The main issue in this case is whether the claimant sustained an injury to his back as an occupational disease due to repetitive trauma as the result of heavy lifting at work. Also at an issue is how the new law addressing occupational disease, which went into effect on August 28, 2005, applies to this injury.
The employer does business as Cummings Tools. They are in the business of selling tools by traveling around the United States and setting up daily sales events at different locations. They load the tools into semi-trucks and travel to various locations such as trade shows. They set up displays for one to two days and sell tools. When they arrive at a location, the tools are manually unloaded from the trucks and set up for display. Inventory is carried on the trucks and items are delivered as they are sold. After the sale, the trucks are manually reloaded.
The claimant worked for employer as part of one of these traveling groups. As a truck driver, he would drive the truck from location to location as well as be responsible for loading and reloading the items. This took approximately 2-4 hours a day. The tools and boxes weighed between 40 to 300 pounds. The claimant typically worked 17 days on the road and 17 off. Of the time he worked he would work 12 - 15 hours consecutively.
The claimant went to work for the employer on February 1, 2004. Prior to this there is no evidence that claimant had any back problems, nor had he sought medical treatment for his back. Shortly before going to work for the employer, the claimant went to Burton Creek Medical Clinic on January 24, 2004, complaining of vomiting for 14 hours. He did not report back pain.
During the first three weeks he worked he noticed back pain. There was no identifiable event associated with this; rather he felt it was due to the general heavy nature of his job. The claimant did not report an injury to the employer. Upon returning home, he sought medical treatment on his own and went to the Burton Creek Medical Clinic on February 17, 2004, complaining of back pain. The history given in the medical records as "the onset of pain has been sudden and has been occurring in a persistent pattern for two weeks. The course has been increasing and occurs more in the early morning. The pain I characterized as a dull ache. The pain is described as being located in the lower back. The symptoms are aggravated by lying down." The records also state that the claimant had "no knowledge of injury to back but has been doing a lot of heavy lifting with his new job as a truck driver." Claimant was prescribed medications.
On February 24, 2004, claimant went to Ozark Medical Center emergency room with complaints of back pain "onset 3 weeks worse today." The claimant specifically denied any injury. He was again prescribed medication and told to avoid strenuous injury. The next day the claimant returned to the Burton Creek Medical Clinic complaining of back pain that was precipitated by nothing. He had stiffness but no radiculopathy. He was given Darvocet and instructed to follow-up.
On April 19, 2004, he returned with complaints of persistent low back pain, increasing for 3 months. He had a positive straight leg test. An MRI of the lumbar spine was performed in May 2004 which showed degenerative disc disease form L3 to S1 with a large disc herniation at L3-4 on the right with an annular tear and mass effect on the nerve root and a smaller left sided disc herniation at L4-5, which might be affecting the nerve root. The claimant was referred to Dr. Green for evaluation.
The claimant did not see Dr. Green until 2006. Claimant testified that this was because he did not have insurance or means to pay for treatment. The claimant did not report this injury to the employer.
He continued to work, and testified that he had general discussions with his superior, including his immediate supervisor, Allen Hatch, regarding his back complaints. He testified that he did not know what was causing his back complaints and had not been told that they were work-related.
Allen Hatch testified that the claimant worked under his supervision for approximately one year. He said that when claimant worked under him he had no problems with doing his job and made no complaints about his back. Claimant was still able to do all the lifting when he last worked with Mr. Hatch. Claimant continued to work there under other supervisors. Mr. Hatch said that after he was no longer claimant's supervisor, claimant did complain of his back hurting but he could not remember when. He said that after claimant became a manger he still worked hard. Claimant testified that he told a subsequent supervisor, Mr. Halligan, of his back pain and that he was on medications for it.
Claimant continued to lift at work. He testified that he had persistent back pain. In the fall of 2005 claimant was promoted to manager. At this time his lifting and unloading increased as he felt he needed to compensate for some other employees.
The claimant testified that he last worked on April 14, 2006. He had a phone conversation with Gina Pratt, who was in the Human Resources department, on April 14, 2006, where he requested medical leave for surgery to his back. He testified that he told her it was from work. In his deposition he testified that he never told her it was work-related. He said they discussed insurance paying for the surgery. He also said she told him they would continue to pay him base pay. Claimant did not return to work for the employer. He was terminated approximately $1-11 / 2$ weeks later for shortages.
