Chinese Journal of Tissue Engineering Research ›› 2024, Vol. 28 ›› Issue (8): 1211-1216.doi: 10.12307/2023.858

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Correlation between lower limb alignment and risk factors of patellofemoral pain syndrome in young men

Han Bing, Liu Hongbin, Wang Hehong, Zhao Hanqing, Zhao Riguang, Sun Yiyan, Zhang Yu   

  1. Department of Orthopedics, 71 Group Army Hospital, Xuzhou 221004, Jiangsu Province, China
  • Received:2022-10-18 Accepted:2022-12-09 Online:2024-03-18 Published:2023-07-18
  • Contact: Liu Hongbin, Chief physician, Master’s supervisor, Department of Orthopedics, 71 Group Army Hospital, Xuzhou 221004, Jiangsu Province, China
  • About author:Han Bing, Master, Associate chief physician, Department of Orthopedics, 71 Group Army Hospital, Xuzhou 221004, Jiangsu Province, China

Abstract: BACKGROUND: The risk factors for patellofemoral pain syndrome are still unclear and research on risk factors is gradually becoming a hot topic in order to improve the therapeutic outcome of this disease.
OBJECTIVE: To investigate the relationship between lower limb alignment and patellofemoral pain syndrome in young male runners.
METHODS: In the same running population, 21 patients with bilateral knee pain, 29 patients with single knee pain and 20 normal runners were collected from January 2021 to July 2022. Full-length X-ray examination of both lower limbs in standing position was performed in all subjects. The lateral distal femoral angle, medial tibial proximal angle, joint line congruence angle, hip-knee-ankle angle, and knee physical valgus angle were measured and statistically analyzed.
RESULTS AND CONCLUSION: There was no significant difference in the parameters between the left and right knees in each group (P > 0.05). Compared with the normal group, no significant changes in lateral distal femoral angle, medial tibial proximal angle, joint line congruence angle, and hip-knee-ankle angle were observed in the single knee pain group and double knee pain group, while the knee physical valgus angle was significantly increased in these two groups (P < 0.05). To conclude, increased knee physical valgus angle may be a risk factor for patellofemoral pain syndrome.

Key words: lower limb alignment, patellofemoral pain syndrome, knee physical valgus angle, risk factor, correlation research

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