Dr. Hartman does not believe that the trash throwing incident on April 13, 2009, is the prevailing factor in causing employee's right shoulder symptoms or condition. Dr. Hartman, however, acknowledged that employee was asymptomatic before April 13, 2009, and that at least some of employee's rotator cuff tear must be due to an acute injury that employee sustained on that date.
Dr. Swaim agrees employee suffered a rotator cuff tear in the incident of April 13, 2009, but unlike Dr. Hartman, he does not minimize that tear or attribute employee's right shoulder problems to preexisting conditions. Dr. Swaim agreed that employee had some preexisting asymptomatic degeneration in her shoulder, including possibly an asymptomatic preexisting rotator cuff tear, but he opined that the event on April 13, 2009, is the prevailing factor causing employee to sustain a rotator cuff tear and resulting disability.
On cross-examination, employer's counsel asked Dr. Swaim what was the prevailing factor causing "the medical condition or the condition in her rotator cuff that you've described." Transcript, page 66. Employer makes much of Dr. Swaim's response that he could not separate out the accident of April 13, 2009, from the previous cumulative trauma or stress on employee's shoulder and acknowledged there was no way to "absolutely know" whether employee had a preexisting rotator cuff tear. Transcript, page 67. But the problem actually lies in the question posed by employer's counsel, as Dr. Swaim had just finished describing two separate conditions of employee's right shoulder: a preexisting impingement syndrome involving possible small tears of the rotator cuff, and a rotator cuff tear that he identified as resulting from the April 13, 2009, event. In this matter, employee seeks compensation only for injuries arising from the April 13, 2009, event. The question by employer's counsel called for the doctor to provide a single global causation opinion as to two distinct medical conditions which he had already opined were due to separate factors. Dr. Swaim's inability to answer such a question does not, in our view, diminish his credibility. Nor are we persuaded by employer's argument that this and similar testimony from the doctors should work the effect that employee is caught somewhere between proving an accident and occupational disease with an inability to prove either case.
Notably, both doctors agree that employee sustained an acute injury due to the accident of April 13, 2009. Ultimately we consider most credible the testimony from Dr. Swaim that the accident of April 13, 2009, is the prevailing factor in causing employee to suffer a right shoulder rotator cuff tear and resulting disability. We so find.