Patient-Reported Outcomes of Bicruciate Multiligament Versus Single Cruciate Multiligament Knee Injuries

Am J Sports Med. 2025 Jan;53(1):138-146. doi: 10.1177/03635465241293743.

Abstract

Background: Multiligament knee injuries (MLKIs) are heterogeneous, and bicruciate knee ligament injuries are considered a serious form of this injury. The current literature tends not to distinguish between single and bicruciate MLKI when reporting outcomes.

Purpose: To investigate patient-reported outcomes after surgical treatment of MLKI comparing single cruciate MLKI with bicruciate MLKI. The secondary aim was to investigate the influence of different factors on patient-reported outcomes after surgery.

Study design: Cohort study; Level of evidence, 3.

Methods: This study was designed as a cross-sectional cohort study. Patients who underwent surgical treatment for MLKI at a single level 1 trauma center between January 2013 and December 2020 were included in this study. Patient-reported outcomes included the Tegner score, Lysholm score, International Knee Documentation Committee (IKDC) subjective knee form, Knee injury and Osteoarthritis Outcome Survey (KOOS), and a visual analog scale for pain.

Results: Of the 191 patients meeting the inclusion criteria, 124 (65%) agreed to participate and had a complete data set with a follow-up time at a mean 74 ± 27 months. Patients with single cruciate MLKI (type I) had significantly higher scores for IKDC (P = .007), Lysholm (P = .012), KOOS Pain (P = .04), KOOS Activities of Daily Living (P = .01), KOOS Sport and Recreation (P = .005), KOOS Quality of Life (P = .04), KOOS4 (which considers the subscales of Pain, Symptoms, Sport and Recreation, and Quality of Life) (P = .01), Tegner (P = .04), and visual analog scale for pain during activity (P = .004) when compared with patients with bicruciate MLKI (type II-type IV). Furthermore, age was significantly associated with a lower IKDC (P = .001), and an increased severity of injury was significantly associated with IKDC (P = .015), KOOS4 (P = .022), and Lysholm (P = .029) scores.

Conclusion: MLKIs involving a single cruciate ligament had significantly higher patient-reported postoperative outcome measures compared with bicruciate MLKIs. Age and type of injury were important predictors for outcomes. Patients presenting with dislocated knees had lower patient-reported outcomes; however, there was no significant difference in outcomes between bicruciate MLKIs and patients presenting with dislocated knees.

Keywords: bicruciate ligament; multiligament knee injury; single cruciate ligament; subjective outcome measure.

Publication types

  • Comparative Study

MeSH terms

  • Adult
  • Anterior Cruciate Ligament Injuries / surgery
  • Cross-Sectional Studies
  • Female
  • Humans
  • Knee Injuries* / surgery
  • Ligaments, Articular / injuries
  • Ligaments, Articular / surgery
  • Male
  • Middle Aged
  • Patient Reported Outcome Measures*
  • Young Adult