Methods for tendon and ligament repair using a scaffolding matrix material. The scaffolding matrix material is an off-the-shelf organic dermis from an unknown source which has been extra-operatively prepared so as to be devoid of viable cells which normally express antigens, and to promote natural healing of soft tissue via revascularization and repopulation. The scaffolding matrix material is used to join ruptured tendons or ligaments together and to join ligaments to bone.