Alexander H King1, Aaron J Krych2, Matthew R Prince3, Paul L Sousa4, Michael J Stuart5, Bruce A Levy6. 1. Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. King.Alexander@Mayo.edu. 2. Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. Krych.Aaron@Mayo.edu. 3. Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. Prince.Matthew@Mayo.edu. 4. Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. Sousa.Paul@Mayo.edu. 5. Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. Stuart.Michael@Mayo.edu. 6. Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. Levy.Bruce@Mayo.edu.
Abstract
PURPOSE: A paucity of data exists on the effects of articular cartilage and meniscal injury in the setting of knee dislocations. The purpose of this study is to determine whether concomitant intra-articular injuries at the time of multiligament reconstruction for knee dislocation are associated with inferior outcomes. METHODS: The records of patients who underwent surgical treatment for multiligament knee injury between 1992 and 2012 were retrospectively reviewed. Patients included had a PCL-based multiligament knee injury or a minimum of three disrupted ligaments, both indicative of knee dislocation. A logistic regression model was used to determine whether articular cartilage injuries (grade 2 involving ≥50 % of the condylar width or greater, or any grade III/IV lesions) and meniscus tears are predictors of IKDC outcome scores collected at a minimum of 2 years postoperatively. RESULTS: Of the 121 patients who met inclusion criteria, 2-year minimum follow-up was available on 95 patients (79 %). The cohort was 77 % male and had a median age of 32 years (16-62) at the time of surgery and was followed for an average of 6 years. Articular cartilage injury was present in 40 % of knees: medial femoral condyle (20 %); medial tibial plateau (9 %); lateral femoral condyle (5 %); lateral tibial plateau (4 %); patella (18 %); trochlear (5 %). Meniscal injury was present in 56 % of patients (isolated medial, 22 %; isolated lateral, 22 %; combined, 12 %). IKDC scores were significantly lower for patients with any cartilage damage (p = 0.03), combined medial and lateral meniscus tears (p = 0.02), medial-sided articular cartilage damage (p = 0.03), medial femoral condyle (p = 0.04) and trochlear (p = 0.03) lesions. CONCLUSION: Articular cartilage damage and meniscus tears are frequently associated with a knee dislocation. This study showed IKDC scores were significantly lower for patients with cartilage damage or combined medial and lateral meniscus tears at mid-term follow-up of 6 years. LEVEL OF EVIDENCE: IV.
PURPOSE: A paucity of data exists on the effects of articular cartilage and meniscal injury in the setting of knee dislocations. The purpose of this study is to determine whether concomitant intra-articular injuries at the time of multiligament reconstruction for knee dislocation are associated with inferior outcomes. METHODS: The records of patients who underwent surgical treatment for multiligament knee injury between 1992 and 2012 were retrospectively reviewed. Patients included had a PCL-based multiligament knee injury or a minimum of three disrupted ligaments, both indicative of knee dislocation. A logistic regression model was used to determine whether articular cartilage injuries (grade 2 involving ≥50 % of the condylar width or greater, or any grade III/IV lesions) and meniscus tears are predictors of IKDC outcome scores collected at a minimum of 2 years postoperatively. RESULTS: Of the 121 patients who met inclusion criteria, 2-year minimum follow-up was available on 95 patients (79 %). The cohort was 77 % male and had a median age of 32 years (16-62) at the time of surgery and was followed for an average of 6 years. Articular cartilage injury was present in 40 % of knees: medial femoral condyle (20 %); medial tibial plateau (9 %); lateral femoral condyle (5 %); lateral tibial plateau (4 %); patella (18 %); trochlear (5 %). Meniscal injury was present in 56 % of patients (isolated medial, 22 %; isolated lateral, 22 %; combined, 12 %). IKDC scores were significantly lower for patients with any cartilage damage (p = 0.03), combined medial and lateral meniscus tears (p = 0.02), medial-sided articular cartilage damage (p = 0.03), medial femoral condyle (p = 0.04) and trochlear (p = 0.03) lesions. CONCLUSION:Articular cartilage damage and meniscus tears are frequently associated with a knee dislocation. This study showed IKDC scores were significantly lower for patients with cartilage damage or combined medial and lateral meniscus tears at mid-term follow-up of 6 years. LEVEL OF EVIDENCE: IV.
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