scholarly journals Diagnostic performance of volume and limited oblique MRI of the anterior cruciate ligament compared to knee arthroscopy

Author(s):  
Paula J Richards
2016 ◽  
Vol 49 (2) ◽  
pp. 69-74 ◽  
Author(s):  
Francisco Abaeté Chagas-Neto ◽  
Marcello Henrique Nogueira-Barbosa ◽  
Mário Müller Lorenzato ◽  
Rodrigo Salim ◽  
Maurício Kfuri-Junior ◽  
...  

Abstract Objective: To compare the diagnostic performance of the three-dimensional turbo spin-echo (3D TSE) magnetic resonance imaging (MRI) technique with the performance of the standard two-dimensional turbo spin-echo (2D TSE) protocol at 1.5 T, in the detection of meniscal and ligament tears. Materials and Methods: Thirty-eight patients were imaged twice, first with a standard multiplanar 2D TSE MR technique, and then with a 3D TSE technique, both in the same 1.5 T MRI scanner. The patients underwent knee arthroscopy within the first three days after the MRI. Using arthroscopy as the reference standard, we determined the diagnostic performance and agreement. Results: For detecting anterior cruciate ligament tears, the 3D TSE and routine 2D TSE techniques showed similar values for sensitivity (93% and 93%, respectively) and specificity (80% and 85%, respectively). For detecting medial meniscal tears, the two techniques also had similar sensitivity (85% and 83%, respectively) and specificity (68% and 71%, respectively). In addition, for detecting lateral meniscal tears, the two techniques had similar sensitivity (58% and 54%, respectively) and specificity (82% and 92%, respectively). There was a substantial to almost perfect intraobserver and interobserver agreement when comparing the readings for both techniques. Conclusion: The 3D TSE technique has a diagnostic performance similar to that of the routine 2D TSE protocol for detecting meniscal and anterior cruciate ligament tears at 1.5 T, with the advantage of faster acquisition.


2020 ◽  
Vol 8 (7_suppl6) ◽  
pp. 2325967120S0039
Author(s):  
Nikhil Mandava ◽  
Demetris Delos ◽  
Katherine Vadasdi ◽  
R. Greene ◽  
Marc Kowalsky ◽  
...  

Objectives: Opioid prescriptions following knee arthroscopy vary substantially, ranging from 15 to 60 opioid pills.[1-3] Expert panel guidelines recommend up to 30 pills for knee arthroscopy and 60 pills for anterior cruciate ligament reconstruction (ACLR) using an autograft; however, these recommendations are based on consensus rather than evidence.[4] Currently, orthopaedic surgeons do not possess any evidence driven guidelines for opioid prescriptions following knee arthroscopy or ACLR. The purpose of this study was to record patients’ postoperative opioid requirement to develop evidence driven prescription guidelines for knee arthroscopy and ACLR. Tepolt FA, Bido J, Burgess S, Micheli LJ, Kocher MS. Opioid Overprescription After Knee Arthroscopy and Related Surgery in Adolescents and Young Adults. Arthroscopy. 2018;34(12):3236-3243. Gardner V, Gazzaniga D, Shepard M, et al. Monitoring Postoperative Opioid Use Following Simple Arthroscopic Meniscectomy: A Performance-Improvement Strategy for Prescribing Recommendations and Community Safety. JB JS Open Access. 2018;3(4):e0033. Wojahn RD, Bogunovic L, Brophy RH, et al. Opioid Consumption After Knee Arthroscopy. J Bone Joint Surg Am. 2018;100(19):1629-1636. Stepan JG, Lovecchio FC, Premkumar A, et al. Development of an Institutional Opioid Prescriber Education Program and Opioid-Prescribing Guidelines: Impact on Prescribing Practices. J Bone Joint Surg Am. 2019;101(1):5-13. Methods: This prospective multicenter observational study enrolled 50 subjects undergoing outpatient knee arthroscopy for meniscal repair, meniscectomy, or ACLR. Opioid prescriptions, refills, and subject demographics were recorded. All patients followed the same perioperative, multimodal analgesic regimen (Table 1). Subjects were provided a pain journal to record visual analog scale (VAS) pain scores and opioid consumption for one week postoperatively. No changes were made to existing prescribing habits, postoperative physical rehabilitation, or surgical methodology. State databases were reviewed for additional opioid prescriptions. Results: Subjects, on average, consumed 2.5 opioid pills (range 0 to 14 pills) with a median consumption of 0.5 pills after knee arthroscopy. Eighty six percent of subjects (N = 43) consumed ≤ 5 opioid pills and 50% of subjects (N = 25) chose not to consume opioids postoperatively. Ninety two percent of subjects (N = 46) discontinued opioid consumption by the 3rd postoperative day. Subjects specifically undergoing ACLR (N = 18) consumed an average of 41 OME (Figure 1). Subjects consumed only 30% of opioids leaving 2,196 OME (approximately 293 oxycodone 5mg) available for possible distribution or misuse. Conclusion: This study demonstrates that current expert panels recommend an excess of opioids following knee arthroscopy. In contrast to these expert panel guidelines, we suggest a maximum of 5 and 15 oxycodone 5mg pills for knee arthroscopy and ACLR respectively. This evidence driven guideline will greatly assist orthopaedic surgeons in their effort to combat opioid overprescription. [Table: see text][Figure: see text]


