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Thoracic Radiculopathy Related to Collapsed Thoracic Vertebral Bodies

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Thoracic Radiculopathy Related to Collapsed Thoracic Vertebral Bodies J Neurol Neurosurg Psychiatry: first published as 10.1136/jnnp.47.4.404 on 1 April 1984. Downloaded from Journal of Neurology, Neurosurgery, and Psychiatry 1984;47:404-406 Short report Thoracic radiculopathy related to collapsed thoracic vertebral bodies JAY A LIVESON From the Saul R. Korey Department of Neurology, Albert Einstein College of Medicine, Bronx, New York, USA SUMMARY Three cases are presented of thoracic radiculopathy related to collapsed thoracic vertebral bodies. In all cases proximal weakness of the legs was present, leading to the diagnosis of myopathy in two cases. Sensory symptoms were present in two cases. In one, anterior thigh paresthesias lead to a diagnosis of meralgia paresthetica. This diagnostic entity must be remem- bered if appropriate corroborative tests are to be performed. In cases of trauma this diagnosis should be considered if thoracic vertebral collapse is present. Conversely, an evaluation of proximal weakness should include a review of thoracic radiographs for vertebral collapse, espe- cially in the presence of sensory findings in the lower abdominal or proximal thigh region. Protected by copyright. The literature on the neurological complications of Electromyography revealed fibrillation potentials, positive thoracic vertebral body fracture focuses on spinal sharp waves, bizarre high-frequency discharges, with nor- cord or cauda equina injury.'-4 The only other symp- mal and long-duration polyphasic motor unit potentials in toms mentioned are poorly localised pain, stiffness, bilateral lower abdominal, right upper abdominal, left or back weakness.5 Typical statements are that sim- iliopsoas, and right lower thoracic paraspinal muscles. ple wedge fractures "can be ignored"6 and "are not Extensive sampling elsewhere (including tensor fasciae latae, quadriceps, hip adductors, tibialis anterior, gastroc- commonly associated with neurological injury".' In nemius muscles) did not reveal further abnormalities. only one case were "radicular symptoms" men- There were no brief small abundant polyphasic potentials tioned.8 Three patients are now reported with col- (BSAPPs). Conduction studies (including motor, F waves, lapsed thoracic vertebral bodies who, electromyo- H reflexes, and sural sensory nerve action potentials) were graphically, had denervation restricted to lower normal. These tests indicated bilateral lower thoracic- thoracic-upper lumbar roots. upper lumbar (approximately Ti 1-LI) radiculopathy. Case Two Case reports An 80-year-old man had suffered for a year from insidi- ously progressive leg weakness. He had fallen 4 years Case One before, fracturing his left knee, and 15 months before, suf- http://jnnp.bmj.com/ A 76-year-old Chinese woman slipped two weeks before fering compression of the Li vertebral body. On examina- admission to hospital with subsequent back pain radiating tion, hearing acuity was found to be decreased and upward to the right of the abdomen, and walking difficulty. She gaze limited. Weakness was resticted to iliopsoas muscles suffered from Parkinson's disease. On examination there bilaterally. Sensation and reflexes were normal. Radiogra- was proximal leg weakness. Cranial nerves, sensation, and phy showed a compression fracture of the LI vertebral reflexes were normal. There were pill-rolling tremor, cog- body. Serum SGOT and LDH were normal. wheel rigidity, and Myerson's sign. Radiographs revealed Bizarre high-frequency discharges with normal and compression fractures of T12 and Li, and fractures of ribs long-duration polyphasic motor unit were potentials pres- on October 4, 2021 by guest. and right ischium. On bone scan uptake was increased over ent in bilateral iliopsoas and lower abdominal, left upper T12. CT showed that T12-L1 antero-posterior diameter abdominal, and lower thoracic paraspinal muscles. No was decreased. Serum enzymes (CPK, LDH) were mildly abnormalities were found elsewhere after extensive sampl- elevated. ing, and no BSAPPs were present. Conduction studies were normal. These tests indicated bilateral Ti Address for reprint requests: Jay A Liveson MD, 138 East 37 i-LI Street, New York, New York 10016, USA. radiculopathy. Received 9 August 1983 and in revised form 15 October 1983. Case Three Accepted 28 October 1983 A 72-year-old woman had suffered for several years from 404 J Neurol Neurosurg Psychiatry: first published as 10.1136/jnnp.47.4.404 on 1 April 1984. Downloaded from Thoracic radiculopathy related to collapsed thoracic vertebral bodies 405 right thigh paraesthesias and difficulty arising when seated. nosis of thoracic radiculopathy. Two situations espe- A low back injury had occurred 35 years before, and right cially should