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Abstract
The purpose of this clinical case report was to describe the kinematic variables of movement that best discriminated between asymmetrical and symmetrical mandibular excursion patterns in a patient with myogenic temporomandibular dysfunction. Two mandibular movements (deemed to be asymmetrical and symmetrical by both patient and physiotherapist) were each recorded six times on three occasions at six, twelve, and 15 weeks after commencement of an exercise programme. The mandibular movements were captured with a 12-camera Motion Analysis System (Motion Analysis Corp., Santa Rosa, CA) with kinematic variables expressed in six degrees-of-freedom. A two-way analysis of variance (ANOVA) for repeated measures was used to analyze the data. The asymmetrical pattern was characterized by increased axial rotation and decreased sagittal rotation but with no differences in translation values when compared to those of the symmetrical pattern. The results support the clinician’s and patient’s judgment regarding differences in quality of mandibular excursion patterns made over the course of time.
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Notes on contributors
Gillian M. Johnson
Dr. Gillian M. Johnson qualified as a physiotherapist in 1972 and is currently senior lecturer and musculoskeletal team leader at the School of Physiotherapy, University of Otago, New Zealand. She graduated with a Master of Science in clinical anatomy in 1995 and a Ph.D. in the field of anatomy in 2004. Dr. Johnson’s collaborative links with the University of Otago’s School of Dentistry have extended over ten years, where she is involved in the assessment and treatment of patients in their multidisciplinary temporomandibular clinic.
Heather Coe
Ms. Heather Coe graduated with a Bachelor of Physiotherapy in 2004 (Otago, New Zealand) and was enrolled at the University of Otago at the time of this study. She is currently employed in the private sector as a physiotherapist with an interest in chronic musculoskeletal pain.
Rebekah Wirawan
Ms. Rebekah Wirawan graduated with a Bachelor of Physiotherapy in 2004 (Otago, New Zealand) and was enrolled at the University of Otago at the time of this study. She is currently working in the public hospital sector (Mid-Central Health) as a physiotherapist and has an interest in measurement and performance outcomes in musculoskeletal practice.
Leighton Wong
Mr. Leighton Wong graduated with a Bachelor of Physiotherapy in 2004 (Otago, New Zealand) and was enrolled at the University of Otago at the time of this study. He has a clinical interest in acute soft tissue trauma and physiotherapy management and is currently employed as a physiotherapist in the public health sector.
Christine Lee
Ms. Christine Lee graduated with a Bachelor of Physiotherapy in 2004 (Otago, New Zealand) and was enrolled at the University of Otago at the time of this study. She is now employed in a private musculoskeletalbased physiotherapy center in Auckland and has an interest in clinical biomechanics.
Eithne MacFayden
Dr. Eithne MacFayden graduated from Glasgow University in 1970 with a Bachelor of Dental Surgery and is a Fellow of Dental Surgery (1973) from the Royal College of Physicians and Surgeons. Dr. MacFayden is currently a senior lecturer in hospital dentistry in the Department of Oral, Diagnostic, and Surgical Sciences at the University of Otago’s School of Dentistry with a special interest in the assessment and management of temporomandibular dysfunction.