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1. Hip Fracture
- www.osteoporosis-centre.org
- Hip Fracture.
- This short review focuses on hip fracture and its assessment (se diagram below), since for the patient it carries the most serious clinical consequences of all fractures and is associated with the major economic burden on the health care system. ...
- Hip fracture is related to a high degree of both morbidity and mortality, particularly for the elderly patient. ...
- Complications may arise from the fracture itself and the resulting surgical management and comorbidity. ...
- Hip fracture however is also related to both bone strength and mechanical stress placed on the bone. ...
- In the majority of cases hip fracture typically results from a fall. ...
- It has been proposed that the incidence of hip fracture is 85% explained by underlying bone mass and 15% by age. ...
- Since Laboratory measurement of BMD provides the most accurate assessment of actual bone mass, this value may be used to provide a prediction of future hip fracture, exactly as plasma cholesterol concentration is now used to indicate a risk of future cardiovascular disease. ...
- Studies have established that bone density at the actual femoral neck is the best predictor of hip fracture, in comparison to measurements at either the wrist, spine or calcaneus. ...
- 6-fold increase in risk of hip fracture. ...
- 3 times more likely to have a hip fracture than a woman whose density is 1 SD above the mean. ...
- Assessment of Hip Fracture Risk.
- The diagram below shows the 10 year % risk of cervical hip fracture based on bone mineral density (BMD) measured at the proximal femur for women over 50 years. ... If the woman already has had any fracture then the risk is increased equivalent to one extra decade of age - that is with a fracture at 55 years, the % risk would be similar to that at age 65 years.
- Estimating the risk of fracture in osteopenic patients. ...
2. FRACTURE
- mineral.galleries.com
- CONCHOIDAL FRACTURE .
- FRACTURE? .
- Fracture is a description of the way a mineral tends to break. ... Fracture occurs in all minerals even ones with cleavage, although a lot of cleavage directions can diminish the appearance of fracture surfaces. ... Is the broken area smooth? Irregular? Jagged? Splintery? These are some of the ways of describing fracture. ...
- Although many minerals break in similar ways, some have a unique fracture and this can be diagnostic. ...
- The most common fracture type is conchoidal. This is a smoothly curved fracture that is familiar to people who have examined broken glass. Sometimes described as a clam-shell fracture. Quartz has this fracture type and almost all specimens that have been broken, demonstrate this fracture type very well. ...
- Splintery is a fracture type that occurs in fibrous or finely acicular minerals and in minerals that have a relatively stronger structure in one direction than the other two. Chrysotile serpentine is a typical mineral with splintery fracture and kyanite is an example of a non-fibrous mineral that has this fracture. ...
- Earthy is a fracture that produces a texture similar to broken children's clay. ...
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3. FRACTURE
- mineral.galleries.com
- WHAT IS FRACTURE? .
- Fracture is a description of the way a mineral tends to break. ... Fracture occurs in all minerals even ones with cleavage, although a lot of cleavage directions can diminish the appearance of fracture surfaces. ... Is the broken area smooth? Irregular? Jagged? Splintery? These are some of the ways of describing fracture. ...
- Although many minerals break in similar ways, some have a unique fracture and this can be diagnostic. The most common fracture type is conchoidal. This is a smoothly curved fracture that is familiar to people who have examined broken glass. Quartz has this fracture type and a broken piece of quartz would be a good thing to examine if one wanted to see conchoidal fracture. ...
- Splintery is a fracture type that occurs in fiberous or finely acicular minerals and in minerals that have a relatively stronger structure in one direction than the other two. Chrysotile serpentine is a typical mineral with splintery fracture and kyanite is an example of a non-fiberous mineral that has this fracture. ...
- Earthy is a fracture that produces a texture similar to broken children's clay. ...
4. Problems That Can Occur During Fracture Healing
- www.hughston.com
- During Fracture Healing .
- If the fracture is severe, problems that slow the healing process can occur. ...
- How does a fracture heal? .
- This stage begins the day you fracture the bone and lasts about 2 to 3 weeks. ...
- At this point, the site of the fracture stiffens and new bone begins to form (see figure). ...
- Between 4 and 8 weeks, the new bone begins to bridge the fracture. ... By 8 to 12 weeks after the injury, new bone has filled the fracture. ...
- Beginning about 8 to 1 2 weeks after the injury, the fracture site remodels itself, correcting any deformities that may remain as a result of the injury. This final stage of fracture healing can last up to several years. ...
- The rate of healing and the ability to remodel a fractured bone vary tremendously for each person and depend on your age, your health, the kind of fracture, and the bone involved. ...
- However, when they occur, fracture problems are almost always a result of a severe injury. Compartment syndrome: Severe swelling after a fracture can put so much pressure on the blood vessels that not enough blood can get to the muscles around the fracture. The decreased blood supply can cause the muscles around the fracture to die, which can lead to long-term disability. ...
- Growth abnormalities: A fracture in the open physis, or growth plate, in a child, can cause many problems. ...
