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Knee Surgery, Sports Traumatology, Arthroscopy

, Volume 25, Issue 12, pp 3687–3694 | Cite as

Posteromedially placed plates with anterior staple reinforcement are not successful in decreasing tibial slope in opening-wedge proximal tibial osteotomy

  • Chase S. Dean
  • Jorge Chahla
  • Lauren M. Matheny
  • Tyler R. Cram
  • Samuel G. Moulton
  • Grant J. Dornan
  • Justin J. Mitchell
  • Robert F. LaPradeEmail author
Knee

Abstract

Purpose

To document the effectiveness of a novel technique to decrease tibial slope in patients who underwent a proximal opening-wedge osteotomy with an anteriorly sloped plate placed in a posteromedial position. The hypothesis was that posteromedial placement of an anteriorly sloped osteotomy plate with an adjunctive anterior bone staple on the tibia would decrease, and maintain, the tibial slope correction at a minimum of 6 months following the osteotomy.

Methods

All patients who underwent biplanar medial opening-wedge proximal tibial osteotomy with anterior staple augmentation to decrease sagittal plane tibial slope were included, and data were collected prospectively and reviewed retrospectively. Indications for decreasing tibial slope included medial compartment osteoarthritis with at least one of the following: ACL deficiency, posterior meniscus deficiency, or flexion contracture. Preoperative, immediate postoperative, and 6-month postoperative radiographs were reviewed.

Results

Twenty-one patients (14 males and 7 females) were included in the study with a mean age of 36.5 years. Intrarater and interrater reliability of slope measurements were excellent at all time points (ICC ≥ 0.94, ICC ≥ 0.85). The osteotomy resulted in an average tibial slope decrease of 0.8 from preoperative (n.s.). At 6-month postoperative, average slope was not significantly different from time-zero postoperative slope (mean = +0.2°).

Conclusions

The most important finding of this study was that posteromedial placement of an anteriorly angled osteotomy plate augmented with an anterior staple during a biplanar medial opening-wedge proximal tibial osteotomy did not decrease sagittal plane tibial slope. Whether a staple was effective in maintaining tibial slope from time zero to 6 months postoperatively was unable to be assessed due to no significant change in tibial slope from the preoperative postoperative states. The results of this study note that current osteotomy plate designs and surgical techniques are not effective in decreasing sagittal plane tibial slope.

Level of evidence

IV.

Keywords

Proximal tibial opening-wedge osteotomy High tibial opening-wedge osteotomy Posterior tibial slope Sagittal plane tibial slope Tibial staple 

Notes

Acknowledgments

The author, Robert F. LaPrade is on the editorial/governing board for AJSM and KSSTA and has member/committee appointments for AOSSM, ISAKOS, AANA, and ESSKA. Dr. LaPrade is a consultant and receives royalties from Arthrex, Ossur, Smith & Nephew. The Steadman Philippon Research Institute has received financial support not related to this reaerch from the following: Arthrex Inc, Ossur Americas, Smith & Nephew Endoscopy.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Funding

No funds were received to do this research.

Ethical approval

This study was approved and performed in accordance with the standards set forth by our institutional review board.

Informed consent

Informed consent was obtained for each patient in the study prior to the surgical procedure.

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Copyright information

© European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2016

Authors and Affiliations

  • Chase S. Dean
    • 2
  • Jorge Chahla
    • 2
  • Lauren M. Matheny
    • 2
  • Tyler R. Cram
    • 1
    • 2
  • Samuel G. Moulton
    • 2
  • Grant J. Dornan
    • 2
  • Justin J. Mitchell
    • 2
  • Robert F. LaPrade
    • 1
    Email author
  1. 1.The Steadman ClinicVailUSA
  2. 2.Steadman Philippon Research InstituteVailUSA

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