues. When the threaded hole in the locking plate is screwed in by a screw with a threaded head, the plate becomes an Angle fixing device. It can have both locking and non-locking holes for different screws to be screwed in. Any plate that can be screwed into an Angle fixed (stable) screw or bolt is essentially a locking plate.
Locking plate system does not rely on bone friction to achieve connection, but completely depends on the interlocking structure of the plate itself. A certain gap between the plate and the bone surface can be left, which can eliminate the adverse effect of heavy pressure contact between the plate and bone, and greatly improve the blood supply and the growth and recovery of the periosteum. The main biomechanical difference from conventional plates is that the latter relies on friction at the bone-plate interface to accomplish plate compression on bone. Stability is maintained by an angularly stable interface between the screw and the plate. Because the locking internal fixator has a stable integrity, the pull-out force of the locking screw is much higher than that of the ordinary screw. It is difficult for a single screw to be pulled out or broken unless all the surrounding screws are pulled out or broken.
Locking Plate,Femur Plate,fibula plate,tibia plate Jiangsu Aomed Ortho Medical Technology Co.,Ltd , https://www.medthofixation.com
How to identify small tail Han sheep
With the rapid development of animal husbandry after the accession to the WTO, especially farmers, farm workers really tasted the sweetness of raising sheep. In an upsurge of employees purchasing small tailed sheep, the sheep traffickers on the market used the urgency of the masses to buy Small Tail Han sheep and started selling fake small-tail sheep. To this end, the identification of true and false Small Tail Han sheep is introduced to farmers, so as to avoid being deceived. 1. Characteristics of Small Tail Han Sheep: Small Tail Han sheep are excellent local breeds. It is a multi-tire high-product line with good production performance. It has two or three tires in a year. It has 3 to 5 lambs per litter and a maximum of 7 to 8 animals. The height of adult male ram is 100 cm, and the maximum body height is 110 cm. Kg, maximum weight 180 kg, adult ewes body height 84 cm, weight 80 kg, maximum weight 125 kg. Feeding small-tailed sheep is a highly efficient breeding industry. 2, the characteristics of small tail Hanyang: purebred small wool Hanyang body shape, body drive long; rams 4 months old 35-50 kg, high legs, nose bulge, drooping body. The rams have larger spiral angles, the ewes have small horns, ginger horns and horns, very few horns, the rams have large necks, the rams have small necks, and the fat tails are above the hock. Round. 3ã€Differentiation from Shandong Huyang: Shandong has a Huyang sheep. The appearance of this Huyang sheep is similar to the young sheep of the 1-year-old Little Tail Han sheep at the age of 1 year and a half. Therefore, the sheep traffickers use some people to discriminate poorly. The weak point is to sell fake small-tailed sheep and to pretend to be small sheep Han sheep. In order to make money. Careful observation of this Hu sheep and Small Tail Han sheep is a difference. Breeding Lake Sheep has no horns, and the body drive is long-shaped, with undeveloped forebody, high rear drive, slow growth, and a smaller adult body size, adult ram 38-48 kilograms, adult ewes 32-42 kilograms, The legs are not high and the bridge of the nose is not raised. 4. Identification with other hybrid sheep: In recent years, some areas have crossed the Little Tail Han sheep to produce hybrid sheep. Although this hybrid sheep is somewhat similar in appearance to Small Tail Han sheep, it is essentially completely different. The tail of the Little Tail Han sheep is fat tail, and it is a piece of round shape, while the tail of the hybrid sheep is long and its legs are not high. The main thing is that the growth rate of the hybrid sheep is slow and the lambing rate is low. Of course, the efficiency is poor.
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