Methodological quality of a systematic review on physical therapy for temporomandibular disorders: influence of hand search and quality scales

The validity of a systematic review depends on completeness of identifying randomised clinical trials (RCTs) and the quality of the included RCTs. The aim of this study was to analyse the effects of hand search on the number of identified RCTs and of four quality lists on the outcome of quality assessment of RCTs evaluating the effect of physical therapy on temporomandibular disorders. In addition, we investigated the association between publication year and the methodological quality of these RCTs. Cochrane, Medline and Embase databases were searched electronically. The references of the included studies were checked for additional trials. Studies not electronically identified were labelled as “obtained by means of hand search”. The included RCTs (69) concerning physical therapy for temporomandibular disorders were assessed using four different quality lists: the Delphi list, the Jadad list, the Megens & Harris list and the Risk of Bias list. The association between the quality scores and the year of publication were calculated. After electronic database search, hand search resulted in an additional 17 RCTs (25%). The mean quality score of the RCTs, expressed as a percentage of the maximum score, was low to moderate and varied from 35.1% for the Delphi list to 54.3% for the Risk of Bias list. The agreement among the four quality assessment lists, calculated by the Interclass Correlation Coefficient, was 0.603 (95% CI, 0.389; 0.749). The Delphi list scored significantly lower than the other lists. The Risk of Bias list scored significantly higher than the Jadad list. A moderate association was found between year of publication and scores on the Delphi list (r = 0.50), the Jadad list (r = 0.33) and the Megens & Harris list (r = 0.43)

Reliability of detecting 'onset of pain' and 'submaximal pain' during neural provocation testing of the upper quadrant

BACKGROUND AND PURPOSE: Conflicting results have been reported with regard to the reliability of neural tissue provocation tests and it is unclear whether repeated testing affects the test results. In the present study, the stability and reliability of the occurrence of 'onset of pain' and 'submaximal pain' throughout the range of motion during neurodynamic testing was analysed, in both a laboratory and a clinical setting. METHOD: A repeated-measures study design within and between sessions was used. In the laboratory and clinical settings, the base neurodynamic test for the median nerve was performed during a single session on a total of 27 patients with neurogenic cervico-brachial pain. In addition, the base test and three common variations were performed on two occasions by two examiners on 10 asymptomatic subjects in laboratory conditions only. Patients indicated the moment of 'submaximal pain' occurrence, whereas asymptomatic subjects indicated 'onset of pain' and 'submaximal pain'. Corresponding angles at the elbow were recorded by use of an electrogoniometer. RESULTS: In the asymptomatic group, the intra- and inter-tester reliability within the same session was excellent (intraclass correlation coefficient (ICC2.1 > or = 0.95; standard error of measurement (SEM) or = 0.69; SEM or = 0.98; SEM < or = 3.4 degrees). Consequently, from a statistical perspective, improvements in range of motion as small as approximately 7.5 degrees may be interpreted meaningfully. No significant trend due to repeated testing could be observed when three consecutive repetitions were analysed. CONCLUSIONS: Pain provocation during neurodynamic testing is a stable phenomenon and the range of elbow extension corresponding with the moment of 'pain onset' and 'submaximal pain' may be measured reliably, both in laboratory and clinical conditions

A qualitative assessment of shoulder girdle elevation during the Upper Limb Tension Test 1

The ‘feel through range’ and the ‘end-feel’ of the elbow extension, and the elevation of the shoulder girdle during the upper limb tension test for the median nerve are considered important in clinical decision making. As no objective measurements have been published regarding these parameters, a special device was designed in order to obtain objective information on the force by which the shoulder girdle is elevated during the test. The purpose of this technical note is to describe the technical aspects of the device and its practical application. In a pilot study, five asymptomatic subjects have been assessed. The relationship between the elevation of the shoulder girdle and the range of elbow extension has been analysed. The data of five subjects and representative curves of one subject are presented. All five subjects demonstrate a considerable increase in force elevating the shoulder girdle. The results show that the device can be used to measure the force by which the shoulder girdle is elevated throughout the test. Although the number of subjects and the number of repetitions is limited, the data suggest that the method is accurate and that the phenomenon of shoulder girdle elevation during the upper limb tension test in asymptomatic subjects is consistent

Measuring small linear displacements with a three-dimensional video motion analysis system: Determining its accuracy and precision

Objectives: To determine accuracy, precision, and smallest detectable difference for a three-dimensional (3D) video motion analysis system specifically configured for measuring small and slow displacements within a small measurement volume (0 7 x 0 5 x 0 3m). Design: Repeated measurements with random sequence of conditions. Setting: Rehabilitation research laboratory. Intervention: A reference sliding device was used to control cyclic displacements of two reflective markers over 5 calibrated ranges (l, 3, 10, 30, and 60mm). Nine cycles were performed for each of 9 conditions (3 directions x 3 zones). Four cameras recorded all trials on tapes, which were digitized with a Kinemetrix system. Main Outcome Measures: Change in distance of the moving markers relative to a third static marker was averaged over 50 frames per trial. Mean error, mean absolute error, and intertrial and intratrial standard deviations (SDs) were calculated for each zone and direction. Results: For 810 trials, mean error and absolute error were, respectively, 034mm and 094 mm. The mean intertrial and intratrial SDs and 99% confidence interval were .047mm (CI = ± 121mm) and 030mm (CI = ± .077mm). The corresponding smallest detectable differences were .171 mm and 109 mm. Conclusion: Motion analysis configured for registration within small volumes allows measurement of minuscule displacements with great accuracy and may therefore be suitable for many applications in rehabilitation research other than gait analysis.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

The immediate effects of a cervical lateral glide treatment technique in patients with neurogenic cervicobrachial pain

Study Design: Randomized clinical trial. Objectives: To analyze the immediate treatment effects of cervical mobilization and therapeutic ultrasound in patients with neurogenic cervicobrachial pain. Background: Different treatment modalities have been described for patients with neurogenic cervicobrachial pain. Although it has been suggested that a more specific approach, like cervical mobilization, would be more effective, effect studies are scarce. Methods and Measures: Twenty patients with subacute peripheral neurogenic cervicobrachial pain were assessed. Besides other criteria, patients were included if a cervical segmental motion restriction was present which could be regarded as a possible cause of the neurogenic disorder. Patients were randomly assigned to a mobilization or ultrasound group. Mobilization consisted of a contralateral lateral glide technique. The range of elbow extension, symptom distribution, and pain intensity during the neural tissue provocation test for the median nerve were used as outcome measures. Results were analyzed using a 2-way mixed-design ANOVA. Results: Significant differences in treatment effects between the 2 groups could be observed for all outcome measures (P≤.0306). For the mobilization group, the increase in elbow extension from 137.3° to 156.7°, the 43.4% decrease in area of symptom distribution, and the decreased pain intensity from 7.3 to 5.8 were significant (P≤.0003). For the ultrasound group, there were no significant improvements (P≥.0521). Conclusions: When a cervical dysfunction can be regarded as a cause of the neurogenic disorder or as a contributing factor that impedes natural recovery, a cervical lateral glide mobilization has positive immediate effects in patients with subacute peripheral neurogenic cervicobrachial pain. This movement-based approach seems preferable to ultrasound