3DPrinted Guide helps regrow complex Nerves after injury
A team of researchers from various universitiesin U.S has developed a firstofitskind, 3Dprinted guide that helps regrow both thesensory and motor functions of complex nerves after injury. The groundbreaking researchhas the potential to help more than 200,000 people annually who experience nerve injuriesor disease. Nerve regeneration is a complex process. Becauseof this complexity, regrowth of nerves after injury or disease is very rare Nerve damage is often permanent. Advanced3D printing methods may now be the solution. The researchers used a combination of 3D imagingand 3D printing techniques to create a custom
silicone guide implanted with biochemicalcues to help nerve regeneration. The guide's effectiveness was tested in the lab usingrats. To achieve their results, researchers useda 3D scanner to reverse engineer the structure of a rat's sciatic nerve. They then useda specialized, custombuilt 3D printer to print a guide for regeneration. Incorporatedinto the guide were 3Dprinted chemical cues to promote both motor and sensory nerve regeneration.The guide was then implanted into the rat by surgically grafting it to the cut endsof the nerve. Within about 10 to 12 weeks, the rat's ability to walk again was improved.Scanning and printing takes about an hour,
but the body needs several weeks to regrowthe nerves previous studies have shown regrowth of linearnerves, but this is the first time a study has shown the creation of a custom guide forregrowth of a complex nerve like the Yshaped sciatic nerve that has both sensory and motorbranches. The exciting next step would be to implantthese guides in humans rather than rats In cases where a nerve is unavailable forscanning, the researcher said there could someday be a â€œlibraryâ€� of scanned nervesfrom other people that s could use to create closely matched 3Dprinted guidesfor patients.
Gluteus Maximus Muscle Function Origin Insertion Human Anatomy Kenhub
Hey, everyone! It's Matt from Kenhub, andin this tutorial, we will discuss the origin, insertion, innervation, and function of thegluteus maximus. The gluteus maximus muscle builds the mostsuperficial layer of the dorsal gluteal musculature and so forms the surface anatomy of the glutealregion or buttocks. The innervation is supplied by the inferiorgluteal nerve, a branch of the sacral plexus. Numerous vessels and nerves run under thegluteus maximus muscle, including the sciatic nerve, the pudendal nerve, and the superiorgluteal vessels. The muscle originates from the sacrum (dorsalpart), ilium (behind the posterior gluteal
line), the thoracolumbar fascia, and the sacrotuberousligament. Its caudal fibers insert at the gluteal tuberosityof the femur. On the contrary, the cranial fibers go over into the iliotibial tract,a strong fibrous band at the outside of the thigh, inserting at the lateral condyle atthe tibia. The gluteus maximus muscle is the most powerfulextensor and external rotator of the hip. It also supports the stabilization of thehip joint. The contraction of the cranial fibers leads to abduction, whereas the contractionof the caudal fibers causes an adduction. The iliotibial tract enhances the lateralthigh fascia, and thus, relieves the pressure
of the femur. That is also known as tensionband principle. This tutorial is more fun than reading a textbook,righté If you want more tutorials, interactive quizzes, articles, and an atlas of human anatomy,click on the â€œTake me to Kenhubâ€� button. It is time to say goodbye to your old textbooksand say hello to your new anatomy learning partner, Kenhub! See you there! kenhub .