Bilateral comparisons of quadriceps thickness after anterior cruciate ligament reconstruction

Joo Hyun Lee, Soul Cheon, Hyung Pil Jun, Yu Lun Huang, Eunwook Chang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Background and objectives: Anterior cruciate ligament reconstruction (ACLR) often results in quadricep atrophy. The purpose of this study was to compare the bilateral thickness of each quadricep component before and after ACLR. Materials and Methods: Cross-sectional study design. In 14 patients who underwent ACLR, bilateral quadricep muscle thicknesses were measured using a portable ultrasound device, 1 h before and 48–72 h after ACLR. Two-way analysis of variance (ANOVA) was used to compare muscle thickness pre-and post-ACLR between the limbs. Results: The primary finding was that the vastus intermedius (VI) muscle was significantly smaller in the reconstructed limb after ACLR compared to that in the healthy limb (Reconstructed limb; RCL = Pre-operated (PRE): 19.89 ± 6.91 mm, Post-operated(POST): 16.04 ± 6.13 mm, Healthy limb; HL = PRE: 22.88 ± 6.07, POST: 20.90 ± 5.78 mm, F = 9.325, p = 0.009, η2p = 0.418). Conclusions: The results represent a selective surgical influence on the quadricep muscle thickness. These findings highlight the need of advanced strengthening exercises in order to restore VI thickness after ACLR.

Original languageEnglish
Article number335
Pages (from-to)1-9
Number of pages9
JournalMedicina (Lithuania)
Issue number7
Publication statusPublished - 2020 Jul
Externally publishedYes


  • Anterior cruciate ligament reconstruction
  • Muscle atrophy
  • Quadriceps
  • Vastus intermedius

ASJC Scopus subject areas

  • General Medicine


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