Larry Burnam ("Claimant") was born on September 7, 1951. He has been employed since October 2004 for the University of Missouri ("Employer") as a master refrigeration technician. Claimant performs most of his work for Employer at the old Ellis Fischel building in north Columbia. Claimant has performed commercial refrigeration work for all of his adult life.
In 1997, Claimant sustained a left-sided disc herniation at L5-S1 with migration of the disc material down to the S1 nerve root. Claimant was experiencing a left lower extremity radiculopathy. Claimant underwent discectomy surgery with resolution of the radicular symptoms.
As stipulated, Claimant sustained a work-related accident and injury on June 11, 2008. The injury occurred while Claimant was changing a compressor on an MRI chiller unit. This required him to sit on a concrete ledge and lean backwards through a small open space in order to install the compressor and cut, re-route, and weld its piping. As he changed positions and moved around throughout the day while working on this project, he noted the onset of back pain and some difficulty straightening up. He described pain across his back at or above his belt level that extended down into his right buttocks to an area slightly below his right back pocket. He
mentioned the symptoms to his supervisor before leaving work but did not seek treatment that evening. His back remained stiff and painful, even after he took a hot bath. The following morning he filled out an injury report when he arrived at work. He was sent to Work Injury Services at the University. Claimant was seen by a nurse or a nurse-practitioner on five occasions between June 12, 2008 and July 17, 2008. Claimant was treated conservatively with exercises and prescription medication, and was placed on modified work duty.
On Claimant's first visit to Work Injury Services, he reported a resting pain level of 6/10 which increased to 8-9/10 sharp pain with activity. It was documented that he "denies numbness/tingling in LE". He was ordered off work until June 16 at which time he was to return to work on modified duty. He was treated for a lumbosacral strain. Claimant was instructed to take ibuprofen, an anti-inflammatory, was prescribed Skelaxin, a muscle relaxant, and Ultram, a narcotic pain reliever.
Claimant testified that he asked nurse-practitioner Patricia Kean if he should undergo an MRI as he was worried about having sustained a herniated disc. Claimant testified that she declined. Ms. Kean testified that she did not recall Burnam asking about an MRI and, besides, that the mechanism of injury "was not there to herniate a disc." At the first visit, an x-ray was ordered by the nurse-practitioner. Claimant testified that the pain was greater on the right than left and the pain traveled into his buttocks very early after the injury.
On the June 19, 2008 visit to Work Injury Services, Claimant complained of "dull" and "achy" pain in the lumbosacral area. He was noted to have gait "guarded with sit to stand". He was maintained on modified duty but his restrictions were lessened and he was continued on ibuprofen and Skelaxin.
On the June 26, 2008 visit to Work Injury Services, it was recorded that Claimant indicated that his low back pain was usually a $5 / 10$ by noon. His complaints were focused on the right low back. His movements were noted to be "stiff". Claimant was diagnosed with a lumbosacral strain, maintained on limited duty, and instructed to do home exercises. Claimant was, at that time, still taking a maximum daily dose of ibuprofen.
Claimant was next seen in Work Injury Services on July 9, 2008. He was diagnosed with a lumbar strain right greater than left. It was noted that he reported a pain level of $2 / 10 at rest with pain increasing to 4 / 10$ by the end of the day. The physical exam revealed increased pain with lateral bending to the right. Ms. Kean testified that on the July 9, 2008 visit, Claimant's reported pain was limited to the right instead all of the way across the lumbar area. Claimant was still taking ibuprofen at that time although less than had been noted in the previous visit. Claimant was released to return to "medium-heavy" work.
Claimant was last seen in Work Injury Services on July 17, 2008. He was released from care at that time. It is noted that his "[b]ack pain resolved with no discomfort". However, Claimant testified that though his back improved over the five week period he was followed by Work Injury Services his pain never completely resolved and he never reported that his pain had completely resolved. The pain diagram for that visit was completed by Ms. Kolostov and it was shaded indicating pain in the lumbosacral area which is roughly the same area shaded by Kolostov during the June 26, 2008 visit. However, Ms. Kolostov testified that she shaded the
pain diagram on July 17 not because Claimant reported pain in that area on that day but because he had previously reported pain in that area.
After five visits to University of Missouri Work