The RS-4i Plus can treat virtually any type of musculoskeletal pain, with the most common listed below. If you don’t see the condition you’re looking for or want to discuss a specific case, we’re here to help. Schedule a meeting your Account Manager who can work with you to identify the most appropriate programs and pad placement based on your patient’s needs.   

  • How Electrotherapy Helps ACL Reconstruction Post-Operative:

    Following ACL reconstruction, Interferential Therapy (IFT) can help reduce pain, while Neuromuscular Electrical Stimulation (NMES) is used to activate and strengthen the quadriceps femoris, particularly the vastus medialis oblique (VMO), to support knee stability. Stimulating these muscles early in rehab prevents atrophy, promotes muscle re-education and restores functional range of motion. This aligns with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide)

    • Intersperse: 52, 60, 67, 74 

    • Muscle Stim: 57 

    • Alternating Stim: 20, 82 

    Recommended Pad Placement:

  • How Electrotherapy Helps Arthritis: 
    Manage arthritis symptoms by relieving joint pain with Interferential Therapy (IFT) and stimulating surrounding muscles with Neuromuscular Electrical Stimulation (NMES) to enhance circulation, which may reduce stiffness and helps maintain mobility in the affected joints. These effects align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement:  

  • How Electrotherapy Helps Arthroplasty:
    In post-operative arthroplasty care, Interferential Therapy (IFT) helps alleviate joint pain while Neuromuscular Electrical Stimulation (NMES) is used to strengthen surrounding musculature – such as the quadriceps and hamstrings for knee replacements or gluteus medius and minimus for hip replacements. This helps prevent muscle atrophy, support joint mechanics and enhance functional recovery. These outcomes align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide)

    • Intersperse: 52, 60, 67, 74 

    • Muscle Stim: 57 

    • Alternating Stim: 20, 82 

    Recommended Pad Placement:

  • How Electrotherapy Helps Carpal Tunnel Syndrome: 
    Carpal Tunnel Syndrome can be managed with Interferential Therapy (IFT) to relieve pain in the wrist and hand. Neuromuscular Electrical Stimulation (NMES) may be applied to the forearm and intrinsic hand muscles to improve circulation, which may help alleviate compression, and support functional recovery. This supports RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Cervical Disc Herniation: 
    Cervical disc herniation symptoms can be managed by using Interferential Therapy (IFT) to reduce pain and Neuromuscular Electrical Stimulation (NMES) to engage cervical paraspinals, upper trapezius, levator scapulae and rhomboids. Activating these muscles may help reduce muscle guarding, improve posture and relieve mechanical strain on cervical structures. These outcomes align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Cervical Facet Joint Syndrome: 
    Interferential Therapy (IFT) can reduce pain caused by cervical facet joint dysfunction, while Neuromuscular Electrical Stimulation (NMES) targets the cervical paraspinal muscles, upper trapezius and levator scapulae. These treatments can increase circulation, which may help alleviate stiffness and improve joint function. This supports RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Cervical Fusion Post-Operative: 

    Post-cervical fusion, Interferential Therapy (IFT) helps manage post-operative pain while Neuromuscular Electrical Stimulation (NMES) is applied to cervical paraspinals and scapular stabilizers to prevent atrophy and promote functional recovery. Activating these muscles can help restore posture and maintain neck mobility where appropriate. This supports RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Degenerative Disk Disease: 

    With degenerative disc disease, Interferential Therapy (IFT) interrupts persistent pain signals, while Neuromuscular Electrical Stimulation (NMES) targets lumbar paraspinals, gluteus medius and core stabilizers to reduce spasms. Activating these muscles around the spine may help slow degeneration-related functional decline. This supports RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Diabetic Neuropathy: 

    For diabetic neuropathy patients, Interferential Therapy (IFT) can be used to reduce pain, while Neuromuscular Electrical Stimulation (NMES) can be used to contract the muscles of the lower leg, such as the gastrocnemius, soleus, tibialis anterior and fibularis longus. Activating these muscles will help supply a flow of nutrient-rich blood and oxygen to the lower leg and foot, while expelling metabolic waste. This supports RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide)

    • Intersperse: 52, 60, 67, 74 

    • Muscle Stim: 57 

    Recommended Pad Placement:

  • How Electrotherapy Helps Disk Replacement Post-Operative: 

