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Knee Surgery, Sports Traumatology, Arthroscopy

, Volume 22, Issue 9, pp 2173–2180 | Cite as

Rotational profile alterations after anatomic posterolateral corner reconstructions in multiligament injured knees

  • Nicolas TardyEmail author
  • Caroline Mouton
  • Philippe Boisrenoult
  • Daniel Theisen
  • Philippe Beaufils
  • Romain Seil
Knee

Abstract

Purpose

Injuries of the posterolateral corner (PLC) are rare and severe knee injuries, resulting in posterolateral rotatory instability and an increase in external rotation. Surgical reconstruction techniques reproducing the normal anatomy showed promising results. In vivo evaluations of static rotational knee laxity at 30° of knee flexion have not been reported so far. The purpose of this study was to evaluate static rotational knee laxity after anatomic PLC reconstructions.

Methods

This is a retrospective clinical cohort study. Twenty patients with PLC reconstructions with an average follow-up time of 39 ± 22 months and no history of knee trauma or surgery of the contralateral knee were included in the study. They underwent a routine clinical examination and static rotational laxity measurements at 30° of knee flexion in the prone position. Side-to-side differences were recorded and compared to a group of matched controls.

Results

The postoperative IKDC score was graded A for 8 patients, B for 16, C for 6 and D for one patient. The primary goal of the surgical procedure which consists in reducing excessive external tibiofemoral rotation could be reached in 18 of the 20 patients (90 %). Anatomic PLC reconstructions yielded a comparable rotational profile in operated and healthy knees in 7 patients (35 %). Thirteen patients (65 %) presented a significantly altered rotational profile in comparison with a healthy control group. Unexpected increases in internal rotation were found in 8 patients (40 %).

Conclusion

Anatomic PLC reconstructions reduced excessive external tibiofemoral rotation in a vast majority of patients. Static rotational laxity measurements allowed for a determination of the patients’ individual rotational profile after PLC reconstructions. This profile was normalised in only one-third of the patients. The understanding of this finding needs further investigation as well as the clinical impact of rotational profile alterations on knee function.

Level of evidence

Diagnostic studies, Level III.

Keywords

Knee Posterolateral corner injuries Anatomic posterolateral knee 

Notes

Acknowledgments

The present project is supported by the National Research Fund, Luxembourg.

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Nicolas Tardy
    • 1
    Email author
  • Caroline Mouton
    • 2
  • Philippe Boisrenoult
    • 1
  • Daniel Theisen
    • 2
  • Philippe Beaufils
    • 1
  • Romain Seil
    • 2
    • 3
  1. 1.Centre Hospitalier de VersaillesLe ChesnayFrance
  2. 2.Sports Medicine Research LaboratoryPublic Research Centre for HealthLuxembourgLuxembourg
  3. 3.Department of Orthopaedic SurgeryCentre Hospitalier Luxembourg—Clinique d’EichLuxembourgLuxembourg

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