- Delayed union: A fracture that takes longer to heal than expected is a delayed union. ...
- Nonunion: A fracture that fails to heal in a reasonable amount of time is called a nonunion. ...
5. Fracture healing
- www.ucbones.com
- Fracture healing.
- Fracture of any bone in the skeleton is a painful injury sure to interfere with the function of the part. ...
- A fracture is any structural failure in bone. There is no difference between a "break" and a "fracture". There are several kinds of fracture patterns and many locations. ...
- A fracture is said to be "compound" when it punctures the skin and "closed" if it does not. ... The significance is that an open fracture invites the complication of infection. ...
- A fracture is described by its degree of displacement. ...
- Location of a fracture is important. ... A tibia or femur fracture in the leg may take 4 or 5 months to heal. ... A fracture in a joint surface is likely to cause late arthritis problems and these fractures are usually treated surgically unless completely non-displaced. ...
- Surgical treatment of fractures is normally designed to maintain the fracture in its normal position while it heals. ...
- In elderly patients internal fixation is usually left in place after fracture healing. ...
6. fracture - definition by dict.die.net
- dict.die.net
- Definition: fracture.
- 7 fracture n 1: breaking of hard tissue such as bone; "it was a nasty fracture"; "the break seems to have been caused by a fall" syn: break 2: (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other; "they built it right over a geological fault" syn: fault, geological fault, shift, break 3: the act of cracking something syn: crack, cracking v 1: violate or abuse; "This writer really fractures the language" 2: interrupt, break, or destroy; "fracture the balance of power" 3: break into pieces; "The pothole fractured a bolt on the axle" 4: become fractured: "The tibia fractured from the blow of the iron pipe" 5: break, as of a bone: "She broke her clavicle" 6: fracture a bone of: "I broke my foot while playing hockey" syn: break .
- Source: Webster's Revised Unabridged Dictionary (1913) Fracture \Frac"ture\ (?; 135), v. ... To cause a fracture or fractures in; to break; to burst asunder; to crack; to separate the continuous parts of; as, to fracture a bone; to fracture the skull. Fracture \Frac"ture\ (?; 135), n. ... fracture. ... ) The texture of a freshly broken surface; as, a compact fracture; an even, hackly, or conchoidal fracture. Comminuted fracture (Surg. ), a fracture in which the bone is broken into several parts. Complicated fracture (Surg. ), a fracture of the bone combined with the lesion of some artery, nervous trunk, or joint. Compound fracture (Surg. ), a fracture in which there is an open wound from the surface down to the fracture.
7. UNC Radiology Teaching File Musculoskeletal Section Case #1
- www.ibiblio.org
- Plain film of the cervical spine shows a fracture involving the posterior arch of C1. Axial CT scan through C1 confirms fractures through the posterior arch, and reveals fracture involving the anterior arch of C1 as well. ...
- The burst fracture of C1, or "Jefferson burst" fracture is a result of axial loading, with bilateral outward displacement of the lateral masses of C1. ...
- Isolated fracture of the posterior arch of C1 may result from hyperextension, with impaction of the posterior arch of C1 between the occiput and C2. This injury may be distinguished from the burst fracture of C1 by the involvement of only the posterior arch of C1. Diagnosis: Burst fracture of C1.
8. CNLD Fracture Page
- chaos.ph.utexas.edu
- Research in Fracture at the Center for Nonlinear Dynamics.
- The goal of research into fracture at the Center for Nonlinear Dynamics is to study fracture as a dynamical system; to understand how dynamics at small scales works out in phenomena at the macroscopic scale. ...
- Experiments: Many of our experiments have concerned the fracture of Plexiglas, glass, and other brittle amorphous materials. ... We are also investigating fracture instabilities in rubber, and quasi-static crack waves in silicon.
- Theory: The main accomplishments of theory have been to develop complete analytical solutions for the fracture of crystals. ... We have also worked out a detailed statistical mechanics of fracture. Current work involves self-healing cracks along interfaces, and the connection between fracture and friction.
- Numerics: We have developed a molecular dynamics code in MPI specially suited to studying fracture of materials with three-body interactions. ...
- Physical Review Focus Story on fracture experiments in single crystals of silicon.
- List of reprints on fracture that can be ordered from the Center for Nonlinear Dynamics.
- Friction and Fracture, (120K, pdf) How self-healing fractures between two objects can lead to sliding. ...
- Eric Gerde's Thesis on Friction and Fracture, (2700K, PostScript) How self-healing fractures between two objects can lead to sliding; this time with all the math included. ...
- Oscillating Fracture Paths in Rubber (300K, pdf) Why the edges of a balloon are wiggly. ...
- Dynamic fracture in single crystal silicon (316 K, pdf) Article by Jens Hauch, Marder, Dominic Holland, and Harry Swinney, comparing experiment and computations for rapid fracture in silicon, published in PRL. ...
