By CAH Medical | Sichuan, China
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Ⅰ.What are PEEK screws?
PEEK (polyetheretherketone) screws are made from a specialty engineering plastic with excellent insulation, corrosion resistance, high-temperature resistance, and flame retardancy. They are widely used in medical devices, electronic equipment, aerospace, and other fields.
Material Properties
PEEK is a semi-crystalline specialty engineering plastic with the best chemical resistance among engineering plastics, being soluble only in concentrated sulfuric acid. Its mechanical properties include heat resistance (continuous operating temperature up to 260°C), wear resistance, flame retardancy (UL94 V-0 flame retardancy), and hydrolysis resistance.
Applications
Medical Devices: Due to their non-magnetic, insulating, and corrosion-resistant properties, they are suitable for surgical instrument components.
Electronic Devices: Used in precision components such as IC wafer carriers and LCD manufacturing jigs.
Aerospace: Commonly used in demanding applications such as wind power equipment and aircraft door seals.
Construction Types
Some models are reinforced with glass fiber (e.g., 30% glass fiber) to enhance mechanical properties. They are commonly used in special-shaped structures such as hermaphroditic screws and knurled thumb screws.
Ⅱ.Do they put screws in your knee for ACL surgery?
Screws are commonly used to secure grafts during anterior cruciate ligament (ACL) reconstruction surgery. During ACL reconstruction, the surgeon uses arthroscopy to make small incisions around the knee joint. After removing the damaged ACL, an autologous or allogeneic graft is implanted into the joint. Screws, anchors, and other devices are used to secure the graft to the bone bed for stability.
The Purpose of Screws
Screws are primarily used to securely anchor grafts (such as the patellar tendon and hamstring tendon) to the femur and tibia, preventing them from slipping or falling out. This type of fixation is a common procedure during arthroscopic surgery and ensures postoperative knee stability.
Postoperative Precautions
Postoperatively, a brace or crutches are required to protect the knee joint, and physical therapy and rehabilitation exercises are performed. Screws generally do not need to be removed; they gradually become part of the bone as the bones fuse.
Ⅲ.Is PEEK screw biodearadable?
Polyetheretherketone (PEEK) screws are non-biodegradable. Due to their material properties, they cannot naturally break down in the human body and require surgical removal.
Reasons for Non-Biodegradability
PEEK (polyetheretherketone) is a high-molecular-weight polymer characterized by high strength and stability. It cannot be degraded in the human body through enzymatic degradation or corrosion. In current medical applications, PEEK screws are primarily used in anterior cruciate ligament reconstruction and joint fusion surgeries, which require long-term fixation of bone or soft tissue. Therefore, the material must exhibit long-term stability.
Post time: Oct-20-2025
