In Vitro Measurements of Porcine Anterior Column Units under Free Swelling

David A. Reiter, Nesrin Sarigul-Klijn, Munish C. Gupta, Fadi A. Fathallah

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The objectives of this study are to present a 2-D optical method for measuring gross kinematics of porcine anterior column units (ACUs) exposed to swelling with no applied load, provide a detailed error analysis of the 2-D optical measurement technique, and present a 2-D radiographic technique for measuring the distribution of x-ray intensity through an axial slice of the disc. The 2-D optical technique was sufficient for detecting the flexion-extension behavior of the ACUs tested. The error analysis concluded that the use of a second camera to quantify out of plane movement of the specimen world greatly improve the accuracy of the measurement of angle. The 2-D radiographic technique provided limited information on changes in intradiscal material. It was also limited in its accuracy and dependability (i.e., only 5 out of 13 specimens provided radiographs suitable for this analysis). The results of this study indicate that a relationship might exist between the flexion-extension behavior observed from swelling and intradiscal shifts of matter. Further work is needed to confirm this relationship.

Original languageEnglish
Pages (from-to)875-880
Number of pages6
JournalJournal of Biomechanical Engineering
Issue number6
StatePublished - Dec 2003


Dive into the research topics of 'In Vitro Measurements of Porcine Anterior Column Units under Free Swelling'. Together they form a unique fingerprint.

Cite this