2021 ◽  
Author(s):  
Miao He ◽  
Jie Li

Abstract Background Studies have shown a significant association between the radiographically measured lateral femoral condyle ratio (LFCR) and anterior cruciate ligament (ACL) injury. However, it is unclear whether the the LFCR measured by magnetic resonance imaging (MRI) is associated with risk of noncontact ACL injury. Objective 1 To investigate the effect of the LFCR on the risk of noncontact ACL injury by MRI. 2 To investigate the association of the LFCR measured by MRI with multiple bone morphological risk factors and evaluate the most sensitive risk predictors of noncontact ACL injury. Methods A total of 116 patients, including 58 subjects with noncontact ACL injury and 58 age-matched and sex-matched controls with only meniscus injury, were included in this retrospective case-control study. The LFCR, lateral tibial slope (LTS), lateral tibial height (LTH), medial tibial slope (MTS), and medial tibial depth (MTD) were measured on MRI. The differences in each index between the two groups were compared, and risk factors were screened by single-factor logistic regression analysis. Indicators with P values <0.1 were included in the logistic regression equation. The critical values and areas under the curve (AUCs) of independent risk factors were determined by receiver operating characteristic (ROC) curve analysis. Finally, the diagnostic performance of each risk factor was evaluated by the Z-test. Results A total of 116 patients who met the inclusion criteria were included in the final analysis (58 cases in the noncontact ACL injury group and 58 cases in the control group). Patients with noncontact ACL injury had a higher femoral LFCR (63.5±2.7%) than patients with simple meniscus tear. Among all the risk factors for ACL injury, the AUC for the LFCR was the largest, at 0.81 (95% CI, 0.73-0.88), and when the critical value was 61.35%, the sensitivity and specificity for the diagnosis of ACL injury were 79% and 67%, respectively. Combined with the LTH (> 2.35 mm), the diagnostic performance was improved. The AUC was 0.85 (95% CI, 0.78-0.92), the sensitivity was 0.83, and the specificity was 0.76 Conclusion This study shows that an increased LFCR is related to an increased risk of noncontact ACL injury by MRI. The LFCR and LTH are the most sensitive risk factors for noncontact ACL injury and may help clinicians identify individuals prone to ACL injury, allowing prevention and intervention measures to be applied.


2020 ◽  
Vol 2020 (4) ◽  
Author(s):  
Brandsma A S E Annemarie ◽  
Goedhart L M Louren ◽  
Van Raay J J A M Jos

Abstract An anterior cruciate ligament (ACL) rupture is a common injury. The ACL usually tears in its mid-substance, an avulsion fracture of the ACL mostly occurs at the tibial attachment. In few cases, an avulsion fracture occurs proximally from the ACL attachment to the lateral femoral condyle. This is a rare finding, especially in elderly patients. We report a case of an avulsion fracture of the ACL attachment to the lateral femoral condyle after a traumatic injury in a 60-year-old female. Injury was not recognized during initial assessment, but was later detected during knee arthroscopy because of persisting mechanical complaints with catching of the knee. This emphasizes the importance of a thorough physical examination and magnetic resonance imaging. As rare as this condition is, it is important for the orthopaedic surgeon in treating these patients to include femoral end avulsion injuries of the ACL in the differential diagnosis.


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