الفهرس 
Anatomy of Lumbar VertebraOnly 14 pages are availabe for public view
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Abstract
The aim of this study was to determine if baseline MRI findings including disc herniation size is associated with differential surgical treatment effect.
This study was conducted on Benha university hospitals on 36 patients who underwent lumbar discectomy to estimate the role of MRI as a predictor of surgical outcome (by comparison between Preoperative and postoperative leg and back pain scores, as well as functional status measured using the modified oswestry disability index (MODI) )
The age of patients was (21-51) years, mean 36 and 22 patients (61.1 %) were males and 14 patients (38.9 %) were female, all patients suffered from Back and leg pain, 69.44% of them with lower extremity pain , Sciatica with 77.78% of them hypoesthesia and/or leg weakness was reported in 36.11% of cases
According to Level of Herniation in the present study 55.56% of patient were at level L5/S1 and 44.44% al level L4/L5 With regard to Laterality: (52.78%) had left herniation, 38.89 % right herniation, 8.33% were central disc herniation.
According to Herniation type in the present study, it was Protrusion in 44.44% of cases, Extrusion in 25% of cases and Sequestration in 30.56% of cases. Disc height was 8.75 ±1.75 mm , Disc size (AP length) was 8 ±2 cm and Disc volume extracted was 0.95 ±0.5 cc.
In the present study, we devided our subjects into two group according to MODI score difference, group A who had improvement equal or higher than 40 in MODI score and their number was 20 while group A who had improvement less than 40 in MODI score and their number was 16
There was a statistically significant difference in the present study between both groups according to MODI score difference, Disc size, Disc hight and Disc volume extracted
There was a strong positive correlation in the present study between MODI Score Difference and Disc size (r=0.643, p <0.0001) and also Disc volume extracted (r=0.7473, p <0.0001) . There was a strong negative correlation between MODI Score Difference and Disc hight (r=0.507, p =0.001)
It can be concluded that MRI finding espicially disc size and disc height can predict the surgcail outcome. Patients with larger disc herniations, on average, may have a higher likelihood of experiencing superior clinical outcomes following discectomy. Additional findings seem to support that a patient’s preoperative functional score has the strongest influence on postoperative clinical outcome.