Comparing the Effectiveness of the Muscle Energy Technique and Kinesiotaping in Mechanical Sacroiliac Joint Dysfunction: A Non-blinded, Two-Group, Pretest–Posttest Randomized Clinical Trial Protocol
Article information
Abstract
Study Design
Two-group, pretest–posttest randomized clinical trial.
Purpose
To evaluate the efficacy of the muscle energy technique (MET) and Kinesiotaping (KT) in addition to conventional physiotherapy among patients with mechanical sacroiliac joint dysfunction (SIJD).
Overview of Literature
Patients with SIJD suffer from lower back and gluteal pain, as well as stiffness, due to restricted pelvic joint movement. To restore function and reduce pain among individuals with mechanical SIJD, the MET and KT may be helpful. However, a limited number of studies have compared MET and KT in mechanical SIJD.
Methods
A total of 40 male and female participants aging between 30 and 50 years experiencing unilateral pain around the gluteal area, groin area, and lower limbs for more than 4 weeks but less than 1 year will be selected. Patients will then be randomized into two groups: METCp (n=20) and KTCp groups (n=20). The METCp group will receive MET along with conventional physiotherapy, while the KTCp group will receive conventional physiotherapy with KT. Both groups will receive three alternating days of treatment per week that will continue for 4 weeks. The modified Oswestry Disability Index, a digital pressure algometer, and sacroiliac joint motion testing will be used for evaluation. Between- and within-group pre- and post-intervention results for mechanical SIJD were compared using the Wilcoxon signed-rank test/paired t-test and Mann-Whitney U -test/independent t -test.
Results
Modified Oswestry Disability Index, digital pressure algometer, and sacroiliac joint motion will be measured at baseline, 2nd week during intervention, and 4th week at the end of intervention
Conclusions
The present study will provide data regarding the effects of MET and KT among patients with mechanical SIJD.
Introduction
Sacroiliac joint dysfunction (SIJD) is the most common cause for nondiscogenic pain. Mechanical SIJD is mainly characterized by pain in the sacroiliac joint (SIJ) area due to stiffness and decreased mobility of SIJ, also called hypomobility. The pain becomes pronounced while standing up from seated position, standing, walking, and lifting objects and is felt on same side (unilateral) at which the SIJ is involved [1]. The SIJ, which bears approximately 60% of the body weight, is involved in several painful conditions related to the pelvis and lower extremities. SIJD, which may lead to biomechanical alterations in the structures around the pelvis [2], is the most common source of lower back pain affecting 70%–85% of adults. Accordingly, 13%–30% of patients with lower back pain have SIJD, while 72.3% of those with lumber disc herniation have the same [3].
SIJD has been mainly associated with pain and hypoor hypermobility. Several studies have explored different treatment options for SIJD. Accordingly, Laslett [4] found that manual therapy with lumbopelvic stabilization is a promising technique that helps improve overall quality of life. Another study by Shinde and Jagtap [2] revealed significant improvements in the muscle energy technique (MET), hot moist pack, mulligan mobilization, and mulligan taping groups. Al-Subahi et al. [5] also reported that manipulation, exercise, and Kinesiotaping (KT) were effective in treating pain, disability, and pelvic asymmetry in SIJD. Another study by Yoo [6] showed that gluteus medius strengthening exercises can help reduce SIJ pain.
The MET includes soft tissue manipulation methods consisting of controlled isometric and/or isotonic contractions designed to improve normal physiologic function and decrease pain. The MET can be described as forces exerted by the patient against the therapist’s counter force, which could results in maximum muscle contraction [2]. KT has also been used to reduce pain and stabilize the alternating structures associated with SIJD [7]. Although MET can be an effective treatment for SIJD, several studies have reported that KT alone does not have much effect on SIJ pain. Hence, the present study seeks to compare the effects of KT and MET in addition to conventional physiotherapy among patients with mechanical SIJD.
Materials and Methods
1. Research design and ethics
This is a parallel design, non-blinded, two-group, pretest– posttest randomized clinical trial involving patients with mechanical SIJD. The protocol was approved by the Ethics Research Committee of the Maharishi Markandeshwar (Deemed to be University) (protocol ID: MMDU/ IEC/1370). The study has been registered successfully in the World Health Organization International Clinical Trials Registry (NCT03940287) on 4 May 2019 and obtained its universal trial number (U111-1232-1305) on 16 April 2019. The study was performed in accordance with the Indian Council of Medical Research (2017) National Ethical Guidelines for biomedical and health research involving human participants and the ethical principles for medical research involving human subjects stated in the Declaration of Helsinki (revised 2013).
