Morphotypes

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The anatomy of the endosted canal of the upper end of the femur should be known :

Is it a random anatomy ?

Is there a standard morphotype allowing the use of lined implants with different sizes ?

Esop Ha
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The work of NOBLE and FESSY shows that there are 3 types of morphotypes : a standard morphotype, a cylindrical or stove pipe morphotype and a conical or champagne glass morphotype.

Standard

Conical

Cylindrical

Esop Ha

Esop Ha

Esop Ha

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La morphoadaptation

The above morphometric data is needed to solve the "container/content" dilemma and appreciate the bone / implant suitability.

An other words, should the bone be adapted to the prosthesis, or the prosthesis to the bone. This is what we have called morphoadaptation.

Morphoadaptation helps achieve the purpose : performing a purely metaphysis anchoring, without any shaft fastening, in order to spread the stress evenly.

The insufficient adaptation of femur parts often explains the migrations, thigh pain, stress shielding effects and even a surprising weakness of massive prostheses that are too attached shaft-wise, and not enough metaphysis-wise.

That is how the ESOP HA concept was born, and resulted in the two-part femur prosthesis, introducing the metaphysiary-shaft modularity in first intention femoral rods and allowing morphoadaptation./DIV>

 

Esop ha
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