Type of Article : Original Research
Year: 2015 | Volume 3 | Issue 3 | Page No. 1441-1444
Date of Publication: 30-09-2015
ANATOMICAL STUDY OF LUMBAR SPINAL CANAL DIAMETER ON MRI TO ASSESS SPINAL CANAL STENOSIS
D Geeta Anasuya *1, A Jayashree 2, N.L.N. Moorthy 3, Seema Madan 4.
*1 Assistant Professor, Department of Anatomy, Karpagam Faculty of Medical Sciences and Research, Coimbatore, Tamil Nadu, India.
2 Assistant Professor, Department of Anatomy, Gandhi Medical College, Secunderabad, Telangana, India.
3 Professor & Head, Department of Radiology, Gandhi Medical College & Hospital, Secunderabad, Telangana, India.
4 Professor & HOD, Department of Anatomy, Gandhi Medical College, Secunderabad, Telangana, India.
Address: : Dr Geeta Anasuya MD, Assistant Professor, Department of Anatomy, Karpagam Faculty of Medical Sciences and Research, Coimbatore- 32, Tamil Nadu, India.
Introduction: Lumbar canal stenosis occurs due to narrowing of spinal canal diameter and is usually diagnosed by MRI.
Aims and Objectives of the study: To study and compare the lumbar canal diameters (Antero Posterior) and Cross sectional areas in symptomatic and asymptomatic patients with Lumbar canal stenosis diagnosed using MRI.
Materials and Methods: It is a prospective observational study. A total of 100 patients were subjected to MRI and canal diameters were measured. Among them 60 patients were symptomatic with low back pain and 40 patients were asymptomatic without any back pain. Fifty five patients were males and 45 were females. Majority (31%) were in the age group of 20-30 years.
Results: In symptomatic cases, 41 (68%) cases were stenosed. Stenosis at all the three levels was seen in 5 (12%) cases. At L3-L4, L4- L5 stenosis was seen in 6 (14%) cases, L4-L5, L5-S1 stenosis was seen in 22(53%) cases, L3-L4, L5-S1 stenosis was seen in 8(19%) cases. In asymptomatic cases, stenosis at all the three levels was seen in 5 (13%) cases and at L4-L5; L5-S1 stenosis was seen in 5(12.5%) cases, L3-L4, L5-S1stenosis was seen in 2(5%) cases.
Conclusion: Even in symptomatic Patients, normal diameter of the spinal canal was noticed in 19 (32%) cases. Even in asymptomatic cases canal narrowing was noticed. Most of the symptomatic cases had normal Cross sectional area. Detailed history and clinical examination of the patient along with the radiological investigation of stenosis with MRI scan, will establish the diagnosis.
KEY WORDS: Lumbar canal stenosis, Canal diameter measurements, MRI, Diagnostic methods.
- Kent DL, Haynor DR, Larson EB, Deyo RA. Diagnosis of lumbar spinal stenosis in adults: a metaanalysis of the accuracy of CT, MR, and myelography. AJR Am J Roentgenol. 1992 May;158(5):1135-44.
- Malghem J, Willems X, Vande Berg B, Robert A, Cosnard G, Lecouvet F. Comparison of lumbar spinal canal measurements on MRI and CT. J Radiol. 2009 Apr;90(4):493-7.
- Bischoff RJ, Rodriguez RP, Gupta K, Righi A, Dalton JE, Whitecloud TS. A Comparision of computed tomography-myelography, magnetic resonance imaging, and myelography in the diagnosis of herniated nucleus pulposus and spinal stenosis. J Spinal Disord. 1993 Aug; 6(4): 289-95. PMID: 8219542.
- Eisenstein S. Measurements of the lumbar spinal canal in two racial groups. Clin Orthop Relat Res. 1976 Mar-Apr;(115):42-6.
- F Postacchini, G Pezzeri, A Montanaro; and G Natali. Computerised tomography in lumbar stenosis. A preliminary report. J Bone Joint Surg Br February 1980;62-B:178-82.
D Geeta Anasuya, A Jayashree, N.L.N. Moorthy, Seema Madan. ANATOMICAL STUDY OF LUMBAR SPINAL CANAL DIAMETER ON MRI TO ASSESS SPINAL CANAL STENOSIS. Int J Anat Res 2015;3(3):1441-1444. DOI: 10.16965/ijar.2015.261