Minghao Li, Qiang Liu, Guoqing Cui
Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, China.
Beijing Key Laboratory of Sports Injuries, Beijing, China.
BMC Musculoskelet Disord. 2025 May 6;26(1):443. doi: 10.1186/s12891-025-08686-w.
To comprehensively summarize the characteristics of cartilage and other knee joint lesions associated with excessive lateral pressure syndrome (ELPS).
Patients diagnosed with ELPS and admitted to our department between October 1, 2015, and September 30, 2023 were retrospectively included in this study. Prior to undergoing arthroscopic examination and surgery, all included patients underwent knee MRI evaluation. The lesion regions and corresponding lesion grading of each knee joint were meticulously documented, and the concordance between imaging and arthroscopic evaluation was quantified. All patients were categorized based on age and gender, and further comparison of each group was made.
There were 82 male participants and 59 female participants included. No significant differences in age or side distribution were observed. Regarding gender comparison, there were no statistically significant differences in imaging observations (P = 0.940) and arthroscopic examinations (P = 0.237). There were no significant differences observed in radiographic incidences among all three groups divided by age, while during arthroscopic examination, a significantly higher incidence was found in over 50 group compared to both those under 20 and those aged between 20 and 50. The incidence of Graded that both radiographic evaluation and arthroscopic observation demonstrated a significantly higher incidence in the > 50 years old group compared to the other two groups.
In addition to patellofemoral joint cartilage lesions, excessive lateral pressure syndrome (ELPS) of the patella can also cause cartilage lesions in the central region of the medial tibial plateau and posterior region of the lateral tibial plateau. These specific sites of lesion are not influenced by gender or age. The incidence of full-thickness cartilage defects gradually increases with age.
The Ethics Committee of the Third Hospital of Peking University approved this study. (No.: IRB00006761-M2021002) LEVEL OF EVIDENCE: IV Case series.
全面总结与外侧压力综合征（ELPS）相关的软骨及其他膝关节病变的特征。
回顾性纳入2015年10月1日至2023年9月30日期间在我科诊断为ELPS并入院的患者。所有纳入患者在接受关节镜检查和手术前均接受膝关节MRI评估。详细记录每个膝关节的病变区域及相应病变分级，并对影像学与关节镜评估的一致性进行量化。所有患者按年龄和性别分类，并对每组进行进一步比较。
纳入男性参与者82例，女性参与者59例。年龄及患侧分布无显著差异。性别比较方面，影像学观察（P = 0.940）和关节镜检查（P = 0.237）均无统计学显著差异。按年龄划分的三组中，影像学发病率无显著差异，而在关节镜检查中，50岁以上组的发病率显著高于20岁以下组和20至50岁组。在>50岁组中，影像学评估和关节镜观察均显示分级发病率显著高于其他两组。
除髌股关节软骨病变外，髌骨外侧压力综合征（ELPS）还可导致胫骨内侧平台中央区域及胫骨外侧平台后部区域的软骨病变。这些特定病变部位不受性别或年龄影响。全层软骨缺损的发病率随年龄逐渐增加。
北京大学第三医院伦理委员会批准了本研究。（编号：IRB00006761-M2021002）证据水平：IV级病例系列。
