The Bilok® ST Screw is a cannulated, sterile, single-use bone screw made of an absorbable Poly (L-lactic) acid and calcium phosphate which will gradually be absorbed into the body over a period of 24 months. This function however is patient dependant. The Bilok® ST Screw is for use as a fixation screw in cruciate ligament surgery. It provides a combination of suspension and compression fixation that resorbs and it is subsequently replaced with bone during the healing process. Bilok® ST Screw is biodegradable and biocompatible.
A small, sterile, threaded rod with a slotted head typically used for internal orthopaedic fracture fixation by being screwed into bone to hold plates or nails to bone or to provide direct interfragmentary stabilization of bone, or it may fasten soft tissue to bone; it is made of a material that is chemically degraded and typically absorbed via natural body processes (e.g., degradable polymers). This device may be used in maxillofacial surgery. There are a number of kinds available: cortical, cancellous, malleolar, scaphoid, partially-threaded and fully-threaded. A "lag screw" can be any of these used to obtain compression across bone fragments.