    After disc replacement surgery, Interferential Therapy (IFT) can help reduce post-surgical pain. Neuromuscular Electrical Stimulation (NMES) can be used to activate surrounding stabilizing muscles – such as the cervical or lumbar paraspinals, depending on the site – to prevent atrophy and re-educate muscle. This aligns with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Epicondylitis: 
    Epicondylitis (tennis or golfer’s elbow) can be addressed with Interferential Therapy (IFT) to reduce localized pain at the tendon insertion. Neuromuscular Electrical Stimulation (NMES) should be used on the forearm extensor and flexor muscle groups to enhance circulation, which may decrease tension and promote tissue healing. These effects support RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    • Muscle Stim: 57 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Foot Drop:

    By strategically placing electrode pads, natural foot movements can be replicated with alternating Neuromuscular Electrical Stimulation (NMES). For patients with foot drop, electrodes should be applied to the tibialis anterior to produce dorsiflexion, and to the gastrocnemius and soleus for reciprocal alternating contraction. Interferential Therapy (IFT) may also be used to reduce pain related to nerve compression. This approach helps improve range of motion,  increase circulation, re-educate gait mechanics and prevent atrophy. These outcomes align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide)

    • Intersperse: 52, 60, 67, 74 

    • Muscle Stim: 57 

    • Alternating Stim: 20, 82 

    Recommended Pad Placement:

    • Foot 2 (channel 1 top of foot only)

  • How Electrotherapy Helps Frozen Shoulder: 

    Shoulder conditions, such as Frozen Shoulder, are a primary reason why the RS-4i Plus includes alternating Neuromuscular Electrical Stimulation (NMES) as a treatment option. By strategically placing electrode pads, we can replicate natural shoulder movements. For instance, we can use two channels to contract the pectoralis major, pectoralis minor and serratus anterior to simulate protraction, and then we use an additional two channels to contract trapezius, rhomboids and latissimus dorsi to simulate retraction. By using “alternate” sets of these pads, the RS-4i Plus can help increase range of motion and decrease muscular atrophy. Interferential Therapy (IFT) may also be used to reduce pain. These outcomes align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    • Alternating Stim: 20, 82 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Lumbar Disc Herniation: 
    Ease pain from a lumbar disc herniation by using Interferential Therapy (IFT). Neuromuscular Electrical Stimulation (NMES) can target the lumbar paraspinals, gluteus medius and multifidus to decrease spasms and improve circulation, which may help restore mobility. These outcomes align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Lumbar Facet Joint Syndrome: 
    Interferential Therapy (IFT) can help reduce facet joint-related pain, while Neuromuscular Electrical Stimulation (NMES) targets lumbar paraspinals, gluteus maximus and transversus abdominis to increase circulation, reduce muscle spasm, re-educate muscle and increase range of motion. These outcomes align with the RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Lumbar Fusion Post-Operative: 

    Following lumbar fusion, Interferential Therapy (IFT) can work to relieve surgical site pain, while Neuromuscular Electrical Stimulation (NMES) helps activate lumbar paraspinals, gluteus medius, gluteus maximus and transversus abdominis muscles. This targeted muscle stimulation can help support postural control and compensate for reduced segmental motion. These effects align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Lumbar Multifidus Dysfunction: 
    The lumbar multifidus plays a key role in segmental spinal stability. Use Interferential Therapy (IFT) to reduce localized pain, followed by Neuromuscular Electrical Stimulation (NMES) to activate the multifidus and transversus abdominis muscles. This helps re-educate neuromuscular coordination which may restore segmental control and prevent compensatory strain. These benefits align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    • Muscle Stim: 57 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Myofascial Pain Syndrome: 
    Myofascial Pain Syndrome can be addressed with Interferential Therapy (IFT) to disrupt chronic pain signals. Neuromuscular Electrical Stimulation (NMES) should be applied to affected muscle groups – such as upper trapezius, levator scapulae, gluteus medius or erector spinae – depending on the location of trigger points. Activating these muscles and increasing circulation may help facilitate muscle relaxation and promote trigger point release. These effects support RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Patella Femoral Pain Syndrome:
    Patellofemoral pain can be reduced using Interferential Therapy (IFT), while Neuromuscular Electrical Stimulation (NMES) targets the quadriceps – especially the vastus medialis oblique (VMO) – to improve muscle function, which can aid in patellar tracking. Activating these muscles helps support knee alignment, reduce joint stress and restore function. This approach supports RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide)

