Cervical Synringomyelia All are seen except
**Core Concept**
Cervical spondylotic myelopathy (CSM) is a condition characterized by progressive spinal cord damage due to cervical spondylosis, leading to various neurological symptoms. It is a common cause of spinal cord dysfunction in older adults.
**Why the Correct Answer is Right**
Cervical spondylotic myelopathy typically presents with a combination of symptoms, including neck pain, numbness or tingling in the hands or arms, weakness in the arms or legs, and bladder or bowel dysfunction. These symptoms occur due to the compression or stretching of the spinal cord and its surrounding nerves. The condition can be caused by a variety of factors, including degenerative disc disease, spinal stenosis, and spondylolisthesis.
**Why Each Wrong Option is Incorrect**
**Option A:** Cervical spondylotic myelopathy is often associated with degenerative changes in the cervical spine, including disc herniation and facet joint hypertrophy. This option is incorrect because it is a common feature of the condition.
**Option B:** While cervical spondylotic myelopathy can lead to a variety of neurological symptoms, including muscle weakness and atrophy, option B is incorrect because it is a general statement that does not specifically relate to the condition.
**Option C:** Cervical spondylotic myelopathy is often associated with a loss of reflexes in the upper limbs, particularly the biceps and triceps reflexes. This option is incorrect because it is a common feature of the condition.
**Option D:** This option is incorrect because it is not a characteristic feature of cervical spondylotic myelopathy.
**Clinical Pearl / High-Yield Fact**
One key aspect of cervical spondylotic myelopathy is the "keyhole" sign, which is seen on sagittal MRI and refers to the compression of the spinal cord within the cervical canal. This sign is often associated with a poor prognosis.
**Correct Answer: D.**