Valgus stress radiography following superficial medial collateral ligament reconstruction using a modified LaPrade technique with adjustable loop femoral fixation

Acta Orthop Belg. 2020 Jun;86(2):280-286.

Abstract

Purpose of this study was to assess postoperative laxity of MCL reconstructions utilizing a modified LaPrade superficial MCL reconstruction. We retrospectively reviewed post-operative valgus stress radiographs in 23 multiligament injured patients who underwent concurrent sMCL and cruciate ligament reconstruction by a single surgeon. Post- operatively, 23 patients underwent valgus stress radiographs that were assessed at a mean of 8.7 months (range: 4-13 months), and mean SSD was 0.64mm ± 0.42mm. Eight patients underwent both pre- and post-operative valgus stress radiographs. Post-operative (0.09mm ± 0.63mm) SSD was found to be significantly reduced compared to pre-operative (2.07mm ± 0.44mm) SSD (mean diff. = 1.98mm, 95% CI = 0.72-3.24, P=0.007). Inter-observer reliability value for medial compartment gap measurement was 0.91 with a 95% confidence interval of 0.34- 0.97. In conclusion, presented technique results in excellent static stability of the knee as measured by valgus stress radiography at a minimum of 6 months postoperative. Level of Evidence: IV.

MeSH terms

  • Adult
  • Arthroplasty / adverse effects*
  • Arthroplasty / methods
  • Female
  • Humans
  • Joint Instability* / diagnostic imaging
  • Joint Instability* / etiology
  • Joint Instability* / physiopathology
  • Knee Joint* / pathology
  • Knee Joint* / physiopathology
  • Knee Joint* / surgery
  • Male
  • Medial Collateral Ligament, Knee* / injuries
  • Medial Collateral Ligament, Knee* / pathology
  • Medial Collateral Ligament, Knee* / physiopathology
  • Medial Collateral Ligament, Knee* / surgery
  • Outcome Assessment, Health Care / methods
  • Patient Positioning / methods
  • Perioperative Period / methods
  • Postoperative Complications* / diagnostic imaging
  • Postoperative Complications* / etiology
  • Postoperative Complications* / physiopathology
  • Radiography / methods*
  • Reproducibility of Results
  • Retrospective Studies