A method of repairing a meniscal tear of a subject includes providing a sheet of collagen membrane material having on one side thereof a smooth barrier face which inhibits cell adhesion thereon and inhibits passage of cells therethrough. The sheet has a fibrous face opposite the smooth barrier face, the fibrous face allowing cell growth thereon. The collagen is predominantly collagen I. The sheet of collagen membrane material is fixed over a meniscal tear so that the fibrous face is oriented toward the meniscal tear.
