Scholarlink

Background <p>This study aimed to evaluate lower extremity alignment in football players with and without genu varum using magnetic resonance imaging (MRI) and to investigate the underlying mechanisms and contributing factors to malalignment.</p> Methods <p>This prospective case-control study included 36 male football players aged 16–19 years, divided into two groups: 18 with genu varum and 18 controls with normal lower extremity alignment. Full-length lower extremity MRI was used to assess alignment parameters. The isokinetic strength of the concentric knee extensor-flexor and concentric hip abductor-adductor muscles was measured using an isokinetic dynamometer at angular velocities of 60°/sec and 180°/sec. Logistic regression was used to evaluate the risk factors for genu varum.</p> Results <p>Genu varum group had a mean mechanical axis deviation (MAD) of 14 ± 5&#xa0;mm (<i>p</i> &lt; 0.001), with 11 players exceeding the clinical cutoff of 15&#xa0;mm. Significant differences were observed in the lateral distal tibial angle (LDTA) (<i>p</i> = 0.014), lateral proximal femoral angle (LPFA) (<i>p</i> = 0.017), and medial distal femoral angle (mLDFA) (<i>p</i> = 0.002) between the groups. Muscle strength values were comparable between the groups, except for the hip adductor-abductor strength ratio at 60°/sec, which was significantly lower in the genu varum group (<i>p</i> = 0.008), while all other comparisons were non-significant (<i>p</i> &gt; 0.05). The regression analysis demonstrated that the mechanisms responsible for varus alignment in football players differ between the dominant and non-dominant leg.</p> Conclusions <p>The findings in this study suggest that the proximal tibial deformity is a key factor in malalignment among football players with genu varum. Differences in alignment were observed between dominant and non-dominant legs. Strength values were similar between players with and without varus alignment, except for the 60˚/sec angular velocity Add/Abd ratio.</p> Clinical trial registration <p>NCT06606964 / 16.09.2024.</p> Level of evidence <p>Level III.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The influence of the lower limb components on genu varum in football players: a full leg length magnetic resonance imaging study

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年2月25日

查看全文
  • Ali Işın,
  • Özkan Köse,
  • Emre Ak,
  • Emel Emir Yetim,
  • Can Çevikol,
  • Tuba Melekoğlu

摘要

Background

This study aimed to evaluate lower extremity alignment in football players with and without genu varum using magnetic resonance imaging (MRI) and to investigate the underlying mechanisms and contributing factors to malalignment.

Methods

This prospective case-control study included 36 male football players aged 16–19 years, divided into two groups: 18 with genu varum and 18 controls with normal lower extremity alignment. Full-length lower extremity MRI was used to assess alignment parameters. The isokinetic strength of the concentric knee extensor-flexor and concentric hip abductor-adductor muscles was measured using an isokinetic dynamometer at angular velocities of 60°/sec and 180°/sec. Logistic regression was used to evaluate the risk factors for genu varum.

Results

Genu varum group had a mean mechanical axis deviation (MAD) of 14 ± 5 mm (p < 0.001), with 11 players exceeding the clinical cutoff of 15 mm. Significant differences were observed in the lateral distal tibial angle (LDTA) (p = 0.014), lateral proximal femoral angle (LPFA) (p = 0.017), and medial distal femoral angle (mLDFA) (p = 0.002) between the groups. Muscle strength values were comparable between the groups, except for the hip adductor-abductor strength ratio at 60°/sec, which was significantly lower in the genu varum group (p = 0.008), while all other comparisons were non-significant (p > 0.05). The regression analysis demonstrated that the mechanisms responsible for varus alignment in football players differ between the dominant and non-dominant leg.

Conclusions

The findings in this study suggest that the proximal tibial deformity is a key factor in malalignment among football players with genu varum. Differences in alignment were observed between dominant and non-dominant legs. Strength values were similar between players with and without varus alignment, except for the 60˚/sec angular velocity Add/Abd ratio.

Clinical trial registration

NCT06606964 / 16.09.2024.

Level of evidence

Level III.