May 11, 1989 Appeal from the Workers' Compensation Board. Kane, J. Claimant sustained a compensable back injury on October 5, 1979. On August 26, 1981, he reinjured his back in a noncompensable accident requiring surgical intervention. The Workers' Compensation Board found that the accident of August 26, 1981 aggravated claimant's previous compensable injury and constituted a new accident. Accordingly, it apportioned liability equally between the two accidents. Claimant appeals, contending that the