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T2 Humeral Nailing System Operative Technique - Stryker

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Ordering Information – Instruments<br />

Bixcut<br />

Typical Standard<br />

Reamer Ø14mm<br />

C le a r a nc e a re a :<br />

32% of cross section<br />

Bixcut<br />

Reamer Ø14mm<br />

Clearance area :<br />

59% of cross section<br />

Bixcut<br />

49<br />

Complete range of modular and<br />

fixed-head reamers to match<br />

surgeon preference and optimize<br />

O. R. efficiency, presented in fully<br />

sterilizable cases.<br />

Large clearance rate resulting from reduced number<br />

of reamer blades coupled with reduced length of<br />

reamer head to allow for effective relief of pressure<br />

and efficient removal of material 3 .<br />

Cutting flute geometry optimized to lower pressure<br />

generation 3 .<br />

Forward- and side-cutting face combination produces<br />

efficient material removal and rapid clearance 3 .<br />

Double-wound shaft transmits torque effectively and<br />

with high reliability. Low-friction surface finish aids<br />

rapid debris clearance 3 .<br />

Smaller, 6 and 8mm shaft diameters are designed to<br />

reduce IM pressure.<br />

Studies 1 have demonstrated that<br />

the pressures developed within<br />

the medullary cavity through the<br />

introduction of unreamed IMnails can<br />

be far greater than those devel oped<br />

during reaming − but this depends<br />

very much upon the design of the<br />

reamer.<br />

After a three year development study 2<br />

involving several universities, the<br />

factors that determine the pressures<br />

and temperatures developed during<br />

reaming were clearly established.<br />

These factors were applied to the de -<br />

velopment of advanced reamers that<br />

demonstrate significantly better per -<br />

form ance than the best of previous<br />

designs 3.<br />

1 Jan Paul M. Frolke, et al. ;<br />

Intramedullary Pressure in Reamed Femoral<br />

<strong>Nailing</strong> with Two Different Reamer Designs.,<br />

Eur. J. of Trauma, 2001 #5<br />

2 Medhi Moussavi, et al.;<br />

Pressure Changes During Reaming with Different<br />

Parameters and Reamer Designs,<br />

Clinical Orthopaedics and Related Research<br />

Number 373, pp. 295-303, 2000<br />

3 Andreas Speitling;<br />

Intramedullary Reamers, commented slides of<br />

internal test report, Sep 1999

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