Hafiz Muhammad Asim, Muhammad Shahid Ismail.
Prevalence of Persistent Low Back Pain in patients Undergoing Spinal Anesthesia in Orthopedic Surgery.
Pak J Med Health Sci Jan ;7(1):254-7.

Aim: To find out the prevalence of persistent low back pain in patients undergoing spinal anesthesia in orthopedic surgeries in Ghurki Trust Teaching Hospital, Lahore. Subject & methodology: Seventy five patients are enrolled in this study with the help of convenience sampling techniques 36 of them were male and remaining 39 were female. A cross sectional survey was done. Participants of the study are of both gender and any age having established diagnosis of persistent low back pain. Duration of the study was 6 months. Our questionnaire which is used is designed specifically to find out the prevalence of persistent back pain in patients undergoing spinal anesthesia. Surprisingly no firm data regarding persistent low back pain exist. Results: 75 questionnaires were filled by patients undergoing spinal anesthesia. Out of which 36 of them were male and remaining 39 were female. Most of people do not have previous history of back pain (84% as compared to 16 percent of back pain). Data reveal that patients having previous history of back pain have back pain after the surgery undergoing spinal anesthesia. Also patients having previous history of surgical procedure undergoing spinal anesthesia in past (spinal anesthesia 14.7% and past surgery 12%) have back pain after the surgery (require further research).patients having no history of spinal anesthesia (85.3%) and previous surgery (88%) have no back pain after the surgery. Patients having back pain after the surgery, have moderate pain(8%), mild pain (10.7%), discomfort (8%).out of 75 patients 55 patients have no back pain (73.3%). Conclusions: Persistent back pain after spinal anesthesia is almost exclusively associated with pre-existing back pain and previous history of spinal anesthesia. New onset of persistent back pain is a rarely event.

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