scholarly journals Absolute Isolated Avulsion of the Anterolateral Complex of the Knee: A Segond Fracture

2017 ◽  
Vol 1 (6) ◽  
Author(s):  
Marcio de Castro Ferreira
Keyword(s):  
Segond Fracture ◽  
Anterolateral Complex

Predictive Value of the Magnetic Resonance Imaging–Based Coronal Lateral Collateral Ligament Sign on Adolescent Anterior Cruciate Ligament Reconstruction Graft Failure

2021 ◽  
Vol 49 (4) ◽  
pp. 935-940
Author(s):  
Brendon C. Mitchell ◽  
Matthew Y. Siow ◽  
Tracey Bastrom ◽  
James D. Bomar ◽  
Andrew T. Pennock ◽  
...  
Keyword(s):  
Internal Rotation ◽  
Acl Reconstruction ◽  
Graft Failure ◽  
Cruciate Ligament ◽  
Lateral Collateral Ligament ◽  
Anterior Tibial Translation ◽  
Complex Injury ◽  
Patient Reported ◽  
Anterolateral Complex ◽  
Tibial Translation

Background: The coronal lateral collateral ligament (LCL) sign is the presence of the full length of the LCL visualized on a single coronal magnetic resonance imaging (MRI) slice at the posterolateral corner of the knee. The coronal LCL sign has been shown to be associated with elevated measures of anterior tibial translation and internal rotation in the setting of anterior cruciate ligament (ACL) tear. Hypothesis: The coronal LCL sign (with greater anterior translation, internal rotation, and posterior slope of the tibia) will indicate a greater risk for graft failure after ACL reconstructive surgery. Study Design: Cohort study; Level of evidence, 3. Methods: Retrospective review was performed of adolescent patients with ACL reconstruction: a cohort without graft failure and a cohort with graft failure. MRI was utilized to measure tibial translation and femorotibial rotation and to identify the coronal LCL sign. The posterior tibial slope was measured on lateral radiographs. Patient-reported outcomes were collected. Results: We identified 114 patients with no graft failure and 39 patients with graft failure who met all criteria, with a mean follow-up time of 3.5 years (range, 2-9.4 years). Anterior tibial translation was associated with anterolateral complex injury ( P < .001) but not graft failure ( P = .06). Internal tibial rotation was associated with anterolateral complex injury ( P < .001) and graft failure ( P = .042). Posterior tibial slope was associated with graft failure ( P = .044). The coronal LCL sign was associated with anterolateral complex injury ( P < .001) and graft failure ( P = .013), with an odds ratio of 4.3 for graft failure (95% CI, 1.6-11.6; P = .003). Subjective patient-reported outcomes and return to previous level of sport were not associated with failure. Comparison of MRI before and after ACL reconstruction in the graft failure cohort demonstrated a reduced value in internal rotation ( P = .003) but no change in coronal LCL sign ( P = .922). Conclusion: Our study demonstrates that tibial internal rotation and posterior slope are independent predictors of ACL graft failure in adolescents. Although the value of internal rotation could be improved with ACL reconstruction, the presence of the coronal LCL sign persisted over time and was predictive of graft rupture (without the need to make measurements or memorize values of significant risk). Together, these factors indicate that greater initial knee deformity after initial ACL tear predicts greater risk for future graft failure.

scholarly journals Injuries to the anterolateral ligament are observed more frequently compared to lesions to the deep iliotibial tract (Kaplan fibers) in anterior cruciate ligamant deficient knees using magnetic resonance imaging

2021 ◽  
Author(s):  
Armin Runer ◽  
Dietmar Dammerer ◽  
Christoph Kranewitter ◽  
Johannes M. Giesinger ◽  
Benjamin Henninger ◽  
...  
Keyword(s):  
Pediatric Patients ◽  
Cruciate Ligament ◽  
Injury Rate ◽  
Anterolateral Ligament ◽  
Anatomical Reconstruction ◽  
Level Of Evidence ◽  
Iliotibial Tract ◽  
Anterolateral Complex ◽  
Anterior Cruciate ◽  
Combined Injuries

