808 N.W.2d 107
S.D.2011Background
- McQuay sustained a compensable neck and back injury on October 22, 2002 while employed by Fischer Furniture/ CarpetMart in Rapid City, SD.
- Benefits were discontinued in March 2004, after which McQuay sought treatment for a low back condition and petitioned the Department of Labor for benefits.
- The Department determined the 2002 injury was not a major contributing cause of McQuay’s low back condition beginning in 2005, and the circuit court affirmed.
- Medical imaging showed a normal lumbar spine in 2002 but later MRIs (2005, 2007) revealed disc protrusions; Drs. Luther and Dowdle attributed the current condition to degenerative changes rather to the 2002 injury.
- Dr. Dietrich opined the 2002 injury was a major contributing cause, but the Department and reviewing court found his view less persuasive, relying on de novo review of deposition testimony and imaging evidence.
- The court held that McQuay failed to prove the 2002 injury was a major contributing cause of his current low back problems, affirming the denial of benefits.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Was the 2002 injury the major contributing cause of McQuay's current low back condition? | McQuay contends the 2002 injury remains the major cause. | Defendants argue degenerative changes and later events caused the current condition. | Not a major contributing cause; affirmed. |
| Do the medical opinions support causation to a medical probability? | Dietrich supports causation from the 2002 injury. | Luther and Dowdle support no causal link to 2002 injury. | Evidence supports no causal link; Department's decision affirmed. |
| Was McQuay's credibility properly weighed in assessing causation? | McQuay claims credibility supports his continuous pain. | Department found inconsistency between testimony and medical records. | Yes; credibility findings upheld and not clearly erroneous. |
Key Cases Cited
- Darling v. W. River Masonry, Inc., 777 N.W.2d 363 (S.D. 2010) (de novo review of medical testimony in causation)
- Vollmer v. Wal-Mart Stores, Inc., 729 N.W.2d 382 (S.D. 2007) (causation in workers' comp as a factual inquiry)
- McNeil v. Superior Siding, Inc., 771 N.W.2d 345 (S.D. 2009) (mixed questions of law and fact; deference on factual ruling)
- Titus v. Sioux Valley Hosp., 658 N.W.2d 388 (S.D. 2003) (burden to prove major contributing cause in workers' compensation)
- Truck Ins. Exch. v. CNA, 624 N.W.2d 705 (S.D. 2001) (probability standard for medical causation evidence)
- Haynes v. McKie Ford, 686 N.W.2d 657 (S.D. 2004) (requirement of reasonable medical probability, not mere possibility)