Following the MRI of May 2004, claimant did not receive any medical treatment for his back until he returned to Burton Creek Medical Clinic on April 19, 2006, with low back pain. At that time he also complained of radiculopathy. The records state, "present - back pain (has been working for Cummins tools lifting a lot of machinery and doing fine) and radiculopathy (down left leg at times (not hurting today) just wants referral.) Pt wants to know if he can go see Dr. Green again - he went about a year ago and didn't have insurance and they told him to come back when he did have it." He had a negative straight leg test.
Claimant went to Dr. Green on May 4, 2006. This appears to be his initial visit. He reported back pain, "chronic, intermittent problem with an acute exacerbation. The event that precipitated this pain was job-related repetitive lifting of stock. He states the current episode started 2 years ago with progressive worsening of symptoms." An MRI dated May 30, 2006, showed a mild disc bulge at L2-3; a right posterior disc protrusion at L4-5, similar to the 5/19/04 MRI; left paracentral annular tear unassociated with disc protrusion at L4-5, which was new; and grade I spondylolisthesis at L5-S1most likely due to L5 spondylolysis and associated with posterior disc bulge or pseudo bulge.
Claimant filed a claim on June 15, 2006, in which he requested medical treatment. In his original claim he states a date of injury of January 31, 2004, claiming injury to the back, spine, both shoulders, both feet and both legs by exposure to repetitive lifting, bending, and squatting. The employer filed a report of injury, and a timely answer was filed. An amended claim was filed on November 9, 2006, alleging a date of injury of April 14, 2006. It named the parts of the body injured as back, spine, both shoulders, both feet, and both legs, in that the employee was exposed to repetitive lifting, bending and squatting. Claimant again requested additional medical treatment. A timely answer was again filed.
Dr. David Paff examined the claimant on September 25, 2006. The claimant told Dr. Paff that "he never reported it to his employer and was not sent to a physician by the employer." The first physician to find the claimant's condition work-related was Dr. Paff. In his report he stated that the work exposure at employer through April 2006 was the prevailing factor causing the problem. He recommended additional treatment including physical therapy, injections and possible surgery. He put the claimant on a 20 pound lifting restriction and said he had not reached maximum medical improvement.
EMG studies were conducted on the lower extremities in September 2006, showing normal findings but possible involvement of the S1 level. On October 2, 2006, claimant went to the emergency room at Ozark Medical Center complaining of back pain. A CT myelogram of the cervical and lumbar spine performed in December 2006 showed unremarkable findings for cervical but a small anterior extradural
defect at the L4-5 level with a disc protrusion at L5-S1 and a protrusion at L3-4.
Dr. Paff issued several subsequent additions to his report correcting a typographical error and explaining that review of subsequent records did not change his opinion. In his deposition he said that the work exposure he attributed to the injury is the heavy lifting claimant did. He felt that the repetitive trauma exposure was during the early part of his job in 2004.
On January 31, 2007, Dr. Jeffery Woodward evaluated the claimant. He found that the claimant's duties were not the prevailing factor in causing the employee's condition. He stated, "The medical records document lumbar pain onset anywhere from late January to mid-February 2004 which is not sufficient time at work to constitute repetitive strain causation. The initial lumbar pain could have resulted from the 14 hour persistent vomiting illness noted in medical records. Based on review of all information available today, in my opinion within a reasonable degree of medical certainty, a work related injury was NOT the prevailing cause of the patient's lumbar condition."
In February 2007 the claimant underwent 3 weeks of physical therapy which did not improve his condition. On April 3, 2007, a right sided L3-4, left sided L4-5, and bilateral L5-S1 hemilaminotomy/discectomy was performed. He was taken off work for six weeks then placed on light duty restrictions.
Claimant testified that before the surgery he could not sit for long trips, he could not pick up his 4 year old daughter, or yard work. He had problems bending, standing, sitting for long periods and could not drive long distances.
Claimant testified that the surgery stopped his pain and weakness in his legs. He still has back pain. He could not stand for long before the surgery but can stand for a few hours now. At present, he has problems with heavy lifting, bending, stooping, and squatting.
Since leaving the employer, he has worked odd jobs for a tree service. He raked leaves and cleaned up after trees were cut. He has worked approximately 50 hours total. He has not sought any other employment. He does not think he could do the work required by his old job for employer; he does think he could do fast food. He was released from treatment two weeks before the hearing and said he is ready to start looking for work. He has not found work yet.
The claimant testified that he was hired at the rate of $\ 100 per day with a commission of 5.25 % of profit over $\ 15,000, to be split between crew members. He testified that in 2005 he made just under $\ 40,000. He said he made just under $\ 13,000 in 2006.