Abstract Purpose To determine the accuracy of detection, injury rate and inter- and intrarater reproducibility in visualizing lesions to the anterolateral ligament (ALL) and the deep portion of the iliotibial tract (dITT) in anterior cruciate ligament (ACL) deficient knees. Methods Ninety-one consecutive patients, out of those 25 children (age 14.3 ± 3.5 years), with diagnosed ACL tears were included. Two musculoskeletal radiologists retrospectively reviewed MRI data focusing on accuracy of detection and potential injuries to the ALL or dITT. Lesion were diagnosed in case of discontinued fibers in combination with intra- or peri-ligamentous edema and graded as intact, partial or complete tears. Cohen’s Kappa and 95% confidence intervals (95% CI) were determined for inter- and intrarater reliability measures. Results The ALL and dITT were visible in 52 (78.8%) and 56 (84.8%) of adult-and 25 (100%) and 19 (76.0%) of pediatric patients, respectively. The ALL was injured in 45 (58.5%; partial: 36.4%, compleate: 22.1%) patients. Partial and comleate tears, where visualized in 21 (40.4%) and 16 (30.8%) adult- and seven (28.0%) and one (4%) peditric patients. A total of 16 (21.3%; partial: 13.3%, compleate: 8.0%) dITT injuries were identified. Partal and complete lesions were seen in seven (12.5%) and five (8.9%) adult- and three (15.8%) and one (5.3%) pediatric patients. Combined injuries were visualized in nine (12.7%) patients. Inter-observer (0.91–0.95) and intra-observer (0.93–0.95) reproducibility was high. Conclusion In ACL injured knees, tears of the ALL are observed more frequently compared to lesions to the deep iliotibial tract. Combined injuries of both structures are rare. Clinically, the preoperative visualization of potentially injured structures of the anterolateral knee is crucial and is important for a more personalized preoperative planning and tailored anatomical reconstruction. The clinical implication of injuries to the anterolateral complex of the knee needs further investigation. Level of evidence II.

Pathogenesis of the Segond Fracture: Anatomic and MR Imaging Evidence of an Iliotibial Tract or Anterior Oblique Band Avulsion

Radiology ◽  
2001 ◽  
Vol 219 (2) ◽  
pp. 381-386 ◽  
Author(s):  
Juliana C. Campos ◽  
Christine B. Chung ◽  
Nittaya Lektrakul ◽  
Robert Pedowitz ◽  
Debra Trudell ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Segond Fracture ◽  
Iliotibial Tract

Is Treatment of Segond Fracture Necessary With Combined Anterior Cruciate Ligament Reconstruction?

2017 ◽  
Vol 46 (4) ◽  
pp. 832-838 ◽  
Author(s):  
Heath P. Melugin ◽  
Nick R. Johnson ◽  
Isabella T. Wu ◽  
Bruce A. Levy ◽  
Michael J. Stuart ◽  
...  
Keyword(s):  
Pivot Shift ◽  
Cruciate Ligament ◽  
Control Group ◽  
Study Group ◽  
Activity Levels ◽  
Segond Fracture ◽  
Acl Tear ◽  
Significant Difference ◽  
Ikdc Score ◽  
Grade 3

Background: There is a paucity of clinical information to guide the treatment of a combined anterior cruciate ligament (ACL) tear and Segond fracture. Purpose: To compare clinical outcomes, graft failure rates, and activity levels between patients undergoing ACL reconstruction (ACLR) with and without an untreated Segond fracture at a minimum 2-year follow-up. Study Design: Cohort study; Level of evidence, 3. Methods: This study included a group of patients with a combined ACL tear/untreated Segond fracture that was matched based on age, sex, body mass index, and graft type to a control group of patients with an ACL tear and no Segond fracture. All patients were treated with ACLR alone between the years of 2000 and 2015. The diagnosis of a Segond fracture, or bony avulsion of the anterolateral complex, was made by radiographic analysis. Data regarding the initial injury, surgical intervention, and physical examination findings were recorded. Clinical and functional outcomes were obtained using physical examination results, International Knee Documentation Committee (IKDC) subjective scores, and Tegner activity levels. Results: Twenty patients (16 male, 4 female) with a combined ACL tear/untreated Segond fracture with a mean age of 26.3 years (range, 13-44 years) were matched to a control group of 40 patients (32 male, 8 female) with an ACL tear and no Segond fracture with a mean age of 26.4 years (range, 13-47 years). The study group was followed for a mean of 59.1 months (range, 24-180 months) and the control group for a mean of 55.5 months (range, 24-120 months). The mean IKDC score was 86.5 (range, 54-100) for the study group compared with 93.0 (range, 54-100) for the control group ( P = .03). The graft rupture rate was 10% for both groups ( P = .97). The mean time to rupture was 33.0 months (range, 21-45 months) in the study group and 63.5 months (range, 39-88 months) in the control group ( P = .24). Patients in the study group had significantly more anteroposterior instability by preoperative Lachman testing than those in the control group (control group: 0 normal, 3 grade 1+, 37 grade 2+, 0 grade 3+; study group: 0 normal, 1 grade 1+, 10 grade 2+, 9 grade 3+; P = .0001). There was no significant difference between the 2 groups in regard to postoperative Lachman testing (control group: 35 normal, 3 grade 1+, 2 grade 2+, 0 grade 3+; study group: 17 normal, 3 grade 1+, 0 grade 2+, 0 grade 3+; P = .31). Patients in the study group had significantly more instability by preoperative pivot-shift testing than those in the control group (control group: 0 normal, 7 grade 1+, 33 grade 2+, 0 grade 3+; study group: 1 normal, 1 grade 1+, 11 grade 2+, 7 grade 3+; P = .0003). No significant difference was found between the 2 groups for postoperative pivot-shift testing (control group: 36 normal, 2 grade 1+, 2 grade 2+, 0 grade 3+; study group: 18 normal, 1 grade 1+, 1 grade 2+, 0 grade 3+; P = .61) or final Tegner activity level (median, 6). Conclusion: At midterm follow-up, patients undergoing ACLR with and without a Segond fracture had similar pivot-shift test results, graft failure rates, and activity levels. The IKDC score was statistically worse in the patients with a combined ACL tear/untreated Segond fracture, but the difference was less than the minimal clinically important difference for the IKDC score. These findings suggest that patients with a combined ACL tear/untreated Segond fracture can have comparable outcomes to patients with an ACL tear and no Segond fracture when treated with ACLR alone.