    • Intersperse: 52, 60, 67, 74 

    • Muscle Stim: 57 

    Recommended Pad Placement:

  • How Electrotherapy Helps Plantar Fasciitis:

    For plantar fasciitis, Interferential Therapy (IFT) can reduce pain around the heel, while Neuromuscular Electrical Stimulation (NMES) activates the intrinsic foot muscles as well as the gastrocnemius and soleus to help improve foot mechanics, reduce fascial tension and promote healing through enhanced circulation. These benefits align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 


    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide)

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement:

  • How Electrotherapy Helps Radiculopathy: 
    Radiating pain, a major symptom of radiculopathy, can be managed using Interferential Therapy (IFT). Neuromuscular Electrical Stimulation (NMES) can be used to activate surrounding muscles to improve circulation and help restore neuromuscular control. This aligns with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    • Muscle Stim: 57 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Rotator Cuff Injury: 
    Rotator cuff injuries can be treated with Interferential Therapy (IFT) to help manage shoulder pain. Neuromuscular Electrical Stimulation (NMES) can be applied to the supraspinatus, infraspinatus, subscapularis and teres minor to activate muscles, which can help support shoulder stabilization and prevent muscular atrophy. This approach improves circulation, restores neuromuscular coordination and supports return to function. These outcomes align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Sciatica: 
    Sciatic nerve pain can be alleviated using Interferential Therapy (IFT) to interrupt pain signal transmission. Neuromuscular Electrical Stimulation (NMES) should focus on the gluteus maximus, piriformis and hamstring muscles to increase circulation and reduce spasm around the sciatic nerve. These effects support RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Spondylosis/Spondylolisthesis: 
    Spondylosis and Spondylolisthesis discomfort can be addressed using Interferential Therapy (IFT) to relieve pain. Neuromuscular Electrical Stimulation (NMES) targets supporting musculature – such as cervical or lumbar paraspinals, transversus abdominis and multifidus – to improve circulation, which may reduce stiffness, and prevent compensatory spasm. These outcomes align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Subscapular Pain: 
    Subscapular pain can be treated using Interferential Therapy (IFT) to reduce deep tissue pain, while Neuromuscular Electrical Stimulation (NMES) applied to the subscapularis, teres major and serratus anterior promote circulation, which may relieve tension and restore scapular mobility. These outcomes align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Thoracic Disc Herniation: 
    Thoracic disc herniations can benefit from Interferential Therapy (IFT) to interrupt pain signals and decrease nerve irritation. Neuromuscular Electrical Stimulation (NMES) should focus on thoracic paraspinals and scapular stabilizers such as the rhomboids and lower trapezius to reduce muscle guarding and improve posture. This supports RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Thoracic Facet Joint Syndrome: 
    Interferential Therapy (IFT) can alleviate thoracic facet joint pain, while Neuromuscular Electrical Stimulation (NMES) is used to activate thoracic paraspinals and postural muscles – including the lower trapezius and latissimus dorsi – to increase circulation and range of motion. This may help offload the facet joints, reduce stiffness and restore thoracic mobility. These benefits align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Thoracic Fusion Post-Operative: 

    After thoracic spinal fusion, Interferential Therapy (IFT) can help manage post-operative pain, while Neuromuscular Electrical Stimulation (NMES) should target thoracic paraspinals and scapular stabilizers. Activating these muscles can help preserve muscular support, prevent atrophy and re-train postural mechanics. This supports RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Thoracic Outlet Syndrome: 
    Manage thoracic outlet syndrome by using Interferential Therapy (IFT) to reduce nerve pain and Neuromuscular Electrical Stimulation (NMES) to work the surrounding muscles. Enhanced circulation and improved range of motion can relieve pressure and support healing. These outcomes align with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: 

  • How Electrotherapy Helps Trigger Point Pain: 
    Relieve trigger point pain by using Interferential Therapy (IFT) to interrupt pain signals and Neuromuscular Electrical Stimulation (NMES) to stimulate the tense muscles. This stimulation helps improve the circulation of nutrient-rich blood in the affected area, which may help release trigger points. It aligns with RS-4i Plus indications to relieve acute and chronic pain, reduce atrophy and spasm, increase circulation, re-educate muscle, and maintain or increase range of motion. 

    Recommended Treatment Programs: (Reference the RS Medical Protocol Guide) 

    • Intersperse: 52, 60, 67, 74 

    Recommended Pad Placement: