nerve damage, leading to permanent impairment and disability. Muscle weakness and atrophy at the base of the thumb can result in reduced dexterity. Patients may also experience chronic wrist and hand pain, which can potentially progress to complex regional pain syndrome. The most common complication of carpal tunnel surgery is the development of a neuroma in the palmar cutaneous branch of the median nerve. Other possible complications include hypertrophic scars, joint stiffness, dysesthesias, and incomplete resolution of symptoms (Sevy et al., 2023). Splinting and proper hand ergonomics are crucial in the rehabilitation of CTS. Therapists employ techniques such as ultrasound, iontophoresis, and paraffin wax to reduce swelling and relieve pain, though studies have shown mixed results regarding their effectiveness. Further high- quality research is needed to thoroughly evaluate these interventions. Nerve-gliding exercises, massage, and trigger point release have demonstrated significant improvements in muscle strength, pain reduction, and nerve conduction. Physical and occupational therapists should consider incorporating these methods into their treatment plans (Sevy et al., 2023). As CTS is the most common nerve entrapment neuropathy, affected individuals seek care from various healthcare specialties. If not promptly addressed, symptoms can become debilitating. Clinicians from diverse fields such as obstetrics, orthopedics, neurology, primary care, endocrinology, and rehabilitation therapy play a crucial role in diagnosing and managing CTS. Combined therapy may offer more significant benefits than any single treatment. Therefore, healthcare professionals must educate patients about the risks, benefits, and effectiveness of different treatment options for CTS and help them set realistic expectations regarding their outcomes. Effective communication among healthcare team members is essential to facilitate combined therapies, patient education, and timely treatment, ultimately helping patients regain normal function. A collaborative interprofessional team approach is vital in improving outcomes for CTS patients (Sevy et al., 2023).
and signs, are regarded as the gold standard for diagnosing CTS (Sevy et al., 2023). Imaging is required only when a structural abnormality is suspected. Further investigation may be necessary for potential structural issues like tumors or ganglion cysts. Ultrasound and magnetic resonance imaging (MRI) are the preferred methods (Sevy et al., 2023). The symptoms of CTS can mimic a variety of other musculoskeletal and nervous system disorders. When evaluating a patient with suspected CTS, the following conditions should be considered: ● Brachial plexopathy ● Cervical myofascial pain ● Cervical spondylosis ● Compartment syndrome ● Ischemic stroke ● Mononeuritis multiplex ● Multiple sclerosis ● Median neuropathy in the forearm ● Motor neuron disease ● Diabetic neuropathy ● Cervical radiculopathy ● Overuse injury ● Traumatic brachial plexopathy ● Radiation-induced brachial plexopathy ● Neuropathies ● Tendonitis CTS typically worsens over time and can lead to permanent median nerve damage. The syndrome can recur in up to one-third of patients within five years following surgery. Approximately 70% to 90% of mild to moderate CTS cases respond well to conservative treatments. However, many patients eventually require surgical intervention. Patients with CTS secondary to diabetes or a wrist fracture generally have a poorer prognosis than those without an identifiable underlying cause. Those with normal electrophysiological studies tend to have less favorable surgical outcomes and more complications compared to those with ● Tenosynovitis ● Thoracic outlet syndrome abnormalities in these tests. The detection of axonal loss in electrophysiological testing indicates a poor prognosis (Sevy et al., 2023). Complications of CTS can stem from the condition itself or from its treatments. CTS may cause irreversible median To better understand how carpal tunnel signs and symptoms manifest, a basic understanding of the anatomy and physiology of nerve tissue will aid our efforts. All nerves are composed of cells called neurons. Remember that a neuron is a single nerve cell, and a nerve is a bundle of neurons wrapped together. All neurons have three components that regulate nerve signal conductivity and protect anatomical structure from damage (Netter, 2022). These three parts are depicted in Figure 3. Figure 3: Three Parts of the Neuron
NERVE ANATOMY
elements, which include Nissl bodies, which are a site of protein synthesis within the cell body. A neuron damaged at the cell body will not regenerate . ● Dendrite : An appendage-like portion that conveys an electrical message into the cell body. The terminal branches of an adjacent axon will communicate with neighboring dendrites. Dendrite receptors receive chemical messages as a polarity switch creates a conductive electrical signal to take these messages into the cell body. A neuron damaged at the dendrite will not regenerate . ● Axon : The tail-like portion that conducts an electrical message away from the cell body. Polarity switches guide the chemical message down the axonal branch and toward the terminal portion. Gateways on the synaptic terminals send the chemical messages out toward the adjacent tissues. Axons vary in length from a few millimeters in the brain to several inches in the upper and lower limbs. The axons of myelinated neuronal tissue are covered by a lipid-based structure called the myelin sheath. This sheath is a protective wrapping that conducts electrical signals properly and prevents damage due to compression or tension forces. A neuron damaged at the axon with preservation of the cell body may slowly regenerate, at a rate of approximately a millimeter per month.
Parts of the neuron ● Cell body : The main portion of the cell that integrates electrical messages. Integration refers to the processing of the chemical pieces of the messages received. This portion contains the nucleus and the supporting cellular
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