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dome vs. single medial-lateral radius configuration

English translation: two different designs for patella prosthetics

05:48 Apr 25, 2004
English language (monolingual) [PRO]
Medical - Medical: Instruments / Knee joint prosthesis
English term or phrase: dome vs. single medial-lateral radius configuration
Could you please explain me what the difference between dome vs. single medial-lateral radius configuration is?

Patellar Components: The patellar components are available in resurfacing and recessed configurations as well as all-plastic and metal-backed designs. Dome and single medial-lateral radius configurations of the patellar components include concentric and modified offset designs.
Bone Augmentation Components: The bone augmentation components are available in wedge and block configurations to fill bone defects encountered during total knee reconstruction. The components are initially cemented to the appropriate femoral or tibial component of the corresponding total knee design and then the assembly is cemented to the prepared underlying bone.
Modular Stem Extensions: The modular stem extensions are available in a variety of stem lengths and diameters. After removal of the cement plug from the appropriate femoral or tibial component, the stem extension is assembled via the locking taper to the component and is secured with the associated locking screw utilizing torque wrench and screw driver.
Barbara Piela
Local time: 08:33
Selected answer:two different designs for patella prosthetics
Explanation:
There are different possible designs for prosthetic devices, see the following article about factors affecting choice of dedign:
http://www.home.duq.edu/~millermark/knee_kinetics/paper.html

One of the possible shapes is the dome, see:
This study evaluates the clinical and radiographic results of an all-polyethylene, biconvex, *dome-shaped patellar prosthesis*
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&d...

And another shape is the single medial-lateral radius, see
Use of the *Single Medial/Lateral Radius Design* in Cemented Total Knee Arthroplasty: Clinical and Radiographic Results at 5-Year Follow-up

These clinical and radiographic findings suggest that devices with a single medial/lateral radius design (increased femorotibial contact)
may minimize the potential for the generation of polyethylene wear debris in total knee arthroplasty.
http://www.europe.stryker.com/st-index/st_pag_medic-home/st_...

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Note added at 4 hrs 57 mins (2004-04-25 10:46:15 GMT)
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Actually, my answer should read *patella prostheses*, prosthetics being the discipline, not the implant.
Selected response from:

Melanie Nassar
United States
Local time: 09:33
Grading comment
Thanks a lot!
4 KudoZ points were awarded for this answer



SUMMARY OF ALL EXPLANATIONS PROVIDED
3two different designs for patella prosthetics
Melanie Nassar


  

Answers


4 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5
two different designs for patella prosthetics


Explanation:
There are different possible designs for prosthetic devices, see the following article about factors affecting choice of dedign:
http://www.home.duq.edu/~millermark/knee_kinetics/paper.html

One of the possible shapes is the dome, see:
This study evaluates the clinical and radiographic results of an all-polyethylene, biconvex, *dome-shaped patellar prosthesis*
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&d...

And another shape is the single medial-lateral radius, see
Use of the *Single Medial/Lateral Radius Design* in Cemented Total Knee Arthroplasty: Clinical and Radiographic Results at 5-Year Follow-up

These clinical and radiographic findings suggest that devices with a single medial/lateral radius design (increased femorotibial contact)
may minimize the potential for the generation of polyethylene wear debris in total knee arthroplasty.
http://www.europe.stryker.com/st-index/st_pag_medic-home/st_...

--------------------------------------------------
Note added at 4 hrs 57 mins (2004-04-25 10:46:15 GMT)
--------------------------------------------------

Actually, my answer should read *patella prostheses*, prosthetics being the discipline, not the implant.

Melanie Nassar
United States
Local time: 09:33
Native speaker of: English
PRO pts in category: 16
Grading comment
Thanks a lot!
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