during the evening of June 3, 2003, and experienced pain so severe she had to go immediately to the emergency room; (3) was, at some point in June 2003, dragged to her knees when a dog jerked to the side while she was holding its collar, which made her low back pain worse; (4) was, at some point in October 2003, knocked down by her stepmother's dog, which exacerbated employee's low back pain to the extent she went to the emergency room; and (5) fell down some stairs at work on February 17, 2004, which changed her symptoms of low back pain from left sided to more right sided pain, and also caused employee to experience an electric shock sensation that goes up her leg and spine when she puts weight on her foot.
Given this history of so many different traumatic events that caused employee to experience low back pain, and in some cases changed her symptoms or made them worse, it would seem the key issue in this case is whether the medical experts who testified on employee's behalf were able to provide a convincing explanation why employee's work should be seen as a substantial factor in causing the medical condition or disability of the low back of which she now complains. Notably, however, both parties failed to brief the issue of medical causation.
Turning to the expert medical evidence of record, we discover that the treating physician Dr. Smith recorded employee's belief that lifting heavy boxes caused her pain, and when employee's counsel asked him for a causation opinion, he opined that employee's back pain "seemed to first occur after a lifting injury at work." In his letter, Dr. Smith did not specifically identify the June 2003 accident, nor did he distinguish (or even mention) the other potentially causative incidents between May 2003 and February 2004. In light of these failings, and because Dr. Smith's "seemed to" opinion does not strike us as very confident or persuasive, we find Dr. Smith's causation opinion lacking credibility.
Next, we turn to the evaluating physician Dr. Feinberg's testimony. Dr. Feinberg believes that employee's pain and need for a surgical consultation are "causally related" to the June 2003 accident, but the doctor also lumped into his causation opinion the February 2004 incident in which employee fell down some stairs, which he opined "reinjured and aggravated" employee's low back. Dr. Feinberg listed some diagnostic studies which he believed demonstrated the effects of the 2004 incident, but did not specifically identify what medical conditions or disabilities were caused by the June 2003 accident as opposed to the February 2004 incident, nor did he explain why work, as among the numerous other traumatic events employee suffered, should be deemed a substantial factor in causing such conditions. Owing to these deficiencies, we find Dr. Feinberg's causation opinion lacking credibility.
Finally, we observe that Dr. Raskas evaluated employee on November 7, 2008, recorded employee's history of lifting things in 2003 and falling down stairs in 2004, and offered the opinion that employee is totally disabled and needs surgery. But Dr. Raskas did not provide a causation opinion of any kind.
Meanwhile, employer advances testimony from Drs. Rende, Cantrell, and Chabot, each of whom agree that work was not a substantial factor in causing employee's low back