Lower back pain is usually caused by either a lumbar sprain, which means that the tissues that connect bone together have been stretched too far or torn, or a muscle strain, which means that damage has occurred to the muscle fibers. The pain from these injuries can be very severe. Generally, the treatment and recovery time for these two types of injuries are the same.
Symptoms may include localized, non-radiating pain, increased pain while standing or walking and relief of pain while sitting or lying down, pain that is sudden, and pain and sensitivity upon being touched. Extreme pain may come on suddenly and leave quickly leaving a dull ache that lasts for days, weeks or months.
Lower back injuries come about in many cases due to heavy lifting at a workplace, falling or twisting of the torso. Sometime these things can happen simultaneously such as when someone twists while lifting a heavy object or a twisting motion occurs during a fall.
Initial treatment of pulled lower back muscles may include medications such as pain relievers and anti-inflammatory medication to reduce pain and inflammation, massage and chiropractic therapy to help increase blood flow to the area and to relax tightened muscles, ice packs to reduce inflammation shortly after an injury, and heat therapy to encourage blood flow to the area. Long-term treatment and preventative measures may include exercises to strengthen the lower back and stretches for the lumbar.
If a lower back injury occurs on the job site, then the employee may be eligible for workers' compensation benefits. An attorney who has experience with workers' compensation matters can help a client in the preparation and filing of a claim.
Source: Spine-health, "Pulled Back Muscle and Lower Back Strain", November 06, 2014