Symptoms of Thoracic Myelopathy
Patients with thoracic myelopathy most commonly present with thoracic midback pain (76%), motor/sensory deficits (61%), spasticity/hyperreflexia (58%), positive Babinski sign (55%), and bladder dysfunction (24%). 1
Core Clinical Presentation
The classic symptom constellation includes:
- Gait disturbance - Often the most prominent functional complaint, particularly associated with ossification of the posterior longitudinal ligament (OPLL) and ossification of the ligamentum flavum (OLF) 2
- Girdle pain - Band-like sensation around the trunk
- Leg weakness and paresis - Progressive lower extremity motor dysfunction
- Sensory disturbances - Including leg numbness and posterior column dysfunction (position/vibration sense) 3
- Bladder or bowel dysfunction - Present in approximately one-quarter of symptomatic cases
- Back pain - Often accompanies the neurologic symptoms 4
Anatomically-Specific Symptoms
The compressed spinal level influences symptom patterns 5:
- T10/11 anterior compression → Lower limb muscle weakness
- T11/12 anterior compression → Lower limb pain and low back pain
- T12/L1 anterior compression → Hyporeflexia in patellar tendon reflex and foot drop
Physical Examination Findings
Key neurologic signs include 1, 2:
- Spasticity and hyperreflexia (58% of cases)
- Positive Babinski sign (55% of cases)
- Increased patellar and ankle tendon reflexes
- Ankle clonus
- Residual spasticity often persists even after surgical decompression 3
Important Clinical Patterns
Acute vs. Progressive Presentation: While most thoracic myelopathy develops gradually, approximately 4% of thoracic disc herniations present with acute myelopathy (developing in <24 hours) 6. These acute cases frequently have sudden dorsalgia (back pain) as the initial symptom before profound neurological deficits develop.
Age and Trauma Association: Symptomatic thoracic disc herniations occur most commonly in patients aged 30-50 years, with more than one-third having a history of trauma 1. However, in acute presentations, a precipitating traumatic event is rarely identified 6.
Common Pitfalls
The clinical presentation can be misleading, and diagnosis may be delayed while excluding other causes, particularly vascular etiologies 6. Dorsalgia (back pain) frequently precedes profound myelopathy and should prompt early investigation - this warning symptom can facilitate earlier diagnosis before irreversible cord damage occurs.
The persistence of residual spasticity at follow-up, even after successful decompression, reflects irreversible cord changes from prolonged compression 3. This underscores the importance of recognizing symptoms early and pursuing timely imaging and intervention when progressive neurological deterioration is present.