Leg alignment for surgical parameter measurement in hip...

Details Leg alignment for surgical parameter measurement in hip... Leg alignment for surgical parameter measurement in hip...

2011-06-07

2011-06-07

Hoekstra, Jeffrey G (Department: 3736)

Surgery

Diagnostic testing

Measuring anatomical characteristic or force applied to or...

C600S587000, C600S592000, C600S594000

Reexamination Certificate

active

07955280

ABSTRACT:
A CAS system and method comprises a first reference in fixed relation with the pelvis and a registration tool. A sensor apparatus tracks the first reference and tool. A controller unit receives tracking data for the first reference and tool. A calculator tracks the pelvic frame of reference, and the tool to produce a femoral frame of reference at two sequential operative steps. A reference orientation adjustor receives tracking data for the pelvic frame of reference to orient the femoral frame of reference in a reference orientation with respect to the pelvic frame of reference, and to produce a reference adjustment value as a function of the reference orientation. A surgical parameter calculator receives tracking data from the tool to calculate surgical parameters as a function of the reference adjustment value.

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Murphy, Stephen B., Ecker, Timo M,Evaluation of a New Leg Length Measurement Algorithm in Hip Arthroplasty,. Clinical Orthopaedics and Related Research, No. 463, p. 85-89, © 2007 Lippincott Williams & Wilkins.

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