- Acute low back pain, defined as either class 1a or class 2a according to the Quebec
Task Force Classification and categorized as moderate-severe in the Pain Intensity
Categorical Scale and Visual analogue score (VAS) greater or equal to 50 mm
- Acute low back pain was to have started at least 72 hours prior to inclusion in the
trial and more than 6 weeks after the last episode of acute low back pain
- History of at least 1 reported episode of acute low back pain in the last 5 years
- History of inflammatory arthritis, chronic pain, metastasis, Paget's disease, or other
diseases known to cause pain
- Moderate to severe scoliosis
- Back pain due to major trauma or visceral disorder
- Unwilling to refrain from commencing concomitant physiotherapy
- Active or suspected esophageal, gastric pyloric channel, or duodenal ulceration or
bleeding within 30 days prior to the first dose of study medication
- Any known laboratory abnormality, which in the opinion of the investigator, would
contraindicate study participation
- Subject was pregnant or lactating woman , or was a woman of childbearing potential not
using an acceptable method of contraception