EXHIBIT 12.1 DJ ORTHOPEDICS, INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (DOLLARS IN THOUSANDS) Historical Historical Six Months Ended Years Ended December 31, -------------------- ------------------------------------------------------- 2002 2001 2001 2000 1999 1998 1997 ------- ------- ------- ------- ------- ------- ------- Income (loss) before income taxes $(5,325) $ 2,562 $ 5,201 $ 5,159 $ 9,515 $ 8,345 $10,904 Interest 5,690 8,781 16,673 15,876 7,057 -- 2,072 Amortization of Debt Issuance Costs 390 461 919 877 409 -- -- Amortization of Discount on Sr. Notes 78 102 204 205 102 -- -- 1/3 of rental expense-operating leases 635 556 1,196 1,064 895 1,064 775 ------- ------- ------- ------- ------- ------- ------- Earnings $ 1,468 $12,462 $24,193 $23,181 $17,978 $ 9,409 $13,751 Interest $ 5,690 $ 8,781 $16,673 $15,876 $ 7,057 $ -- $ 2,072 Amortization of Debt Issuance Costs 390 461 919 877 409 -- -- Amortization of Discount on Sr. Notes 78 102 204 205 102 -- -- 1/3 of rental expense-operating leases 635 556 1,196 1,064 895 1,064 775 ------- ------- ------- ------- ------- ------- ------- Fixed Charges $ 6,793 $ 9,900 $18,992 $18,022 $ 8,463 $ 1,064 $ 2,847 Ratio of Earnings to Fixed Charges 0.22 1.26 1.27 1.29 2.12 8.84 4.83 ======= ======= ======= ======= ======= ======= =======