Limits...
Assessing the mobility of the mandibular condyle by sonography.

Chen HY, Wu SK, Lu CC, You JY, Lai CL - Patient Prefer Adherence (2014)

Bottom Line: To confirm that the probe did not move during mouth opening, a marker was placed between the skin and the ultrasonic probe as the landmark.The results demonstrated that the intrarater and interrater reliabilities in the within-image test were 0.986 and 0.970 and the reliabilities in the between-image test were 0.904 and 0.857, respectively.The standard errors of measurement in the within-image and between-image tests were 0.04 cm and 0.09 cm, respectively.

View Article: PubMed Central - PubMed

Affiliation: Department of Physical Therapy, Hungkuang University, Taichung, Taiwan.

ABSTRACT

Purpose: Traditionally, the measurement of the maximal mouth opening was regarded as the mobility of the temporomandibular joint. The information, however, was not reliable. Sonography was often used to diagnose disc displacement in the temporomandibular joint and its validity was well established. The tool was also appropriate for measuring the outcome of temporomandibular disorders management. Therefore, the purpose of the study was to examine completely the reliability and error for evaluating the mobility of the mandibular condyle by sonography. In addition, the existing methods were modified to improve the repeatability.

Patients and methods: The reliability examinations included between-image and within-image explorations to represent the reliabilities of the image capturing and the mobility measuring, respectively. Sixty-two subjects were recruited to receive ultrasonic examination for condylar mobility. The images of the condyle in mouth closing and opening were captured and the horizontal displacement of the condyles was measured as the anterior translation of the condyle. To confirm that the probe did not move during mouth opening, a marker was placed between the skin and the ultrasonic probe as the landmark.

Results: The results demonstrated that the intrarater and interrater reliabilities in the within-image test were 0.986 and 0.970 and the reliabilities in the between-image test were 0.904 and 0.857, respectively. The standard errors of measurement in the within-image and between-image tests were 0.04 cm and 0.09 cm, respectively.

Conclusion: Sonography is a reliable tool to assess condylar mobility and can be used to measure the treatment outcome for temporomandibular disorders.

No MeSH data available.


Related in: MedlinePlus

Flow chart of the reliability examination.Abbreviations: A, examiner A; B, examiner B.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4206250&req=5

f2-ppa-8-1419: Flow chart of the reliability examination.Abbreviations: A, examiner A; B, examiner B.

Mentions: The procedures of locating the positions and measuring the displacement between two mandibular condyles in mouth closing and opening were repeated twice on different days by the same examiner for testing the intrarater reliability; these were conducted twice in a day by two separate examiners for testing the interrater reliability. The reliability of examining the same image from one subject indicated the within-image investigation while the different images from the same subject indicated the between-image investigation to represent the reliabilities of the mobility measuring and the image capturing, respectively. Two examiners, who were physical therapists with experience of sonographic assessment for 1.5 years and 1 year, respectively, spent 2 weeks before formal examination becoming familiar with operating the ultrasound apparatus, associating the anatomy atlas with the sonography, and interpreting images. The flow chart of the reliability examination is shown in Figure 2.


Assessing the mobility of the mandibular condyle by sonography.

Chen HY, Wu SK, Lu CC, You JY, Lai CL - Patient Prefer Adherence (2014)

Flow chart of the reliability examination.Abbreviations: A, examiner A; B, examiner B.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4206250&req=5

f2-ppa-8-1419: Flow chart of the reliability examination.Abbreviations: A, examiner A; B, examiner B.
Mentions: The procedures of locating the positions and measuring the displacement between two mandibular condyles in mouth closing and opening were repeated twice on different days by the same examiner for testing the intrarater reliability; these were conducted twice in a day by two separate examiners for testing the interrater reliability. The reliability of examining the same image from one subject indicated the within-image investigation while the different images from the same subject indicated the between-image investigation to represent the reliabilities of the mobility measuring and the image capturing, respectively. Two examiners, who were physical therapists with experience of sonographic assessment for 1.5 years and 1 year, respectively, spent 2 weeks before formal examination becoming familiar with operating the ultrasound apparatus, associating the anatomy atlas with the sonography, and interpreting images. The flow chart of the reliability examination is shown in Figure 2.

Bottom Line: To confirm that the probe did not move during mouth opening, a marker was placed between the skin and the ultrasonic probe as the landmark.The results demonstrated that the intrarater and interrater reliabilities in the within-image test were 0.986 and 0.970 and the reliabilities in the between-image test were 0.904 and 0.857, respectively.The standard errors of measurement in the within-image and between-image tests were 0.04 cm and 0.09 cm, respectively.

View Article: PubMed Central - PubMed

Affiliation: Department of Physical Therapy, Hungkuang University, Taichung, Taiwan.

ABSTRACT

Purpose: Traditionally, the measurement of the maximal mouth opening was regarded as the mobility of the temporomandibular joint. The information, however, was not reliable. Sonography was often used to diagnose disc displacement in the temporomandibular joint and its validity was well established. The tool was also appropriate for measuring the outcome of temporomandibular disorders management. Therefore, the purpose of the study was to examine completely the reliability and error for evaluating the mobility of the mandibular condyle by sonography. In addition, the existing methods were modified to improve the repeatability.

Patients and methods: The reliability examinations included between-image and within-image explorations to represent the reliabilities of the image capturing and the mobility measuring, respectively. Sixty-two subjects were recruited to receive ultrasonic examination for condylar mobility. The images of the condyle in mouth closing and opening were captured and the horizontal displacement of the condyles was measured as the anterior translation of the condyle. To confirm that the probe did not move during mouth opening, a marker was placed between the skin and the ultrasonic probe as the landmark.

Results: The results demonstrated that the intrarater and interrater reliabilities in the within-image test were 0.986 and 0.970 and the reliabilities in the between-image test were 0.904 and 0.857, respectively. The standard errors of measurement in the within-image and between-image tests were 0.04 cm and 0.09 cm, respectively.

Conclusion: Sonography is a reliable tool to assess condylar mobility and can be used to measure the treatment outcome for temporomandibular disorders.

No MeSH data available.


Related in: MedlinePlus