Re: ENG>FRA Calcar replacement property of an implant

[Guest guest]

Hello Eliane,

This (from Wheeless) might help:

http://www.wheelessonline.com/ortho/calcar_femorale

Calcar Femorale

----------------------------------------------------------------------

----------

- Discussion:

- dense vertically oriented bone that originates in posteromedial

portion of femoral shaft under lesser trochanter;

- it radiates laterally toward posterior aspect of

greater trochanter;

- it reinforces the femoral neck posteroinferiorly;

- calcar femorale fuses w/ posterior aspect of femoral neck

superiorly and extends distally anterior to the lesser trochanter

and fuses w/ posteromedial aspect of the femoral

diaphysis;

- calcar femorale is thickest medially & thins as it passes

laterally;

- in literature regarding hip arthroplasty, ***medial cortex of

femoral neck*** has frequently been mistakenly labeled as the calcar;

Sue

>

> Dear all,

> I am currently translating the manual of an orthopedic surgical

planification software. An example is given for the selection of

different properties of an implant used in Hip surgery. One of these

properties is the Calcar Replacement (options to select in the

software for this property are calcar replacement and none).

> I have found quite a lot of information regarding Calcar

replacement stems in English, but I cannot find anything reliable in

French. Could someone help?

> Many thanks in advance

> Eliane

>

>

>

>

>

[Guest guest]

Yes Eliane, that is my understanding - the implant corrects the

calcar defect.

e.g.

The calcar replacement femoral component for total hip arthroplasty:

design, uses and surgical technique.

WH, JR.

A new femoral component for total hip arthroplasty (THA) has been

designed for use in patients in whom the calcar region is missing,

hence called the calcar replacement device. Experience with its use

in 18 hips has indicated that common causes for calcar deficiency

requiring this implant are resorption of the calcar region secondary

to failure of a prior THA, settling of an endoprosthesis or

destruction by tumor. The use of a conventional femoral component in

these situations is not recommended because of the lack of adequate

bony support. The device is also valuable in restoring leg length in

cases of substantial bone loss in the proximal part of the femur. In

an entirely different indication, this device may be used to restore

hip motion in patients with severely restricted movement secondary to

extensive heterotopic ossification. In three of four hips with this

condition, excision of the heterotopic bone and use of the calcar

replacement device achieved restoration of an arc of 75 degrees or

more in the flexion-extension plane.

I have also found " calcar " used in a reputable French article

reproduced here:

http://osteopathe-montpellier.com/index.php?tag=fontes

" éperon de Merkel " looks correct but doesn't seem to be commonly used.

http://www.med.univ-rennes1.fr/cgi-bin/iw/dossier.pl?F+1402

Another possibility:

http://srvsofcot.sofcot.com.fr/Apcort/conf/94_46/art01/art01_fs.htm

La résultante des forces en compression transmises à la tête fémorale

sera concentrée à la base du col suivant le ***pilier antéro-interne

cortical*** (calcar des anglo-saxons).

Voilà le fruit d'une recherche rapide. Ceci dit, je ne connais pas le

terme français utilisé pour ce dispositif.

Happy hunting :-)

Sue

> >

> > Dear all,

> > I am currently translating the manual of an orthopedic surgical

> planification software. An example is given for the selection of

> different properties of an implant used in Hip surgery. One of

these

> properties is the Calcar Replacement (options to select in the

> software for this property are calcar replacement and none).

> > I have found quite a lot of information regarding Calcar

> replacement stems in English, but I cannot find anything reliable

in

> French. Could someone help?

> > Many thanks in advance

> > Eliane

> >

> >

> >

> >

> >