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Year : 2012? |? Volume : 1? |? Issue : 2? |? Page : 88-94 |
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Temporomandibular joint mobility in adult females with Ehlers-Danlos syndrome, hypermobility type (also known as joint hypermobility syndrome)
Andrea Ancillao1, Manuela Galli1, Claudia Celletti2, Marco Castori3, Giorgio Albertini4, Filippo Camerota2
1?Department of Bioengineering, Politecnico di Milano, Milano; Department of Paediatric Rehabilitation, IRCCS San Raffaele Pisana, Roma, Italy
2?Physical Medicine and Rehabilitation Division, Umberto I Hospital, Roma, Italy
3?Division of Medical Genetics, Department of Molecular Medicine, Sapienza University, San Camillo-Forlanini Hospital, Roma, Italy
4?Department of Paediatric Rehabilitation, IRCCS San Raffaele Pisana, Roma, Italy
Correspondence Address:
Andrea Ancillao
Department of Bioengineering, Politecnico di Milano, p.zza Leonardo Da Vinci 32, 20133, Milano
Italy
DOI: 10.4103/2278-9588.105697
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Context: It is well-known that subjects affected by Ehlers-Danlos Syndrome (EDS), hypermobility type/Joint Hypermobility Syndrome are characterized by severe joint hypermobility with recurrent joint dislocations and chronic pain and biomechanical dysfunction of the temporo-mandibular joint (TMJ). Aims: The study aims to measure TMJ mobility in EDS subjects to quantitatively characterize the TMJ dislocation during specific tasks as well as head adjustments, already documented by literature by observational techniques. Materials and Methods: Female EDS subjects and age matched controls were asked to perform simple opening-closing movements of the mandible. Kinematics data was recorded and analyzed through an optoelectronic motion capture system. Some parameters of the motion were studied: range of motion of the condyles, range of motion of the chin, aperture angle, movement speed, and frequency. Statistical Analysis Used: The statistical t-test was used to compare results from pathological group to the control group. Results: Significant differences, between EDS group and controls, were found for the backward rotation of the head, lateral range of motion of the chin, frequency, and velocity. Results were in accordance with the clinical observations. The results not only confirmed that EDS subjects back-rotate the head while performing the opening-closing task but also quantified the entity of this behavior. Conclusions: The method we proposed is noninvasive and is able to analyze mandible kinematics. It may be used by clinicians to assess the healthy status of TMJ, to quantify mobility, and hypermobility of the mandible and to help diagnosis of TMJ dysfunctions. |
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