Progressive Hand Numbness and Gait Instability in an Older Adult
A 67-year-old right-handed retired teacher presents with 3 months of progressive numbness in both hands, worse at night, and increasing clumsiness; she has dropped her coffee cup twice in the past month. She also reports unsteady gait, especially in the dark, and a stiff neck. Her symptoms have plateaued over the past 4 weeks. She denies trauma, fever, weight loss, and bowel or bladder changes. Cervical rotation and extension are reduced by about 50%. Deep tendon reflexes are 3+ at the biceps and triceps bilaterally, Hoffmann sign is positive on the right, and the left plantar response is extensor. Grip strength is 4/5 bilaterally. She asks whether spinal manipulation can 'put the neck back in place.' She has no prior cervical imaging and takes only levothyroxine.
1. What is the most likely diagnosis, and which findings make it more likely than cervical radiculopathy or peripheral neuropathy?
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The leading diagnosis is cervical spondylotic myelopathy. The combination of bilateral hand numbness, progressive clumsiness, gait ataxia, and neck stiffness points to a spinal cord process rather than a single nerve root. Radiculopathy usually follows a dermatomal pattern, may be unilateral, and does not cause an extensor plantar response; peripheral neuropathy is typically length-dependent and does not produce a positive Hoffmann sign or unilateral Babinski. Hyperreflexia, Hoffmann sign, and extensor plantar response are upper motor neuron signs. The normal bowel and bladder history does not exclude myelopathy. Important alternatives include vitamin B12 deficiency, ALS, intramedullary tumor, and multiple sclerosis, but the mechanical neck findings and gradual course favor cervical spondylotic myelopathy. I would not manipulate before imaging because cord compression changes the risk-benefit calculation.
2. What imaging and referral are appropriate before any manual therapy?
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MRI of the cervical spine without contrast is the study of choice because it shows cord compression, signal change, disk-osteophyte complexes, and ligamentous hypertrophy. Plain films may show degeneration but cannot exclude cord compression. Referral should be urgent to a spine surgeon or neurologist, with the exact examination findings and duration documented. The presence of myelopathic signs makes cervical manipulation contraindicated in most circumstances; the risk of catastrophic cord injury is low but unacceptable when a safer diagnostic path exists. I would defer any high-velocity cervical technique, explain why, and offer gentle activity guidance and pain management within scope while awaiting imaging.
3. How would you counsel and document this encounter?
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I would tell the patient that her symptoms suggest spinal cord involvement and that manipulation is not appropriate until imaging and specialist review. I would explain the purpose of MRI, the timeline, and the need to report sudden worsening, new weakness, or bladder changes. Documentation should include the progressive history, the specific upper motor neuron findings, the absent red-flag bowel and bladder symptoms, the decision to defer manipulation, the referral, and the patient's questions and understanding. I would avoid a definitive diagnosis before imaging but record the working diagnosis and differential. This supports continuity and shows that the technique decision was based on findings, not patient preference.