2. Participants
Participants from the recognized tertiary teaching center at Mullana, Ambala, Haryana will be recruited between August 2019 and March 2020 (data collection between October 2019 and February 2020). All participants will be asked to sign an informed consent before the intervention that shall be provided in the local language with which the patient is comfortable. Confidentiality will be ensured by assigning codes for data collection, with only the primary researcher holding key to participant codes in each group.
3. Eligibility criteria
According to the International Association for the Study of Pain criteria [8], the inclusion criteria will be as follows: both male and female patients aging between 30 and 50 years, pain in the lower back, gluteal and groin area, and lower extremity lasting for more than 4 weeks but less than 1 year [5], restricted SIJ motion determined through clinical testing, and apparent leg length discrepancy.
Patients with any medical conditions that would make exercise difficult, such as pelvic bone fractures, pelvic metallic implants (endoprostheses), SIJ inflammation (e.g., sacroiliitis), somatoform disorders, pregnancy, inflammatory bowel disease, and malignancy, will be excluded [9].
4. Randomization, allocation, and blinding
A total of 40 eligible participants will be randomized to the MET and conventional physiotherapy group (METCp group) and KT and conventional physiotherapy group (KTCp group) via block randomization using the sequentially numbered opaque sealed envelope method. Blocks will have even numbers with a 4×10 (40) matrix, suggesting a total of four blocks with 10 rows. Subjects will then be allocated into each block using a random allocation sequence. Thereafter, subjects will be allocated to experimental 1 group (METCp) and experimental 2 group (KTCp). No blinding was done in this study given that all procedures and outcome measures will be conducted and assessed by therapist herself. The schematic Consolidated Standards of Reporting Trials flow chart for the study protocol (MET-KET) is displayed in Fig. 1.
5. Enrolment and baseline measurements
Baseline characteristics of each patient will be determined by the physiotherapist through standardized assessment pro forma. All physical examinations will be performed before proceeding with the intervention. Measures such as demographic profile (age, gender, height, weight and medical history), socioeconomic status, personal habits, history of present illness, and pain history and comorbidities will be evaluated in the assessment pro forma for mechanical SIJD, after which pain associated with SIJD (digital pressure algometer), muscle strength (hand-held dynamometer), quality of life (modified Oswestry Disability Index) will be evaluated. Patient participation schedules for the trial will be determined in accordance with the guidelines provided by the Standard Protocol Items: Recommendations for Interventional Trials statement [10] (Fig. 2).
6. Sample size
Sample size was calculated using the G*Power tool (Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany; http://www.gpower.hhu.de/) for sample size calculations [11]. Digital pain pressure algometer values for studies related to SIJD was considered given that this is the primary outcome measure used herein. Mean post- (9.02) and preintervention (7.46) values were considered and further divided according to a standard deviation value of 1.62 to calculate the effect size (0.96) [12,13]. The level of significance will be set at 0.05. To obtain a power of 90% (β=10%), a sample size of n=15 in each group will be needed according to estimates using G*Power ver. 3.1.9.4 software (Heinrich-Heine-Universität Düsseldorf) [14]. Moreover, considering a 30% dropout rate, a final sample of n=20 in each group will be needed.
7. Interventions
After completing all assessments and obtaining baseline measures, the intervention will be conducted. Participant will be randomly assigned to the METCp group and the KTCp group. Each participant will undergo three sessions per week that will continue for 4 weeks. Schober’s test will be used to determine the lumbar range of motion. First, patients will be undergo seated flexion and standing flexion tests to identify the SIJD, after which pain intensity will be measured using a calibrated digital pain pressure algometer (ALGO-DS-01). Static stabilizer strength of the SIJ and quality of life will then be measured using a hand-held dynamometer (hydraulic) and the modified Oswestry Disability Index, respectively [15].