- Instability in dynamic fracture (4. ... Summary of results on instabilities in dynamic fracture, with an emphasis upon experiment, but also containing pedagogical material on dynamic fracture from both continuum and atomic viewpoints. ...
9. Complications of Long Bone Fracture Healing in Dogs: Functional and Radiological Criteria for Their Assessment
- www.vfu.cz
- Complications of Long Bone Fracture Healing in Dogs: Functional and Radiological Criteria for Their Assessment.
- Zatloukal: Complications of Long Bone Fracture Healing in Dogs: Functional and Radiological Criteria for Their Assessment. ...
- The goal of our study was not only to detect the incidence of both minor and major complications in the long bone fracture treatment in dogs, but also establish a rate of radiographically apparent complications which can be functionally tolerable for the patients. ... Fracture management was performed in 156 dogs with 164 fractures. ... Complications of fracture healing in this group II were assessed. The complications were found mainly in cases with an interval between injury and fracture fixation longer than 4 days (c 2-test; p < 0. ... Clinically sound dogs (with excellent result of therapy) were able to functionally tolerate radiographic abnormalities in consequence of fracture treatment in 44. ...
- Fracture, bone healing, nonunion, delayed union, incidence, dog.
10. Fracture
- www.phys.ntnu.no
- Fracture .
- However, technology before the renaissance did contain explicit fracture-controlling procedures and devices. ... This shows an intuitive understanding of fracture mechanics. ...
- When the microcracks have formed, there will now be a competition between the weak spots of the material and the fracture tips that carry high stress: Will new microcracks open because of the weak spots that remain or will the existing microcracks grow because of the stress enhancement at their tips? .
- Professor Hansen pondering a fracture running through the Physics Department. ...
- We have studied fracture from a fundamental point of view since the mid-eighties. Rather than focusing on the properties of specific materials, we have searched for the general features of fracture growth. As described above, disorder initiates the fracture process, but eventually, it the cracks determine how the stress field develops and the stress field determines how the cracks develop. ... This hints at there being universal features in the fracture process - universal in the sense that they do not depend on the material. ...
- Some Ongoing Projects on Fracture:.
- Hydro-fracture .
- Fracture of disordered solids, statistical physics of oriented damage .
11. Colles fracture
- chorus.rad.mcw.edu
- Colles fracture.
- radial fracture in distal 2 cm .
- +/- ulnar styloid fracture .
- most common fracture in this region .
- Related CHORUS documents: wrist fractures Barton fracture chauffeur's fracture scaphoid (navicular) fracture avascular necrosis (AVN) Bankart deformity .
12. Fracture treatment
- www.unfallchirurgie-marl.de
- Bone fracture treatment using the ASIF method.
- The society for questions concerning osteosynthesis (ASIF) has derived a system of operativ bone fracture treatment from the well-known stages of bone fracture healing. Special stabilizing methods, based on a biological and mechanical law of bone fracture healing processes, are a very usefull alternativ to the well known plaster treatment. The conservative method of tearment using plaster bandage leads to a stiffening of the joints next to the fracture. This often causes a development of a fracture disease, which could result in stiff joints, loss of muscle tissue and decalcification of the bone.
- The stabilizing operation of a bone fracture by screwing, plating or nailing allows an instant movement therapy treatment of all affected joints, a stengthening of muscle tissues and sometimes the patient is even able to partly put weight onto the limbs. ...
- The operative bone fracture teatment has not completely replaced the conservative teatment using plasterbandage. ...
- The operative treatment of bone fracture doesnt speed up the healing of the bone. ...
- The attribute biological signals, that in an operativ bone fracture treatment one has to pay special attention to biological laws next to mechanical aspects, such as stability of the area of fracture.
- What are the biological laws? The maintenance or rather the reconstuction of blood circulation in bone tissue is the absolutely vital prerequisite for the healing of the fractured bone; mechanical stability the prerequisite for the essential deposition of calcification in the replacement tissue, the callus, or the prerequisite for the undisturbed revascularisation of bone forming cells, the osteoblasts (vascularizing of new blood vessels from one fracture particular into the next).
- The anatomical repositioning of several fracture particals leads inevitably to a disturbance in bloodcirculation, due the to the exposition of fracture parts, which relates to the more or less seperation of vessels carrying soft parts from the bone. ... this method isnt unbiological, but takes the biological stages of fracture healing less into consideration, due to its technical nature. ... The bridging technique holding the fracture area together causes only minor problems in the blood circulation of single fragments, because the fragments stay mainly untouched. Both techniques, the anatomical repositioning and the bridging fixation method are indications in fracture treatment. ... The modern term biological osteosynthesis is for this reason an unfortunate terminologie as both techniques have to take the biology of fracture healing into consideration.
- History of the socalled biological osteosynthesis: In 1981, the German society or trauma surgery discussed in Berlin the internal bridging osteosynthesis without repositioning of particle fracture areas as an alternative to internal fixation of fracture particles repositioning anatomically(1). ...
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