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Analysis of Radial Head Implant Length with Use of Contralateral Elbow Radiographs.
JBJS Essent Surg Tech
Hand and Upper Limb Centre, St. Joseph's Health Care, University of Western Ontario, 268 Grosvenor Street, London, ON N6A 4L6, Canada. E-mail address for G.S. Athwal:
Published: February 2012
Introduction: This article describes a technique in which measurements are obtained from radiographs of the contralateral, normal elbow to predict the magnitude of overlengthening resulting from use of a metallic radial head prosthesis.
Step 1 Obtain Bilateral Elbow Radiographs: Obtain bilateral digital anteroposterior radiographs of the elbows that are orthogonal to the forearm in 45° of flexion and neutral forearm rotation.
Step 2 Perform Radiographic Measurements Of The Contralateral Normal Elbow: Draw the angle on the radiograph of the normal elbow.
Step 3 Perform Radiographic Measurements Of The Radial Head Implant: Draw the same lines and angle and perform the same measurements on the implant radiograph.
Step 4 Calculate Radial Head Implant Length: The virtual length of the native radial head implant () is subtracted from the virtual length of the radial head implant (), which results in the magnitude of the radial head implant overlengthening in millimeters: () - () = overlengthening.
Results: The radiographic measurement technique was validated in a cadaveric study.
What To Watch For: IndicationsContraindicationsPitfalls & Challenges.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6554091 | PMC |
| http://dx.doi.org/10.2106/JBJS.ST.K.00029 | DOI Listing |
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