scholarly journals Segond fracture

2014 ◽  
Author(s):  
Fakhry Ebouda
Keyword(s):  
Segond Fracture

scholarly journals Combined ACL reconstruction and Segond fracture fixation fails to abolish anterolateral rotatory instability

2018 ◽  
pp. bcr-2018-224457 ◽  
Author(s):  
Levi Reina Fernandes ◽  
Herve Ouanezar ◽  
Adnan Saithna ◽  
Bertrand Sonnery-Cottet
Keyword(s):  
Acl Reconstruction ◽  
Fracture Fixation ◽  
Segond Fracture ◽  
Rotatory Instability ◽  
Anterolateral Rotatory Instability

The Segond Fracture Is an Avulsion of the Anterolateral Complex

2017 ◽  
Vol 45 (10) ◽  
pp. 2247-2252 ◽  
Author(s):  
Humza Shaikh ◽  
Elmar Herbst ◽  
Ata Amir Rahnemai-Azar ◽  
Marcio Bottene Villa Albers ◽  
Jan-Hendrik Naendrup ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Tibial Plateau ◽  
Anterolateral Ligament ◽  
Fibular Head ◽  
Lateral Tibial Plateau ◽  
Segond Fracture ◽  
Posterior Aspect ◽  
Tibial Insertion ◽  
Anterolateral Capsule ◽  
The Mean

Background: The Segond fracture was classically described as an avulsion fracture of the anterolateral capsule of the knee. Recently, some authors have attributed its pathogenesis to the “anterolateral ligament” (ALL). Biomechanical studies that have attempted to reproduce this fracture in vitro have reported conflicting findings. Purpose: To determine the anatomic characteristics of the Segond fracture on plain radiographs and magnetic resonance imaging (MRI), to compare this location with the location of the ALL described in prior radiographic and anatomic publications, and to determine the fracture’s attachments to the soft tissue anterolateral structures of the knee. Study Design: Case series; Level of evidence, 4. Methods: A total of 36 anterior cruciate ligament–injured patients with Segond fractures (33 male, 3 female; mean age, 23.2 ± 8.4 years) were enrolled. MRI scans were reviewed to determine the anatomic characteristics of the Segond fracture, including the following: proximal-distal (PD) length, anterior-posterior (AP) width, medial-lateral (ML) width, PD distance to the lateral tibial plateau, AP distance to the Gerdy tubercle (GT), and AP distance from the GT to the posterior aspect of the fibular head. The attachment of the anterolateral structures to the Segond fragment was then categorized as the iliotibial band (ITB) or anterolateral capsule. Interrater reliability of the measurements was determined by calculating the Spearman rank correlation coefficient. MEDLINE, Web of Science, and the Cochrane Library were searched from inception to May 2016 for the following keywords: (1) “Segond fracture,” (2) “anterolateral ligament,” (3) “knee avulsion,” (4) “lateral tibia avulsion,” and (5) “tibial plateau avulsion.” All studies describing the anatomic location of the Segond fracture and the ALL were included in the systematic review. Results: On plain radiographs, the mean distance of the midpoint of the fracture to the lateral tibial plateau was 4.6 ± 2.2 mm. The avulsed fracture had a mean PD length of 9.2 ± 2.5 mm and a mean ML width of 2.4 ± 1.4 mm. On MRI, the mean distance of the proximal fracture to the tibial plateau was 3.4 ± 1.6 mm. The mean PD length was 8.7 ± 2.2 mm, while the mean AP width was 11.1 ± 2.2 mm. The mean distance between the GT and the center of the fracture was 26.9 ± 3.3 mm, while the mean distance between the GT and the posterior fibular head was 53.9 ± 4.4 mm. The mean distance of the midpoint of the fracture to the tibial plateau was 7.8 ± 2.7 mm, while the center of the fracture was 49.9% of the distance between the GT and the posterior aspect of the fibular head. Analysis of soft tissue structures attached to the fragment revealed that the ITB attached in 34 of 36 patients and the capsule attached in 34 of 36 patients. One patient had only the capsule attached, another had only the ITB attached, and the last showed neither clearly attached. A literature review of 20 included studies revealed no difference between the previously described Segond fracture location and the tibial insertion of the ALL. Conclusion: The results of this study confirmed that while the Segond fracture occurs at the location of the tibial insertion of the ALL, as reported in the literature, MRI was unable to identify any distinct ligamentous attachment. MRI analysis revealed that soft tissue attachments to the Segond fracture were the posterior fibers of the ITB and the lateral capsule in 94% of patients.

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