A cutting assembly for a surgical instrument having a drive assembly including a motor , said cutting assembly being configured to be removably coupled to the drive assembly of the surgical instrument , said cutting assembly comprising: a tube assembly comprising a longitudinal axis defined between a distal end opposite a proximal end, a cutting window at said distal end and adapted to be applied to a surgical site of the patient, an inner tube adapted to be rotated by the drive assembly and comprising an inner tube aperture , and an outer tube disposed over said inner tube and comprising an outer tube aperture with said inner tube and outer tube apertures defining said cutting window of said tube assembly ; and a manually movable member coupled to said outer tube and adapted to be rotated by the user to rotate said outer tube aperture about said longitudinal axis ; the cutting assembly further comprises a grip coupled to said tube assembly and configured to be engaged by a portion of a hand (H) of a user with the hand (H) comprising a thumb (TH), a plurality of fingers including an index finger (IF) and a secondary finger (SF), a web (W) disposed between the thumb (TH) and the index finger (IF), and a palm (P), wherein said manually movable member is adapted to be rotated with the index finger (IF) or the thumb (TH) of the hand (H) while said grip is engaged by the web (W) of the hand (H), characterized in that the grip further comprises a nose portion having an aperture extending axially therethrough to allow the outer tube to extend axially therefrom, a finger portion extending from the nose portion adapted to be engaged by the index finger (IF) or the secondary finger (SF) of the hand (H), and a web portion adapted to be engaged by the web (W) of the hand (H). a tube assembly comprising a longitudinal axis defined between a distal end opposite a proximal end, a cutting window at said distal end and adapted to be applied to a surgical site of the patient, an inner tube adapted to be rotated by the drive assembly and comprising an inner tube aperture , and an outer tube disposed over said inner tube and comprising an outer tube aperture with said inner tube and outer tube apertures defining said cutting window of said tube assembly ; and a manually movable member coupled to said outer tube and adapted to be rotated by the user to rotate said outer tube aperture about said longitudinal axis ; the cutting assembly further comprises a grip coupled to said tube assembly and configured to be engaged by a portion of a hand (H) of a user with the hand (H) comprising a thumb (TH), a plurality of fingers including an index finger (IF) and a secondary finger (SF), a web (W) disposed between the thumb (TH) and the index finger (IF), and a palm (P), wherein said manually movable member is adapted to be rotated with the index finger (IF) or the thumb (TH) of the hand (H) while said grip is engaged by the web (W) of the hand (H), characterized in that the grip further comprises a nose portion having an aperture extending axially therethrough to allow the outer tube to extend axially therefrom, a finger portion extending from the nose portion adapted to be engaged by the index finger (IF) or the secondary finger (SF) of the hand (H), and a web portion adapted to be engaged by the web (W) of the hand (H). <EOS>