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I.Do bone screws stay in?
Whether bone screws need to be retained for a long time depends on the type of material and individual circumstances:
Titanium screws can be retained permanently
Titanium alloy has excellent compatibility with the human body, will not rust or rejection, and can be retained for life if there is no discomfort after fracture healing. Modern titanium alloy materials also support MRI examinations with field strength of 1.5T and below.
Situations in which the screw needs to be removed:
Discomfort occurs: such as pain, infection or limited function.
Special parts: such as the femur, tibifibular joint and other parts that are susceptible to stress.
Occupational needs: Athletes need to avoid the risk of stress fractures
Metal allergy: Very few people may experience skin itching and other reactions.
Recommendations for special populations
Children: Absorbable screws can be considered to avoid secondary surgery.
Elderly patients: Deep internal fixations (such as pelvic screws) usually do not need to be removed.
II.Do drill holes in bones heal?
Holes in bones formed by trauma or surgery (such as fractures, fixation screw holes, bone defects, etc.) can usually recover gradually, but the degree and speed of recovery depend on the size, location, individual health and treatment methods. Bones have the ability to repair themselves, and small holes (such as screw holes) can be filled with new bone tissue within a few months to a year after surgery; Larger defects may require bone graft or biomaterial-assisted repair.
Basic principles of bone repair
1. Bone regeneration mechanism: Bone is repaired through the dynamic balance of osteoblasts (which produce new bone) and osteoclasts (which absorb old bone).
Small holes (<1cm in diameter): With sufficient blood supply, the new bone tissue will gradually fill and eventually form trabecular bones similar to the surrounding bone structure.
Larger defects (eg, after trauma or tumor resection): If the defect exceeds the bone's ability to repair itself (usually > 2 cm), healing is promoted by bone grafting, cement filling, or bioactive materials such as hydroxyapatite.
2. The importance of blood supply: Bone healing relies on local blood supply, with areas with abundant blood supply (such as the ends of long bones) recovering faster, while areas with poor blood supply (such as the femoral neck) may heal slowly or even without healing.
Post time: Dec-08-2025
