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Topic: Long bone


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In the News (Fri 11 Dec 09)

  
  Bone - Wikipedia, the free encyclopedia
Most bones of the limbs (including the three bones of the fingers) are long bones, except for the kneecap (patella), and the carpal, metacarpal, tarsal and metatarsal bones of the wrist and ankle.
The bones of the wrist and ankle are short bones, as are the sesamoid bones.
The bones of the spine and hips are irregular bones.
en.wikipedia.org /wiki/Bone   (2335 words)

  
 The University of Iowa Office of the State Archaeologist -- Bone Tools
Long bones of large animals can be cracked and broken into sharp splinters suitable for immediate use as picks or scrapers or for further modification into awls and other tools.
Saw-tooth-edged tools were commonly made from the long bones of large animals, particularly the metatarsals (long foot bones) of bison and elk.
The ribs of bison and elk as well as the long bones of deer were sometimes drilled with holes for use in straightening arrow shafts.
www.uiowa.edu /~osa/learn/ancient/bone.htm   (1121 words)

  
 Bonetumor.org - The Web's Most Comprehensive Bone Tumor Resource
Bone metastasis is diagnosed in 4% - 13% of patients with thyroid cancer (Marcocci et al, Surgery 106:960-966, 1989 and McCormack, Cancer 19:181-184 1965.) The lesions are frequently lytic and their fracture risk depends on their location.
In bones subjected to bending, it is the location of the defect that is important in determining the amount of strength reduction.
Many different criteria have been suggested including the size of the lesion; the type of cancer that metastasized to bone; the location of the metastatic lesion; pain due to the lesion; whether the lesion is lytic or blastic; irradiation of the lesion; and the use of biomechanics to predict fracture.
www.bonetumor.org /tumors/pages/pathFX.htm   (3470 words)

  
 Bone   (Site not responding. Last check: 2007-10-09)
Bone volume fraction is defined as the bony matrix volume divided by the total volume and the porosity is defined as 1-bone volume fraction.
The woven bone may become highly mineralized to compensate for the poor organization, but woven bone is generally weak and inferior to the lamellar bone.
Bone lining cells are also retired osteoblasts but they have been escaped from being trapped in bone and remained on the surface.
www.bsu.edu /web/jkshim/bone/bone.htm   (899 words)

  
 Bone
A long bone such as the femur, consists of a centre piece, the shaft (diaphysis) and a thickened head (epiphysis) at each end.
The ground substance of bone is arranged in concentrated layers (lamellae) round the small canals which run parallel to the long axis (shaft) of the bone.
Red blood cells are manufactured in the red bone marrow, which is situated in the spongy tissue at the ends of long bones.
www.botany.uwc.ac.za /sci_ed/grade10/mammal/bone.htm   (711 words)

  
 Bone Structure
Bone is also a good starting point because it illustrates the principle of hierarchical structure function that is common to all biological tissues.
Cortical bone is found primary is found in the shaft of long bones and forms the outer shell around cancellous bone at the end of joints and the vertebrae.
Conversely, all bone tissue for the purpose of classic continuum analyses is considered to be a solid material with effective stiffness at the 0th structure.
www.engin.umich.edu /class/bme456/bonestructure/bonestructure.htm   (4608 words)

  
 Bone and Joint Infections
In long bones of children bacteria tend to lodge in the small end vessels that form sharp loops near the epiphyses.
Long bone acute infections: chills, fever and malaise.
Acute purulent frontal sinusitis that spreads to the frontal bone causing edema of the forehead (Pott’s puffy tumor).
www.kcom.edu /faculty/chamberlain/Website/lectures/lecture/Bone.htm   (3056 words)

  
 Quantitation of bone rotation in 3D
The long axis of the bone and the normal vector of the horizon were established from their respective segmented voxels using a principal axis transformation (PAX) analysis (15, 16).
The bone radius, defined as the perpendicular distance from the long axis to the bone surface, was measured at regularly spaced angles around and at regularly spaced positions along the bone axis.
Although the long axis provided a useful constraint for the coregistration process, the use of a long axis was itself a simplification because the configuration of long bones is not truly linear.
splweb.bwh.harvard.edu:8000 /pages/papers/tsao/bone.html   (3741 words)

  
 SLIBS Bone Website--Introduction: Overview
Bones such as the femur are known as long bones.
In contrast the bones of the brain case are termed flat bones, membrane bones, or dermal bones.
Your long bones began this endochondral process before you were born and if you are about 20 years of age as you read this, the process is about over.
www.trinity.edu /rblyston/bone/intro1.htm   (587 words)

  
 MedlinePlus Medical Encyclopedia: Long bones
A long bone is a bone that has a shaft and 2 ends and is longer than it is wide.
Long bones have a thick outside layer of compact bone and an inner medullary cavity containing bone marrow.
All of the bones in the arms and legs, except the patella, and bones of the wrist, and ankle, are long bones.
www.nlm.nih.gov /medlineplus/ency/imagepages/9582.htm   (197 words)

  
 BME 332: Bone Structure-Function
The main features of trabecular bone structure at the 1st level are the high porosity and the intricate architecture and orientation of the complicated rod and plate structure of trabeculae.
However, a significant difference between cortical bone 1st level structure and trabecular bone 1st level structure is the substantial variation in 1st level trabecular bone structure compared to cortical bone structure.
This is a measure of the volume fraction of bone, or equivalently the inverse of the porosity.
www.engin.umich.edu /class/bme332/ch9bone/bme332bone.htm   (8501 words)

