356 P.3d 150
Or. Ct. App.2015Background
- Claimant worked for Willamette Valley Rehabilitation Center from 1994–2010; primary duties included saw work and intermittently a repetitive "sticks" job that required rotating bundles with the right hand.
- In April 2010, while assigned to the sticks job (April 5–7), claimant developed acute right wrist pain and reported the injury; employer denied the right wrist claim on May 26, 2010.
- MRI in Sept. 2010 suggested triangular fibrocartilage (TFC) abnormality; arthroscopic surgery in Nov. 2010 revealed a central TFC tear that was repaired, with significant symptom improvement.
- Employer’s expert (Dr. Button) found preexisting positive ulnar variance causing gradual ulnar impaction and cartilage wear; claimant’s surgeon (Dr. Dodds) acknowledged the variance and said it could predispose to thinning from both repetitive work and lifetime use, and that April 2010 work activities were a major contributing cause of the need for surgery but could not precisely date the tear.
- ALJ concluded the symptomatic TFC tear developed during the discrete April 5–7 period and set aside employer’s denial; the Workers’ Compensation Board adopted the ALJ’s facts but characterized the TFC tear as an occupational disease (gradual onset) and reinstated employer’s denial for failure to prove the "major contributing cause" standard for occupational disease.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether the TFC tear should be analyzed as an injury (discrete event) or an occupational disease (gradual) | Onset of symptoms was sudden during April 5–7 sticks job; symptoms should weigh heavily and support classifying the condition as a discrete injury | Medical evidence shows gradual degeneration from ulnar variance and repetitive/lifetime use; condition not traceable to a single event, so occupational disease analysis applies | Board did not err: substantial evidence supports gradual-onset finding; claim properly analyzed as occupational disease |
| Whether the board failed to give adequate weight to sudden symptom onset | Dodds’s uncertainty about timing makes symptom onset highly relevant to infer a discrete tear during April 5–7 | Board permissibly considered symptom onset but credited medical opinions explaining gradual degeneration despite acute symptoms | Relevance of symptom onset varies by condition; here board reasonably discounted sudden symptoms given medical evidence of gradual wear |
| Whether the board’s finding of gradual onset is supported by substantial evidence/reason | Board contends ALJ’s focus on symptomatic condition was correct; claimant argues board’s contrary finding lacks substantial support | Board relied on Dodds’s and Button’s opinions about predisposition and gradual thinning; explained link between facts and legal conclusion | Finding of gradual onset is supported by substantial evidence and substantial reason; no reversible error |
| Burden for occupational disease causation | Claimant argues work was the major contributing cause because surgery was needed after April work | Employer argues statute requires proof that work was the major contributing cause, which claimant failed to prove | Board correctly applied occupational-disease standard (ORS 656.802(2)(a)) and found claimant did not meet the major-contributing-cause burden |
Key Cases Cited
- Smirnoff v. SAIF, 188 Or. App. 438 (2003) (distinguishes condition from symptoms; symptom onset is one factor in determining whether condition developed gradually or during a discrete period)
- Cummings v. SAIF, 197 Or. App. 312 (2005) (standard of review for board factual findings and legal conclusions)
- Boeing Aircraft Co. v. Roy, 112 Or. App. 10 (1992) (claim of pain may be compensable before a definitive medical diagnosis, but once diagnosed claimant must prove compensability of the diagnosed condition)
Affirmed.