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The aim of this research is to find the effects of neural tension versus neural sliding technique on pain, cervical muscle endurance and hand grip strength in unilateral cervical radiculopathy. It will be a randomized controlled trial in which participants selected through non probability convenience sampling with age from 18 to 65 years having unilateral cervical radicular pain in upper limb since 3 months and any two of the following positive test Spurling's test, Distraction test and Upper Limb Tension Test. Participants will be randomly allocated, into three groups (A, B, and C). On the contrary, patients with any orthopedic or neurological conditions of cervical spine and shoulder joint, malignancy, cervical surgeries and bilateral cervical radiculopathies will be excluded from the study. Baseline measurement of all groups will be taken by using Numerical Pain Rating Scale (NPRS) for pain, Cranio-cervical Flexion Test for endurance and Hand-Held Dynamometer for hand grip strength. Group A will receive 7 neural tension technique, Group B will receive neural sliding technique, while Group C will receive both neural tension technique and neural sliding technique for 4 weeks (6 successive sessions). Both techniques (slider and tensioner) will be provided three sets in every session; Each set will be performed in a slow, oscillatory manner with 10 seconds rest between the sets. Posttest measurement will be taken after 4 weeks of treatment. SPSS 21 software will be used for data entry and analysis.
Full description
Cervical radiculopathy also known as "pinched nerve", is a neurological condition caused by compression of the cervical spine nerve and roots. It is basically a lower motor neuron and sensory demonstration of neurological dysfunction of the involved cervical nerve root. Cervical radiculopathy is most commonly caused by the herniation of the cervical spine intervertebral disc or any space-occupying lesion that may lead to nerve root inflammation or impingement. Other common causes of cervical radiculopathy are spondylosis, trauma, osteoporosis, cervical instability, and sometimes oncological issues. Such problems either directly compress the cervical nerve roots or narrow the space of the vertebral foramen from where the cervical nerve root emerges which leads to neuritis, hypoxia, ischemia, fibrosis, edema, or decreased nerve mobility. Cervical radiculopathy has an average annual incident rate of 83 per 100,000 of the population with an increased prevalence in the fourth and fifth decade of life.
According to studies, the most commonly affected cervical nerve root is C7 followed by the C6 and C8. The clinical manifestation of cervical radiculopathy is quite broad involving motor and sensory changes in the upper extremity. Patients with cervical radiculopathy usually experience loss of sensation, tingling, numbness, motor defects in the neck and sometimes in the scapula, and pain in the arm and hand along the pathway of the nerve depending upon the location of the affected nerve root. The pain can be radiated both bilaterally and unilaterally into the arms, however, the prevalence of bilateral cervical radiculopathy is only 5 - 36%.
The symptoms of muscle weakness in the upper limb are often seen in patients with cervical radiculopathy. According to the principles of the kinetic chain, the upper limb is an integrated system consisting of different segments working together to accomplish the activities of daily living. In simpler words, the muscle weakness produced in any segment of the upper limb would result in generalized muscle weakness and ultimately decreased hand grip strength. To perform functional activities of daily living it is very important to maintain the grip strength of the upper extremity. But, to achieve the maximum grip strength the physical and physiological properties of nerve tissues need to be intact. Since reduced grip strength is often seen in patients with cervical radiculopathy, it becomes essential to administer an appropriate technique to rehabilitate its strength
Manual therapy techniques are considered effective in the treatment of cervical radiculopathy. Neurodynamic mobilization has been considered effective as a conservative management approach for the treatment of upper quadrant pain. It restores homeostasis in and around the neural tissues by improving the mechanical and neurophysiological integrity of the peripheral nerves, thus reducing pain and disability. Slider and tensioner are the two most commonly used neural mobilization techniques and a biomechanical distinction can be made between these two techniques. Neural mobilization plays an important role in returning to normal functional activities by restoring the range of motion and extensibility of the nervous system
Neurodynamic mobilization restores the neural tissues' ability to resist tension and stress by promoting the restoration of normal physiological function, decreasing pain, and improving function. The slider neurodynamic mobilization causes sliding movement in the neural tissue in correspondence to the nearby structures; distributing the compression and tension along the entire nervous instead of one particular region. On the other hand, tensioner neurodynamic mobilization causes tension in the neural tissue without surpassing the tissue elastic capacity that enhances nerve's viscoelastic properties. This procedure is done by taking the nerve, in the end, range of movement (elongated position), maintaining the position for a short duration, and then fully releasing the tension.
A systematic review of a randomized control trial was done by Papacharalambous C et al. in 2022 to evaluate the effectiveness of slider and tensioner neural mobilization techniques in the management of upper quadrant pain. The results of the study concluded that slider and tensioner neural mobilization techniques are quite effective in reducing pain in certain musculoskeletal conditions. Moreover, the results revealed that slider neural mobilization technique is more effective in the treatment of acute conditions than tensioner neural mobilization.
A randomized clinical trial was conducted by Shou MK et al. in 2022, to determine the effects of neural slider and contralateral cervical lateral glide in athletes with cervicobrachial pain syndrome. Thirty patients were recruited in the study that were divided into groups. One group received neural slider technique whereas the other received contralateral cervical lateral glide. The results revealed that both techniques are effective in improving pain and functional disability. However, the contralateral cervical lateral glide is more effective than the neural mobilization technique for patients with cervicobrachial pain syndrome.
Raval MM et al. conducted a comparative study in 2022 to determine the effect of neural sliding technique versus neural sliding technique on functional disability and pain in patients with cervical radiculopathy. A total of thirty patients were recruited for the study and later divided into two equal groups. Group A received neural tension mobilization while Group B received neural sliding mobilization. Outcome measure tools Numeric Pain Rating Scale, Neck Disability Index, and Patient Specific Functional Scale were used to access the patient before and after the treatment. The results of the study concluded that tensioner neurodynamic mobilization is more effective in reducing functional disability and pain than slider neurodynamic mobilization.
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• Unilateral radicular pain in upper limb since 3 months(10)
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• Any orthopedic or neurological conditions of cervical spine and shoulder joint
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30 participants in 3 patient groups
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Data sourced from clinicaltrials.gov
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