Illinois Appellate Court
Civil Court
Workers' Compensation
IWCC awarded workers compensation benefits to teacher who struck her knee against a metal desk as she arose from her seat to assist a student, causing the surgical incisions on her knee to open and resulting in hemarthrosis. Commission's conclusion that hemarthosis was causally related to accident was not against weight of evidence, as treating physician, though he identified several potential causes (including prior knee surgery), identified work accident as "eliciting cause" of the hemarthrosis. Claimant need only prove that work accident was a causative factor in her condition of ill-being. Commission did not err in dividing claimant's annual salary by 40 to calculate her average-weekly wage. (McCULLOUGH and HOFFMAN, concurring; HOLDRIDGE and STEWART, concurring in part and dissenting in part.)