draw attention to this mastectomy 15 years before with no additional therapy. possibility. On examination there was hypaesthesia on to the distal Firstly, in those after trauma with a thoracic ver- part of the right anterior thigh. Cranial nerves, sensation, tebral compression, especially in the presence of strength, and reflexes were normal. Radiographs revealed proximal leg weakness or lower abdominal-proximal an old T12 vertebral collapse, and several fractured ribs. thigh sensory complaints. Secondly, when evaluating Bone scan was normal. Thoraco-lumber CT confirmed T12 the aetiology of proximal leg weakness or sensory compression with no thoracic stenosis; degenerative dis- complaints, thoracic radiographs should be reviewed ease was present (Ti 1- 12 and Ti 2-Li), and stenosis below for vertebral body collapse. L3. Fibrillation potentials, positive sharp waves, with normal References motor unit potentials were present in the iliopsoas and lower thoracic paraspinal muscles bilaterally. No other Day B, Kokan P. Compression fractures of the thoracic abnormalities were present elsewhere during extensive and lumbar sampling and no BSAPPs were found. Conduction studies spine from compensable injuries. Clin were normal. These tests indicated bilateral L1,2 Orthop 1977; 124: 173-6. radiculopathy. 2 Schmidek HH, Gomes FB, Seligson D, McSherry JW. Management of acute unstable thoracolumbar (T- 11-L- 1) fractures with and without neurological deficit. Neurosurgery 1980;7:30-5. Discussion Durward QJ, Schweigel JF, Harrison P. Management of fractures of the thoracolumbar and lumbar spine. All three patients had proximal lower extremity Neurosurgery 1981;8:555-61. weakness and collapsed thoracic vertebral bodies Nicholas JJ, Benedek TG, Reece GJ. Delayed traumatic which were dismissed as unrelated and insignificant. vertebral body compression fracture; Part I: clinical A diagnosis of meralgia paraesthetica was made in features. Semin Arthritis Rheum 198 1; 10: 264-70. Protected by copyright. one case and myopathy in the others. Only when Young MH. Long-term consequences of stable fractures was of the thoracic and lumbar vertebral bodies. J Bone electromyographic sampling extended to Joint Surg (Br) 1973;55B: 295-300. T1 1-L2 muscles was any radiculopathy demons- 6 Holdsworth F. Fractures, dislocations, and fracture- trated. dislocations of the spine. J Bone Joint Surg (Am) A myopathy was specifically sought on elec- 1970;52A: 1534-51. tromyography by evaluating motor unit potentials 7Burke DC, Murray DD. The management of thoracic for the presence of BSAPPs. In none of these cases and thoraco-lumbar injuries of the spine with were they present. Severe denervation was isolated neurological involvement. J Bone Joint Surg (Br) to lower thoracic-upper lumbar roots after extensive 1976;58B: 72-8. electromyographic sampling. 8 Harkonen M, Kataja M, Lepisto P, Paakkala T, Patiala Sensory complaints occurred in two cases. The H, Rokkanen P. Fractures of the thoracic spine; clini- cal and radiological results in 98 patients. Arch first patient experienced back pain with right Orthop Trauma Surg 1979;94:179-84. abdominal radiation. The third case was diagnosed Thomas PK. Clinical features and differential diagnosis. as meralgia paraesthetica. On careful consideration, In: Dyck PJ, Thomas PK, Lambert EH, eds. the distribution was not typical of the lateral femoral Peripheral Neuropathy. Philadelphia, WB Saunders, cutaneous nerve involving the anterior rather than 1975:509. the lateral thigh. Motor findings were present in all '0 Goto I, Nagamine M, Katsuki S. Creatine phosphokin- http://jnnp.bmj.com/ cases with proximal distribution suggesting a pnm- ase isoenzymes in muscles. Human fetus and patients. ary diagnosis of myopathy in two cases, but only the Arch Neurol 1969;20:422-9. legs were involved. "Williams ER, Bruford A. Creatine phosphokinase in motor neurone disease. Clin Chim Acta 1970;27:53- In one case, myopathy was suggested by mild CK 6. elevation. It is known, however, that such elevation 12 Calin A. Osteoporosis and Paget's disease. In: Rubens- can occur in neuropathic processes.9-" tein E, Federman DD, eds. Medicine. New York, Sci- Proximal in addition to weakness, suggesting entific American 1980:part 15, chapter XI. on October 4, 2021 by guest. myopathy, should also bring thoracic radiculopathy Coomes EN. Corticosteroid myopathy. Ann Rheum Dis into consideration. There are conditions associated 1965;24:465-72. both with myopathy and with vertebral collapse.'2 '4 Williams RS. Triamcinolone myopathy. Lancet These include steroid therapy,'3 '4 Cushing' s 1959; 1: 698-701. syndrome,'5-'7 hyperthyroidism,'8 hyperparathy- '" Plotz CM, Knowlton Al, Ragan C. The natural history of anticonvulsant Cushings syndrome. Am J Med 1952;13:597-614. roidism,'922 chronic therapy,23 6 Muller R, Kugelberg G. Myopathy in Cushings
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