2022, Vol. 26 ›› Issue (3): 456-460

RESULTS AND CONCLUSION: After internal fixation of femoral neck fractures in young adults, whether the internal fixation is removed or not can lead to the occurrence of femoral head necrosis. When the internal fixation is taken out, it is easy to cause micro fractures or even fractures again. When the internal fixation is not removed, with the long-term retention of the internal fixation, a large amount of sclerotic bone is formed around the internal fixation, which may be one of the important mechanical mechanisms of femoral head necrosis and rapid collapse after femoral neck fracture in young adults. Through literature analysis of different fracture models and different types of internal fixation, it can be seen that although the inverted triangle structure is the best treatment method, it is still inevitable that the stress concentration will lead to the formation of sclerotic bone, and ultimately lead to the necrosis and collapse of the femoral head. Therefore, we propose to take the nails at the right time before the formation of hardened bone around the internal fixation, and insert a new type of high-strength, degradable, microporous structure, and promote osteogenesis and vascularization, to avoid stress concentration. Internal fixation is used to inhibit the formation of sclerotic bone, which can stop the occurrence of femoral head necrosis.

Key words:femoral neck fracture, femoral head necrosis, young adults\ internal fixation, pathogenesis, review