1) Muscle energy technique application
The METCp group will undergo the MET together with conventional treatment. MET will be applied for anterior and posterior innominate rotation around the pelvis and for weakened muscles like the piriformis. For anterior iliac rotation, patients will be placed in the prone position with the affected leg brought over the edge of the table by flexing the hip as shown in Fig. 3. Thereafter, one hand will be used to stabilize the sacral area, while the other hand will be used to support hip flexion and aid toward greater flexion until a barrier is sensed. The patient will then be asked to apply 20% force against that applied by the therapist and hold that contraction for 10 seconds over 5 to 12 repetitions. For posterior rotation, the patient will be placed in the prone position with the therapist standing opposite to the dysfunctional side as shown in Fig. 4. The affected leg will be then extended until free movement ceases with the patient exerting 20% of their strength and holding the contraction for 10 seconds over 5 to 12 repetitions [16]. For piriformis application, the patient will be placed in the supine position close to the edge of the table with the affected side flexed at the hip and knee. The therapist will then stand facing the patient at the hip level as shown in Fig. 5. The patient should be close enough to the edge of the table for the therapist to stabilize the pelvis with their hand. The angle of hip flexion should not exceed 60°. One hand is then placed on the contralateral anterior superior iliac spine to prevent pelvic motion, while the other hand is placed against the lateral flexed knee as it is pushed into resisted abduction to contract the piriformis for 7–12 seconds. Treatment will be provided on three alternating days per week that will continue for 4 weeks [17]. The MET of the protocol titled “Manisha’s-muscle energy technique (M-MET) treatment protocol for mechanical sacroiliac joint dysfunction patients” by Manisha Sarkar, Manu Goyal, and Asir John Samuel was copyrighted under the Copyright Office of the Government of India with unique registration no. L-85162/2019 dated 3rd September, 2019 (copyright filed with diary no., 10909/2019-CO/L dated 15th July, 2019). The detailed description for M-MET is displayed in Table 1.
2) Kinesiotaping application
The KTCp group will receive KT together with conventional physiotherapy. Accordingly, KT will be applied to the piriformis muscle and SIJ. This tape will be applied in the shape of an “I” to both sides of the spine from the sacrum to the anterior superior iliac spine. For SIJ taping, the same 5-cm KT tape will be used and applied from below the posterior sacroiliac spine to the opposite side. Here, the patient will be placed in a standing position as shown in Fig. 6. For piriformis application, the patient will be placed in a side lying position 7 where the effected leg will be placed uppermost with hip in flexion, adduction, and internal rotation as displayed in Fig. 7. The therapist will position near the level of the pelvis, while the base of the tape will be placed over the contralateral part of the sacrum, forming a “Y” strip with minimum tension attached over the greater trochanter of the ipsilateral femur [18]. Patients will undergo KT treatment 3 times a week for 4 weeks to decrease pain and increase stability [7]. The kinesiotape application technique titled “Manisha’s kinesiotape (M-KT) application protocol for patients with mechanical sacroiliac joint dysfunction” by Manisha Sarkar, Manu Goyal, and Asir John Samuel was copyrighted under the Copyright Office of the Government of India with unique registration no L-88904/2020 filed with diary no., 15442/2019-CO/L dated 30th September, 2019. A detailed description of the KT application (M-KT) is provided in Table 2.
3) Conventional physiotherapy
Both groups will undergo conventional physiotherapy. Before undergoing the intervention, both groups will be given hydrocollator packs for at least 5–15 minutes [19].
8. Outcome measures
All outcomes will be assessed at baseline and 2 and 4 weeks after the intervention, with a follow-up assessment 4 weeks thereafter. All instruments used for assessment during the intervention should have good validity and reliability. Here, the primary outcome measures will be assessed using a digital pain pressure algometer and hand-held dynamometer, while secondary outcome measures will be assessed using the modified Oswestry Disability Index.
1) Pain intensity
Pain intensity, which is associated with SIJD, will be measured using a calibrated digital pain pressure algometer (ALGO-DS-01) in patients with mechanical SIJD. The digital algometer is a computer-sized force gage that is highly accurate. The ALGO-DS-01 was selected for the assessment of pain among patients with mechanical SIJD given its reliability and validity as a tool for assessing SIJD. Inter-rater reliability for the pressure pain algometer was calculated using the intraclass correlation coefficient, with results showing a moderate to good response (0.62–0.84) [20].
2) Muscle strength
Piriformis muscle strength will be evaluated by measuring the maximum isometric voluntary contraction using a (hydraulic) hand-held dynamometer, which has better validity than manual muscle testing and an isokinetic dynamometer. Moreover, a hand-held dynamometer is portable and more easy to operate [21].
3) Quality of life
Quality of life will be measured by using the modified Oswestry Disability Index in individuals with mechanical SIJD. This is an extremely important tool used to measure a patient’s permanent functional disability. The total score ranges from 0 to 50, with each section having a total possible score of 5. Patient can be further subcategorized into five groups according to their total score: 0%–20% (minimal disability), 20%–41% (moderate disability), 41%–60% (severe disability), 61%–80% (crippled), and 81%–100% (bedridden). The modified Oswestry Disability Index has a minimum change of 15.5%. This measure has been proven to have good validity for detecting changes in the SIJ, with a minimum difference of 13–15 indicating clinical significance [22].
