Dr. Rank, the protagonist of Henrik Ibsen’splay “A Doll’s House” (If I am not mistaken) suffered from the same disease as this lady who got admitted when I was in the Orthopedic posting.
A 32 year old female presented with bilateral weakness of legs (paraparesis) which progressed to bilateral paralysis of the legs (paraplegia). She had a complain of long standing back pain for the past 4-5 months, as also a history of incompletely treated tuberculosis 2.5 years ago. Of late, she started showing similar symptoms as that previous episode. She had stated to have been suffering from weight loss, anorexia, evening rise of temperature, night sweats.On physical examination, the patient seemed anemic, was cachectic, had mild fever. There was a spinal mass at the level of D2-D4, which was tender to pressure. There was patchy loss of sensation from the chest downwards. There was paraparesis and plantar was extensor, other deep reflexes were exaggerated, and superficial reflex (abdomen) absent. The bladder and bowel control was present!
A chest X-ray was ordered and a compression fracture was evidenced at the level of D3 in addition to bilateral apical infiltration suggestive of tuberculosis.
The patient was admitted and this MRI was obtained. Compression collapse of the D3 vertebra is seen here. Destroyed vertebral components along with anterior epidural collection is causing a canal narrowing and outting pressure on the thecal sac. Loss of dorsal curgvature is seen with intervertebral disc adjaent to the D3 vertebrae showing loss of morphology. Rest of the visualized vertebrae are normal in height and morphology, except for the occurrence of Schmorl’s node in D11.
All of this is routine, and what I didn’t know was about Schmorl’s nodes. According to the authors of a recent study (1),
Schmorl’s nodes are areas of “vertical disc herniation” through areas of weakness in the endplate. In younger patients, it seems to be more common because the annulus is strong and intact, and thus nuclear material herniates through the weaker endplate. As the annulus degenerates with time and age, transverse or posterolateral herniations are more common.
The deal with the Schmorl’s node is that it is more common in the younger age groups and may also explain the incidence of low back pain in this population, especially in thise involved with sports or activities that may be responsible for causing this (2).
Pott’s spine is a fairly common complication of Tuberculosis in India. In plainspeak, this is a form of TB in which there is extrapulmonary dissemination. Usually, the lower dorsal and upper lumbar vertebrae are most affected, but this case shows us a rarer site of affliction. Usually, the spread is by hematogenous route and is known as tubercular spondylitis.
This is, however, not to be confused with Pott’s Fracture, which is bimalleolar fracture of the ankle. Sometime later, I will put up the X-ray of the pott’s fracture that I have (yes, I have seen that too during the short course of my internship!). I must say internship has thrown up a lot of cool clinical stuff!
Patient Consent: Obtained
Reference:
1.Hamanashi C, Kawabati T, Yosii T. Schmorl’s nodes on MRI. Their incidence and clinical relevance. Spine 19(4) p.450-453 1994.
2.Takahashi T, Miyazaki T, Ohnari H, Takino T. Schmorl’s nodes and low back pain. Eur Spine J 1995, 4:56-59.


