  
 Long bones
Long bones are hard, dense bones that provide strength, structure, and mobility (such as the femur or thigh bone).
There are also bones in the fingers that are classified as "long bones," even though they are short in length.
Long bones contain yellow bone marrow and red bone marrow (which produces blood cells).
www.healthscout.com /ency/1/002249.html   (197 words)

  
 Avascular Necrosis-Bone Diseases and Disorders
Avascular necrosis (also called osteonecrosis, aseptic necrosis, or ischemic bone necrosis) is a disease that results from the temporary or permanent loss of blood supply to the bone.
Avascular necrosis may occur in any bone, but most commonly occurs in the ends of a long bone.
bone graft - a surgical procedure in which healthy bone is transplanted from another part of the patient's body into the affected area.
www.umm.edu /bone/avascul.htm   (667 words)

  
 Bone Development   (Site not responding. Last check: 2007-10-09)
Those bones forming from the intramembranous process are shown as a patchy grey, those in the head forming from the endochondral process are shown in fl.
The final length of a long bone is determined by the amount of growth at the epiphyseal plate (bottom).
The final thickness of a long bone is determined by the activity of two cell types (top).
classes.aces.uiuc.edu /AnSci312/Bone/Bonelect.htm   (2272 words)

  
 Orthoseek | Orthopedic Topics | Bone Tumors
Unicameral bone cyst or solitary bone cyst occurs anywhere in the skeleton, but commonly in the upper part of the humerus (upper arm) and upper part of the femur (thigh bone).
Aneurysmal bone cyst (ABC) can occur anywhere in the body, but commonly in the posterior part of the spine, and the long bones.
Chondromyxoid fibroma is a bening tumor that occurs in the shaft of the long bone.
www.orthoseek.com /articles/bonetumors.html   (664 words)

  
 Bones and Knuckles - Dog Chew Bones
They are firmly attached to the bone but after a lot of work can be chewed off.
These bones are long lasting, great for cleaning teeth and will satisfy your pets desire to chew.
Each bone is 4-5 inches long, 1.5 to 2 inches thick, and weighs about 12 ounces.
www.sitstay.com /store/edibles/bones2.shtml   (485 words)

  
 eMedicine - Simple Bone Cyst : Article by Eu-Leong Harvey Teo, MBBS, FRCR   (Site not responding. Last check: 2007-10-09)
The cause of growth arrest is uncertain and may be the result of fracture associated with the cyst, iatrogenic (eg, surgical curettage of a simple bone cyst abutting the physis and damaging the physis in the process), or direct extension of the cyst through the physeal plate into the epiphysis.
In patients younger than 20 years, simple bone cysts are found in the humerus in 55-65%, in the femur in 25-30%, and rarely in the tibia, fibula, radius, and ulna.
The long axis of the lesion parallels that of the long axis of the tubular bone.
www.emedicine.com /radio/topic642.htm   (3085 words)

  
 Arthritis and the Long Bone
If the bone is the same temperature, then the injury occurred some time ago and healing is complete; any attempts to treat it will produce little results.
As long as it is there, this periodic 'pus' buildup will occasionally reoccur, and the knot around it will continue to grow bigger.
Almost all those knots on the inside of the cannon bone are due to interference from the opposite foot.
members.tripod.com /horsedoc_org/arthritis_long_bone.htm   (832 words)

  
 Radiographic long bone appearance in a child administered cyclical pamidronate -- Davies and Gregory 88 (10): 854 -- ...
Radiographic long bone appearance in a child administered cyclical pamidronate -- Davies and Gregory 88 (10): 854 -- Archives of Disease in Childhood
Radiographic long bone appearance in a child administered cyclical pamidronate
The effects of intravenous pamidronate on the bone tissue of children and adolescents with osteogenesis imperfecta.
adc.bmj.com /cgi/content/full/88/10/854   (339 words)

  
 Medical Dictionary: Long bone - WrongDiagnosis.com
Long bone: in vertebrate animals: a long cylindrical marrow-containing bone of a limb
Terms that may be interchangeable with Long bone:
The following list attempts to classify Long bone into categories where each line is subset of the next.
www.wrongdiagnosis.com /medical/long_bone.htm   (194 words)

  
 Long bone - Wikipedia, the free encyclopedia
There are five general classifications of bones: (1) Long bones, (2) Short bones, (3) Flat bones, (4) Irregular bones, and (5) Sesamoid bones.
bone: ossification (intramembranous, endochondral, epiphyseal plate), cycle (osteoblast, osteoid, osteocyte, osteoclast), types (cancellous, cortical), regions (epiphysis, diaphysis), structure (osteon/Haversian system, Haversian canals, endosteum, periosteum, Sharpey's fibres, lacunae, canaliculi, trabeculae, medullary cavity, bone marrow), shapes (
This page was last modified 08:46, 14 December 2006.
en.wikipedia.org /wiki/Long_bone   (311 words)

  
 Long Thigh Bone   (Site not responding. Last check: 2007-10-09)
And happen to look at my dolphin bone.
It reminds me of the long curved backs of dolphins
And all the music left is in my bones—
www.atlantareview.com /Staff/Thighbone.htm   (86 words)

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