The employee credibly testified that she worked at Laclede Gas Company for nine years in a customer service position that required excessive typing. She worked full time, and had no other hand intensive jobs or activities outside of her employ at Laclede Gas Company. Her symptoms began in 2005 while in the customer service position. The employer set forth no evidence disputing how much the employee typed in the customer service position. I find that the
Employee had a highly repetitive and hand intensive occupation involving her upper extremities, and did not participate in any such activities outside of work.
The focus of the employer's defense pertained to the employee's job duties in a different position, "order control." The employee began the order control position in March, 2006, which was approximately one year after her symptoms began. The employee testified that she typed far more in the customer service position than in the order control position. As such, I find that the video of the employee (Employer Exhibit 6), Janet Leich's testimony regarding keystroke counts and Keith Iborg's testimony regarding job duties all pertain to the order control position and are not accurate accounts of the employee's job duties in the position that she held when her symptoms began.
Dr. Poetz testified that the prevailing factor in the employee's diagnosis and disability was her hand intensive job at Laclede Gas Company.
Dr. Crandall testified that the employee's job was not the prevailing factor in causing the employee's hand symptoms. Dr. Crandall did not diagnose the employee's symptoms as any particular disease or condition due to the lack of objective testing. Without a diagnosis, Dr. Crandall opined that if the employee did have carpal tunnel syndrome, it could not be from her job at Laclede Gas Company. The employer did not send the employee for objective testing.
Dr. Crandall admitted that typing can cause carpal tunnel syndrome, but felt that the employee did not type enough keystrokes to reach the causation threshold. Dr. Crandall's opinion was based on an ergonomic job analysis report provided to him by Laclede Gas Company which purported to describe the job duties of the customer service position. He testified that he did not specifically ask the employee how often she typed or how often she was able to rest her wrists on the job. He believed that no one in a customer service position could ever get carpal tunnel syndrome from their job duties. This is ridiculous. Moreover, Dr. Crandall provided neither a diagnosis of employee's hand symptoms nor an alternative causation theory for her symptoms. Dr. Crandall's opinion has little weight as it is not based on Claimant's actual duties when the disease arose, but rather on her later position.
The employee's credible testimony that she typed almost constantly each day, full time, contradicts the keystroke numbers relied on by Dr. Crandall. Dr. Crandall's keystroke theory is not proven to be generally accepted in the medical community and never has been. His testimony regarding carpal tunnel syndrome has been held not credible in numerous worker's compensation cases and his theories rejected as not supported by medical science. And so it is here.
Dr. Poetz rejected keystroke guidelines as a means of determining causation, emphasizing the implausibility of obtaining an accurate and representative counts and the importance of evaluating patients as individuals. This is the method generally accepted in the medical community for determining the cause of Carpal Tunnel syndrome. In so doing, Dr. Poetz found that the employee had a hand intensive job requiring excessive and repetitive tasks, and that she engaged in no hand intensive activities outside of work.
After reviewing all of the medical causation evidence, I find that Dr. Poetz's opinion is more persuasive and more credible than the opinion of Dr. Crandall. I find that the employee sustained a compensable work-related occupational disease and injury that arose out of and in the course of her employment. I find that the employee's injury was caused by repetitive motion. I find that the employee's occupational exposure at Laclede Gas Company was the prevailing factor in causing the resulting medical condition, bilateral carpal tunnel syndrome, and her permanent partial disability.
Date: $\qquad
Made by: \qquad$
Matthew D. Vacca
Administrative Law Judge
Division of Workers' Compensation
A true copy: Attest:
Division of Worker's Compensation