Abstract: An orthotic device with an integrated compression knee sleeve that is less prone to slippage includes a waistband configured to encircle a wearer's waist; a seat portion and a front portion attached below the waistband to encircle the wearer's seat and crotch; a first leg portion attached below the seat portion and the front portion to partially cover a first leg of the wearer; and a second leg portion attached below the seat portion and the front portion to partially cover a second leg of the wearer. The second leg portion includes the integral compression knee sleeve, which encircles the wearer's knee to exert compressive forces on the knee.