What is intramedullary canal?
Intramedullary is a medical term meaning the inside of a bone. Examples include intramedullary rods used to treat bone fractures in orthopedic surgery and intramedullary tumors occurring in some forms of cancer or benign tumors such as an enchondroma.
What is a medullary cavity definition?
The medullary cavity is the hollow part of bone that contains bone marrow. The bone marrow makes blood cells and stores fat. Spongy bone (also called cancellous bone) is made up of small, needle-like pieces of bone arranged like a honeycomb.
Where is the medullary canal?
Located in the main shaft of a long bone , the medullary cavity has walls composed of spongy bone and is lined with a thin, vascular membrane. However, the medullary cavity is the area inside any bone that holds the bone marrow.
What are the types of medullary cavity?
A hollow medullary cavity filled with yellow marrow runs the length of the diaphysis of a long bone. The walls of the diaphysis are compact bone. The epiphyses, which are wider sections at each end of a long bone, are filled with spongy bone and red marrow.
What is an intramedullary device?
Intramedullary devices (IM nails) are used as internal struts to stabilise long bone fractures. Intramedullary nails are also used for fixation of femoral neck or inter-trochanteric bone fractures; however, this application requires the addition of screws.
What is the definition of articular cartilage?
Articular cartilage is the smooth, white tissue that covers the ends of bones where they come together to form joints. Healthy cartilage in our joints makes it easier to move. It allows the bones to glide over each other with very little friction.
What type of bone marrow is in the medullary cavity?
Red bone marrow
Red bone marrow is primarily found in the medullary cavity of flat bones such as the sternum and pelvic girdle. This type of bone marrow contains hematopoietic stem cells, which are the stem cells that form blood cells.
What is the function of medullary cavity?
The medullary cavity has a delicate membranous lining called the endosteum (end- = “inside”; oste- = “bone”), where bone growth, repair, and remodeling occur. This area is involved in the formation of red blood cells and white blood cells. The centre of the bone shaft is hollow and known as the Medullary Cavity.
Which bones have medullary cavity?
Gross Anatomy of Bone A long bone has two parts: the diaphysis and the epiphysis. The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The hollow region in the diaphysis is called the medullary cavity, which is filled with yellow marrow.
What is intramedullary implant?
Intramedullary nails Intramedullary devices (IM nails) are used as internal struts to stabilise long bone fractures. Intramedullary nails are also used for fixation of femoral neck or inter-trochanteric bone fractures; however, this application requires the addition of screws.
What are intramedullary rods made of?
Usually, the rod is made of titanium and they come in different lengths and diameters to fit patients of different ages and heights. A small incision is made at either the hip or the knee and the rod is inserted into the marrow canal. Screws are used to hold it in position at each end.