Prosthetic ligament system for knee joint

A braided hollow core suture construct, comprising:

• a braided hollow core suture with a first free end and a second free end, the first free end extending into the braided hollow core suture through a first aperture in the braided hollow core suture, longitudinally within the braided hollow core suture between the first aperture and a fourth aperture in the braided hollow core suture, and out of the braided hollow core suture through the fourth aperture to form a first adjustable loop, the second free end extending into the braided hollow core suture through a second aperture in the braided hollow core suture, longitudinally within the braided hollow core suture between the second aperture and a third aperture in the braided hollow core suture, and out of the braided hollow core suture through the third aperture to form a second adjustable loop, wherein the first aperture, the second aperture, the third aperture, and the fourth aperture which are all separate apertures in the braided hollow core suture,
• wherein the braided hollow core suture includes a first fiber and second fiber braided together,
• wherein the first fiber has a first diameter,
• wherein the second fiber has a second diameter that is made larger e first diameter,
• wherein the braided hollow core suture includes a braided suture wall,
• wherein the second diameter being larger than the first diameter causes the second fiber to protrude from the first fiber along the braided suture wall.

A braided hollow core suture construct, comprising:

• a braided hollow core suture with a first free end and a second free end, the first free end extending longitudinally through a first longitudinal passage in the braided hollow core suture to form a first adjustable loop,
• wherein the braided hollow core suture is formed by a process that includes braiding together multiple biocompatible fibers, wherein said braiding together includes braiding into the braided hollow core suture a plurality of first fibers having a first diameter, and wherein said braiding together further includes braiding into the braided hollow core suture along with the plurality of first fibers at least a second fiber having a second diameter that is larger than the first diameter so as to increase the coefficient of friction of the braided hollow core suture relative to the coefficient of friction of the plurality of first fibers,
• wherein the first fiber is formed with a polyethylene material,
• wherein the second fiber is formed with a polyester material.