de Vasconcelos Diego Protasio, Aidar Felipe J, Lima Tarcisio Brandao, Filho Flavio Martins do Nascimento, Mendonça Igor Leonardo Alves, Díaz-de-Durana Alfonso López, Garrido Nuno Domingos, Santiago Michael Silveira, Junior Walderi Monteiro da Silva
Postgraduate Program of Physical Education, Federal University of Sergipe (UFS), São Cristovão 49100-000, Brazil.
Musculoskeletal System Unit, University Hospital, Federal University of Sergipe (UFS), Aracaju 49060-025, Brazil.
Clin Pract. 2022 Jun 10;12(3):425-435. doi: 10.3390/clinpract12030047.
Dynamic knee valgus (DKV) is a frontal plane knee kinematic alteration that has been associated with patellofemoral pain (PFP) in female runners. DKV is commonly assessed in clinical practice by measuring frontal plane knee projection angle (FPPA) during squat tests. However, it remains unclear whether the DKV observed in these tests is similar to or correlates with that observed during running in female runners. The aims of this cross-sectional study were to correlate and compare DKV, by measuring FPPA values, in a lateral step-down (LSD) squat test and running in female runners with and without PFP. A two-dimensional (2D) video analysis of the LSD test and running was carried out for 21 asymptomatic female runners and 17 PFP female runners in order to determine FPPA values. A Pearson correlation test and a factorial ANOVA with Bonferroni post hoc correction were used for statistical analysis. The FPPAs recorded in the LSD test were significantly higher than those recorded during running in the asymptomatic (16.32° ± 5.38 vs. 4.02° ± 3.26, p < 0.01) and PFP groups (17.54° ± 7.25 vs. 4.64° ± 3.62, p < 0.01). No significant differences were found in FPPA values between asymptomatic and PFP runners during the LSD test (16.32° ± 5.38 vs. 17.54° ± 7.25, p = 0.55) and running (4.02° ± 3.26 vs. 4.64° ± 3.62, p = 0.58). There was a small (r < 0.3) and non-significant (p > 0.05) correlation in FPPAs between the LSD test and running in both groups. According to our results, DKV was not similar during the LSD test and running, and there was no significant correlation in FPPA values between the LSD test and running in both groups. Therefore, clinicians and therapists should be aware of these findings when using the LSD test in clinical practice to evaluate DKV in female runners with or without PFP.
动态膝外翻（DKV）是一种额状面膝关节运动学改变，与女性跑步者的髌股疼痛（PFP）有关。在临床实践中，通常通过在深蹲测试期间测量额状面膝关节投影角（FPPA）来评估DKV。然而，这些测试中观察到的DKV是否与女性跑步者跑步时观察到的DKV相似或相关仍不清楚。这项横断面研究的目的是通过测量FPPA值，在有和没有PFP的女性跑步者的侧向下蹲（LSD）测试和跑步中，对DKV进行相关性分析和比较。对21名无症状女性跑步者和17名PFP女性跑步者进行了LSD测试和跑步的二维（2D）视频分析，以确定FPPA值。使用Pearson相关性检验和带有Bonferroni事后校正的析因方差分析进行统计分析。在无症状组（16.32°±5.38对4.02°±3.26，p<0.01）和PFP组（17.54°±7.25对4.64°±3.62，p<0.01）中，LSD测试中记录的FPPA明显高于跑步时记录的FPPA。在LSD测试（16.32°±5.38对17.54°±7.25，p=0.55）和跑步（4.02°±3.26对4.64°±3.62，p=0.58）期间，无症状和PFP跑步者之间的FPPA值没有发现显著差异。两组中，LSD测试和跑步之间FPPA的相关性较小（r<0.3）且无统计学意义（p>0.05）。根据我们的结果，LSD测试和跑步期间的DKV不相似，两组中LSD测试和跑步之间的FPPA值没有显著相关性。因此，临床医生和治疗师在临床实践中使用LSD测试评估有或没有PFP的女性跑步者中的DKV时，应了解这些发现。
