Interference Screw

Core functions and design logic The core function is "anchoring fix", which presses the displaced or torn soft tissue (such as rotator cuff tendons) into the bone tunnel or on the surface of the bone bed, maintaining the stability the position after repair. The design fits the needs of minimally invasive surgery, with a compact size that can be implanted through the port, avoiding the need to expand the surgicalision. Key specifications and materials Specifications: The diameter is commonly 3.5mm, 4.0mm, 4.5mm, 5.mm, the length is 6-15mm, and it needs to match the size of the bone tunnel and the thickness of the soft tissue. Material: The mainstream medical titanium alloy or PEEK (polyetheretherketone), titanium alloy has high strength and good biocompatibility, and PEEK can reduce image interference and is more with postoperative radiology. Applicable scenarios Arthroscopic shoulder surgery: Fix the tendon and humeral insertion point during rotator cuff repair, or labrum, acromioclavicular joint reconstruction, etc. Other joint surgery: Anterior cruciate ligament/posterior cruciate ligament reconstruction of the knee, ligament repair of the ankle joint, etc., for the fixation of soft tissue and bone. Core features Thread design: The surface is mostly self-t thread, which can be directly screwed into the bone tissue without pre-tapping, simplifying surgical operations. End shape: It is mostly round or conical, which reduces cutting damage to the soft tissue and enhances the stability of the fixation. Accessories: Paired with a special implant, it can accurately control the depth and torque of screwation, avoiding excessive tightening damage to bone tissue or excessive looseness leading to fixation failure.