Cervical cord compression can arise due to a number of conditions of various origins. Neck pain, limited range of neck motion, pain in the upper extremities, severe balance difficulties, incontinence, and paralysis may be seen in cervical cord compression. A thorough neurological examination is crucial for making the initial diagnosis. Imaging studies, magnetic resonance imaging (MRI) and computed tomography (CT), are frequently necessary to identify the underlying etiology.
Presentation
Cervical cord compression is a term denoting a pathological process of the cervical spinal cord in which different pathological entities cause its compression. Cervical spondylotic myelopathy (CSM), a consequence of a degenerative process of the vertebrae and surrounding connective tissue that is primarily seen in elderly persons, is one of the most frequently mentioned causes [1] [2] [3]. The clinical presentation of cervical cord compression, particularly when CSM is the underlying culprit, can have an insidious course with early symptoms being mild neck stiffness and a limited range of neck motion, reduced hand dexterity, minor balance issues, clumsiness, and difficulties with performing easy tasks (handwriting, use of keys, holding the handrail while climbing up the stairs, or text messaging) [1] [3] [4]. It is not uncommon for patients to neglect early symptoms [4], but as the severity of compression increases more pronounced manifestations develop. Pain in the upper extremity, particularly the shoulder, either described as stabbing or dull can appear along with hand numbness [1] [3] [4]. Paresthesias and weakness eventually arise. A more severe form of cervical cord compression leads to inadequate sphincter control and paralysis [3] [4]. In rare cases, lesion of the ascending spinothalamic tract might cause referred pain to the lower back or the lower extremities termed funicular leg pain [2].
Workup
In order to make the diagnosis of cervical cord compression and establish the underlying cause, a comprehensive clinical approach is necessary. A properly conducted neurological examination is the crucial step for raising suspicion toward this entity [1] [3] [4] [5]. Several findings indicative of an ongoing pathological process involving the cervical spinal cord are [1] [3] [4] [5]:
- Hyperreflexia - A brisk triceps reflex accompanied by the absence of biceps and supinator reflexes are considered to be pathognomonic findings of cervical spondylotic myelopathy associated with cervical spondylosis at the C5-C6 interspace [1].
- Limited neck motion and pain - Extension of the neck is almost universally limited [4]. Lhermitte's sign, a generalized shock-like sensation produced after neck flexion, is another important sign of cervical cord compression [1].
- Gait changes - A positive Romberg test (the patient loses balance while standing with closed eyes and arms being stretched anteriorly) and abnormal findings during walking tests (heel-to-toe tandem walking, heel-walking, and toe-walking) are frequently observed [1] [3].
As soon as a presumptive diagnosis is made, imaging studies must be employed. Plain radiography of the cervical spine is of limited use, which is why magnetic resonance imaging (MRI) and computed tomography (CT) are recommended [1] [3] [4] [5]. These procedures can identify intrinsic spinal cord changes, tumors, herniated discs, skeletal abnormalities (CT is favored over MRI in this case), and determine the exact cause of the compression [1] [3] [4] [6].
Treatment
Treatment for cervical cord compression depends on the underlying cause and severity of symptoms. Conservative approaches include physical therapy, pain management, and medications to reduce inflammation. In cases where symptoms are severe or progressive, surgical intervention may be necessary to relieve pressure on the spinal cord. Surgical options vary but may involve removing bone spurs, herniated discs, or other structures causing compression.
Prognosis
The prognosis for cervical cord compression varies based on the cause and timeliness of treatment. Early diagnosis and intervention often lead to better outcomes, with many patients experiencing significant symptom relief. However, if left untreated, cervical cord compression can lead to permanent neurological damage. Regular follow-up and monitoring are essential to manage the condition effectively.
Etiology
Cervical cord compression can result from several conditions. Common causes include degenerative changes in the spine, such as osteoarthritis or herniated discs. Other causes might be traumatic injuries, tumors, or congenital abnormalities. Inflammatory conditions like rheumatoid arthritis can also contribute to spinal cord compression.
Epidemiology
Cervical cord compression is more common in older adults due to age-related degenerative changes in the spine. However, it can occur at any age, depending on the underlying cause. Men and women are affected equally, although specific causes like trauma may have different prevalence rates based on lifestyle factors.
Pathophysiology
The pathophysiology of cervical cord compression involves mechanical pressure on the spinal cord, which disrupts normal nerve function. This pressure can lead to reduced blood flow, inflammation, and damage to nerve cells. Over time, this can result in the loss of nerve function, manifesting as the symptoms observed in patients.
Prevention
Preventing cervical cord compression involves maintaining good spinal health. Regular exercise, proper posture, and ergonomic workspaces can help reduce the risk of degenerative changes. Avoiding neck injuries through safe practices in sports and daily activities is also important. For those with underlying conditions, regular medical check-ups can help detect early signs of compression.
Summary
Cervical cord compression is a condition where pressure on the spinal cord in the neck leads to various symptoms, including pain and neurological deficits. Early diagnosis and treatment are crucial for preventing long-term damage. Treatment options range from conservative management to surgical intervention, depending on the cause and severity of the condition.
Patient Information
If you suspect cervical cord compression, it's important to seek medical evaluation. Symptoms like neck pain, numbness, or weakness in the arms should not be ignored. A healthcare provider can perform necessary tests to determine the cause and recommend appropriate treatment. Maintaining a healthy lifestyle and being mindful of neck health can help prevent this condition.
References
- Young WF. Cervical spondylotic myelopathy: a common cause of spinal cord dysfunction in older persons. Am Fam Physician. 2000;62(5):1064-1070, 1073.
- Chan CK, Lee HY, Choi WC, Cho JY, Lee SH. Cervical cord compression presenting with sciatica-like leg pain. Eur Spine J. 2011;20(Suppl 2):217-221.
- Meyer F, Börm W, Thomé C. Degenerative Cervical Spinal Stenosis: Current Strategies in Diagnosis and Treatment. Dtsch Arztebl Int. 2008;105(20):366-372.
- Lebl DR, Hughes A, Cammisa FP, O’Leary PF. Cervical Spondylotic Myelopathy: Pathophysiology, Clinical Presentation, and Treatment. HSS J. 2011;7(2):170-178.
- Todd AG. Cervical spine: degenerative conditions. Curr Rev Musculoskelet Med. 2011;4(4):168-174.
- Yeung JT, Johnson JI, Karim AS. Cervical disc herniation presenting with neck pain and contralateral symptoms: a case report. J Med Case Rep. 2012;6:166.