Compex SP8.0 - Symptomatic Treatment of Musculoskeletal Pain

Musculoskeletal Conditions, Musculoskeletal Pain

Electrostimulation, Transcutaneous Electrical Nerve Stimulation (TENS), Stimulation of sensory nerves, Compex SP8.0, Gate control principle, Endorphinic TENS, Low Frequency TENS, High Frequency TENS

This post-market clinical study of the SP8.0 Compex device aims to comprehensively assess the safety and performance of the device when used in accordance with the approved Instructions for Use. The results of this study will also support the clinical evaluation of the next-generation wireless product currently under development. The Compex Consumer devices contain different programs, such as conditioning, fitness, recovery, massage, rehabilitation, and pain management. This study will utilize the Compex SP 8.0 pain management programs, with the aim of assessing the effectiveness of the treatment provided by the device in managing pain through different physiological mechanisms.

Subjects will be treated with the Compex device according to the intended use of the device and as per routine clinical practice. Clinical data will be collected in healthcare settings as part of the routine clinical practice and according to the study protocol. Additional data points will be recorded pre and post use of the advised treatment with the compex device using an electronic patient diary. Adult subjects who require symptomatic treatment of musculoskeletal pain (nociceptive pain or neuropathic/nociplastic pain), with a Numeric Pain Rating Scale (NPRS) score of 4 or more at baseline will undergo Electrical Nerve Stimulation with the Compex SP8.0 device at home for up to 4 weeks. The investigator will train subjects on how to use the device at home and a guide will be provided to each subject to help them when using the device at home. For all subjects the first treatment session will be performed by the investigator at the clinic. The assessment of pain level will be completed by the investigator during onsite visits: before treatment (Baseline Visit), after 2 weeks of treatment and at the 4 weeks/End of study visit. Additionally, subjects will be asked to record their level of pain before and immediately after each treatment session on an electronic diary. The assessment of the pain level experienced by the subjects will be performed using the Numeric Pain Rating Scale (NPRS). Subjects will be asked to rate the level of pain using a 0-10 scale, with zero meaning "no pain" and 10 meaning "the worst pain imaginable". The tests used to assess symptoms, compliance with treatment and satisfaction/usability of the device are: 1. Numeric Pain Rating Scale (NPRS) on a 0 to 10 scale 2. Usability/Satisfaction Questionnaire on a 4-point Likert scale 3. Electronic Compliance diary Participants will be stratified based on their type of pain (nociceptive vs. neuropathic/nociplastic) and then assigned within strata to one of the treatment groups: TENS HIGH FREQUENCY (50-150Hz) or TENS LOW FREQUENCY (5Hz) The diagnosis of the type of pain experienced by individual subjects will be performed by the investigator based on symptoms and physical examination in routine practice. Subjects suffering from chronic musculoskeletal pain will be allocated to the low frequency TENS group, those with acute neurogenic pain will be allocated to the high frequency TENS group. The following programs of pain management will be used according to the subjects assigned group: PROGRAMMING BASIC FREQUENCY TOTAL TIME PAIN MANAGEMENT TENS 50-150Hz 20 min EPICONDYLITIS/TENDINITIS 50-150Hz 20 min MUSCLE/NECK/BACK PAIN 5Hz 20 min The treatment with the Compex SP8.0 devices can be performed in addition to subjects prescribed rehabilitation exercises and during their functional activities. The recommendation would be to have 2 treatment sessions per day for a total of 4 weeks or until full recovery (Pain scored 0 on the NPRS). The minimum number of accepted treatments is at least 6 treatments per week. A lower number of sessions per week (less than 6 per week) will prompt the subjects to be considered in the intention to treat population but not in the per protocol data set. Subjects will be instructed to use the mi-function for each treatment session to optimize the treatment settings. Subjects will be asked to record each treatment session performed and pain scores experienced before and after treatment, on the subject's diary, in order to assess daily compliance to the scheduled treatment plan and to evaluate the instant and short-term effect of the treatment. The subjects will be evaluated at the study site for 4 scheduled onsite visits and 2 phone contacts as detailed in the study flowchart. Follow-up phone calls with the subjects will be performed on a regular basis. During the 4 weeks of treatment, 1 phone call per week will be performed with exception of the weeks when an onsite visit is scheduled. These regular contacts serve to remind the subject to follow the treatment plan and to complete the compliance diary. Additionally, during each phone call check-in, subjects will be asked to report if any issues/adverse events have occurred since the last visit or phone contact. The regular phone contact with subjects should help in keeping the adherence to the protocol and have a higher compliance to the treatment.

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United Kingdom