Section 287.220 RSMo, creates the Second Injury Fund and provides when and what compensation shall be paid in "all cases of permanent disability where there has been previous disability." As a preliminary matter, the employee must show that he suffers from "a preexisting permanent partial disability whether from compensable injury or otherwise, of such seriousness as to constitute a hindrance or obstacle to employment or to obtaining reemployment if the employee becomes unemployed ..." Id. The Missouri courts have articulated the following test for determining whether a preexisting disability constitutes a "hindrance or obstacle to employment":
[T]he proper focus of the inquiry is not on the extent to which the condition has caused difficulty in the past; it is on the potential that the condition may combine with a work-related injury in the future so as to cause a greater degree of disability than would have resulted in the absence of the condition.
Enusley v. Charleswood Corp., 211 S.W.3d 629, 637 (Mo. App. 2007) (citation omitted).
We are convinced that employee's preexisting disabilities were serious enough to constitute hindrances or obstacles to employment for purposes of $\S 287.220$ RSMo. Employee provided evidence of a preexisting low back injury and seizure condition. Each of these conditions had the potential to combine with future work-related injuries so as to cause greater disability than would have resulted in the absence of these conditions. Dr. Rope rated employee's preexisting back disorder at 20\% permanent partial disability of the body as a whole and opined that employee's seizure disorder was a hindrance or obstacle to employment, and we have found Dr. Rope credible. We conclude that at the time he sustained the September 23, 2004, work injury, employee suffered from a low back disability and a seizure condition, both of which constituted hindrances or obstacles to employment or reemployment.
We now proceed to the question whether employee met his burden of establishing entitlement to compensation from the Second Injury Fund. Section 287.220.1 RSMo, provides, in relevant part, as follows:
After the compensation liability of the employer for the last injury, considered alone, has been determined by an administrative law judge or the commission, the degree or percentage of employee's disability that is attributable to all injuries or conditions existing at the time the last injury was sustained shall then be determined by that administrative law judge or by the commission and the degree or percentage of disability which existed prior to the last injury plus the disability resulting from the last injury, if any, considered alone, shall be deducted from the combined disability, and compensation for the balance, if any, shall be paid out of a special fund known as the second injury fund, hereinafter provided for. If the previous disability or disabilities, whether from compensable injury or otherwise, and the last injury together result in total and permanent disability, the minimum standards under this subsection for a body as a whole injury or a major extremity injury shall not apply and the employer at the time of the last injury shall be liable only for the disability resulting from the last injury considered alone and of itself; except that if the compensation for which the employer at the time of the last injury is liable is less than the compensation provided in this chapter for permanent total disability, then in addition to the compensation for which the employer is liable and after the completion of payment of the compensation by the employer, the employee shall be paid the remainder of the compensation that would be due for permanent total disability under section 287.200 out of a special fund known as the "Second Injury Fund" ...
The foregoing section requires us to first determine the compensation liability of the employer for