Dr. Arun Biju

Arterial Supply And Venous Drainage Of Face In Flow Chart    

 #Bedsores 🔥 ---->Definition: Bedsores_also called pressure sores or pressure ulcer _ are injuries to skin and underlying tissue resulting from prolonged pressure on the skin.  Bedsores most often develop on skin that cover bony areas of the body such as  .Heels  .ankles  .hips .tailbone or buttocks .shoulder blades  .spine  .backs of arm .legs where they rest against the chair  ---->Causes : Bedsores are caused by pressure against the skin that limit blood flow to the skin and nearby tissues, other factor related to limited mobility can make the skin vulnerable to damage and contribute to development of pressure sores.  The primary contributing factors are  1.  Sustained pressure _ when your skin and the underlying tissues are trapped between bone and surface shuch as wheelchair ♿ or bed,  The pressure maybe greater than the pressure of blood flowing in the tiny vessels that deliver oxygen and nutrients to tissues, without these essential nutrients, skin cells and tissues are d

  The  sciatic nerve , also called the  ischiadic nerve , is a large nerve  in humans and other vertebrate animals which is the largest branch of the sacral plexus  and runs alongside the hip joint and down the lower limb . It is the longest and widest single nerve in the human body , going from the top of the leg to the foot on the posterior aspect.  The sciatic nerve has no cutaneous branches for the thigh. This nerve provides the connection to the nervous system for the skin of the lateral leg and the whole foot, the muscles of the back of the thigh, and those of the leg and foot. It is derived from spinal nerves  L4  to S3 . It contains fibers  from both the anterior and posterior divisions of the lumbosacral plexus.