9. Data analysis
All data will be collected and analyzed by the primary researcher. Baseline characteristics of eligible participants will be presented using descriptive statistics. Normality of the collected data will be established using the ShapiroWilk test. Based on data normality, descriptive statistics will be expressed as mean±standard deviation or median and intra-quartile range. Within-group comparisons will be conducted using paired t-tests or the Wilcoxon signedrank test, while and between-groups comparisons will be conducted using independent t-test or the Mann-Whitney U-test. The level of significance was set at 0.05 for all analyses. Statistical analysis will be performed using the IBM SPSS statistical software ver. 22.0. (IBM Corp., Armonk, NY, USA).
1) Data management
Data will be entered into Microsoft Office Excel 2010 (Microsoft Corp., Redmond, WA, USA) and stored in a desktop without an internet connection to help prevent unauthorized data access. The final data will also be restored on a password-protected non-rewritable compact disc read only memory, with only the primary researcher and data analysts having knowledge of the password. Data will be overseen by the chairman of Student Project Committee, Maharishi Markandeshwar Institute of Physiotherapy and Rehabilitation, Maharishi Markandeshwar (Deemed to be a University), Mullana.
2) Data and Safety Monitoring Committee
Safety data will be overseen by the Data and Safety Monitoring Committee, which is under the oversight of the chairman of the Student Project Committee of Maharishi Markandeshwar Institute of Physiotherapy and Rehabilitation, Maharishi Markandeshwar (Deemed to be University), Mullana. This committee is independent from the primary researcher and plays a role in monitoring the outcome of the intervention. Any adverse results occurring during the study will prompt interim analysis.
Results
Outcome measures for pain intensity, piriformis muscle strength, and quality of life in the patient with mechanical SIJD will be measured at baseline, 2nd week during intervention, and 4th week following intervention by, digital pain pressure algometer, (hydraulic) hand-held dynamometer, and modified Oswestry Disability Index, respectively.
Discussion
In the present study, individuals with mechanical SIJD will undergo the MET and KT in addition to conventional physiotherapy. Studies have shown that the MET, which mainly involves various neurological mechanisms with stretch tissue tolerance, and KT, which exerts immediate therapeutic effects, help support the stability of normal physiologic mechanisms and decrease anterior pelvic tilting [23]. Another study showed that pelvic tilt taping had an immediate effect on individuals with SIJ pain [24]. Moreover, the MET, along with other techniques, has been shown to help restore pubic symphysis alignment among patient with of pelvis asymmetry [5,25], suggesting that the MET is effective in managing SIJ pain. However, no study has yet compared the effects of MET and KT in addition to conventional physiotherapy in patients with mechanical SIJD. The main mechanism for developing SIJD includes different unidirectional pelvic shear forces along with repetitive torsional forces and inflammation, which produces not only the lower back pain but also groin and gluteal pain. A single-blind, prospective, randomized control trial by Visser et al. [26], suggested that manual therapy should be the main treatment for SIJ-related leg pain apart from other physiotherapy protocols. Orakifar et al. [27] also found that manual therapy and exercise therapy were two common treatments for chronic back pain associated with SIJD. Accordingly, their study they found that manual therapy and stabilization exercises had similar effects on reducing pain and improving quality of life [27]. Unilateral inclination can be assessed using pelvic landmarks. To determine the innominate torsional asymmetry in SIJD, four clinical tests have been used, including the seated and standing flexion tests [28]. However, randomized clinical trials, which would be of considerable help in investigating SIJD, will need to consider a single component to address. Thus, the main objectives of the present study will be to apply the MET and KT in addition to conventional physiotherapy in order to discover various physiological changes in pain perception and muscle strength among individuals who suffering from SIJD. The main limitations of this study will be the allocation of participants from the same rehabilitation center considering its single-center design.
Given the very limited number of studies comparing the MET and KT, the present study will seek to compare the effects of both techniques among individuals with mechanical SIJD.
Conclusions
This protocol details the single-center clinical trial comparing the effects of MET and KT in addition to conventional physiotherapy on improving pain and quality of life among patients with mechanical SIJD.
Notes
No potential conflict of interest relevant to this article was reported.
Author Contributions
All the authors reconceived and designed the study, conducted research, provided research materials. MS drafted the manuscript. MG and AJS provided the content review. All the authors approved the manuscript.
Acknowledgements
The author acknowledges the Maharishi Markandeswar Institute of Physiotherapy and Rehabilitation, Maharishi Markandeswar (Deemed to be University) for the precious support and encouragement throughout the study. This study was supported by the Maharishi Markandeshwar (Deemed to be University) PG Thesis Grant (grant no., MMDU/18188014/2018). The study is being supervised by the third author, Asir John Samuel and co-supervised by, the second author, Manu Goyal. Related to this study protocol, two copyrights were registered with unique registration nos. L-85162/2019 and L-88904/2020 under the Copyright Office of the Government of India.