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Bone Screws in Orthopaedic Surgery ... | 合法醫療器材資訊網

Bone Screws in Orthopaedic Surgery ...

In1958,MauriceMüllerandotherSwisssurgeonsformedtheAO/ASIF...Pitchisthelineardistancetravelledbyascrewforonefullturnofthescrew.

 Bone Screws in Orthopaedic Surgery ...

Bone Screws

Rajesh Purushothaman, Associate Professor, Medical College, Kozhikode, India

Screw is a cylinder with spiral threads running on its outer surface. It converts torsional forces into compression. The primary functional objective in the design of a screw is to dissipate and distribute the mechanical load. Thread design should maximise initial contact, enhance surface area, dissipate and distribute stresses at the screw-bone interface and increase the pullout strength. Screws can be used for attachment of implants to bone, bone to bone fixation or for soft tissue fixation or anchorage. In conventional plates they act by increasing the friction between the plate and the bone. Newer locking plates do not depend on the friction between the plate-bone interface; it acts as an internal fixator by using locking of screw head into the reciprocal threads of the plate to form a ...

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AOASIF | 合法醫療器材資訊網
AO/ASIF. Acronym, Definition. AO/ASIF, Association for Osteosynthesis/Association for the Study of Internal Fixation ... Read More
Screws Form and function | 合法醫療器材資訊網
An appropriate length of screw needs to be chosen. Too short─it will not gain full purchase in the bone. Too long─it may cause problems by irritating ... Read More
History of the AO and its global effect on operative fracture ... | 合法醫療器材資訊網
由 P Matter 著作 · 1998 · 被引用 41 次 — In 1958 a group of Swiss general and orthopaedic surgeons established the AO (Arbeitsgemeinschaft für Osteosynthesefragen) or the Association of the Study ... Read More
Screws Form and function | 合法醫療器材資訊網
An appropriate length of screw needs to be chosen. Too short─it will not gain full purchase in the bone. Too long─it may cause problems by irritating ... Read More
Bone Screws in Orthopaedic Surgery ... | 合法醫療器材資訊網
In 1958, Maurice Müller and other Swiss surgeons formed the AO/ASIF ... Pitch is the linear distance travelled by a screw for one full turn of the screw. Read More
cortical lag screws | 合法醫療器材資訊網
Description of cortical lag screws. ... To ensure full thread purchase the tip of the screw should protrude 1–2 mm through the opposite cortex. Read More
AO Foundation | 合法醫療器材資訊網
The foundation had its origins in a Swiss study group, Arbeitsgemeinschaft für Osteosynthesefragen (German for working group for bone fusion issues) or AO, ... Read More
AO Screw? | 合法醫療器材資訊網
Arbeitsgemeinschaft Osteosynthesefragen. English translation: Association for the Study of Internal Fixation, though I think a more literal ... Read More
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