Lumbar segmental mobility disorders: comparison of two methods of defining abnormal displacement kinematics in a cohort of patients with non-specific mechanical low back pain

J Haxby Abbott¹ , Julie M Fritz² , Brendan McCane³ , Barry Shultz⁴ , Peter Herbison⁵ , Brett Lyons⁶ , Georgia Stefanko⁷ and Richard M Walsh⁸

¹  Director, Clarity Clinical Research Consultants, Dunedin, New Zealand

²  Division of Physical Therapy, College of Health, University of Utah, 520 Wakara Way, Salt Lake City, UT 84108, USA

³  Computer Science Department, University of Otago, PO Box 56, Dunedin, New Zealand

⁴  College of Health, University of Utah, Salt Lake City, UT 84108, USA

⁵  Department of Preventive and Social Medicine, University of Otago, PO Box 913, Dunedin, New Zealand

⁶  Radiology Department, Southland Hospital, Southland District Health Board, Ivercargill, New Zealand

⁷  Dunedin Hospital, Otago District Health Board, Dunedin, New Zealand

⁸  Dunedin School of Medicine, University of Otago, Dunedin, New Zealand