A bone anchor assembly for holding a suture, the assembly comprising: an anchor having a top, a bottom, and a bore therethrough on the central axis thereof, wherein the bore is wider towards the bottom of the anchor than towards the top of the anchor; and a peg having a top and a bottom, the peg being insertable in the bore of the anchor from the bottom of the anchor, wherein the peg is wider at the bottom than at the top thereof and the bottom of the peg is wider than the top of the bore wherein the bore includes: a first portion towards the top of the anchor, the first portion being cylindrical with substantially constant diameter along the length of the first portion; and a second portion towards the bottom of the anchor, the second portion being wider towards the bottom of the anchor than towards the top of the anchor, wherein the peg includes: a first portion towards the top of the peg, the first portion being cylindrical with substantially constant diameter along the length of the first portion; and a second portion towards the bottom of the peg, the second portion being wider towards the bottom of the peg than towards the top of the peg. wherein the anchor is cylindrical and includes screw threads on the exterior thereof, wherein the peg has indented sides (140, 141, 131) for accommodating a suture. an anchor having a top, a bottom, and a bore therethrough on the central axis thereof, wherein the bore is wider towards the bottom of the anchor than towards the top of the anchor; and a peg having a top and a bottom, the peg being insertable in the bore of the anchor from the bottom of the anchor, wherein the peg is wider at the bottom than at the top thereof and the bottom of the peg is wider than the top of the bore wherein the bore includes: a first portion towards the top of the anchor, the first portion being cylindrical with substantially constant diameter along the length of the first portion; and a second portion towards the bottom of the anchor, the second portion being wider towards the bottom of the anchor than towards the top of the anchor, wherein the peg includes: a first portion towards the top of the peg, the first portion being cylindrical with substantially constant diameter along the length of the first portion; and a second portion towards the bottom of the peg, the second portion being wider towards the bottom of the peg than towards the top of the peg. wherein the anchor is cylindrical and includes screw threads on the exterior thereof, wherein the peg has indented sides (140, 141, 131) for accommodating a suture. a first portion towards the top of the anchor, the first portion being cylindrical with substantially constant diameter along the length of the first portion; and a second portion towards the bottom of the anchor, the second portion being wider towards the bottom of the anchor than towards the top of the anchor, wherein the peg includes: a first portion towards the top of the peg, the first portion being cylindrical with substantially constant diameter along the length of the first portion; and a second portion towards the bottom of the peg, the second portion being wider towards the bottom of the peg than towards the top of the peg. wherein the anchor is cylindrical and includes screw threads on the exterior thereof, wherein the peg has indented sides (140, 141, 131) for accommodating a suture. a first portion towards the top of the peg, the first portion being cylindrical with substantially constant diameter along the length of the first portion; and a second portion towards the bottom of the peg, the second portion being wider towards the bottom of the peg than towards the top of the peg. wherein the anchor is cylindrical and includes screw threads on the exterior thereof, wherein the peg has indented sides (140, 141, 131) for accommodating a suture.