scholarly journals The Relationship between the Injury Mechanism and the Incidence of ACL Avulsions in Schatzker Type IV Tibial Plateau Fractures: A 3D Quantitative Analysis Based on Mimics Software

Author(s):  
Zihao Liu ◽  
Shuai Wang ◽  
Xiaochen Tian ◽  
Aqin Peng

Abstract Introduction Tibial plateau fractures are often accompanied with ligamental and meniscal injuries. Among which, the combined existence of Schatzker type IV fracture with anterior cruciate ligament (ACL) avulsion has been reported rarely. The purpose of this study was to determine the injury mechanism of Schatzker type IV fracture with ACL avulsion based on Mimics software. Methods Ninety-nine Schatzker type IV tibial plateau fractures were retrospectively analyzed by quantitative three-dimensional measurements. ACL avulsions were diagnosed through the data of computed tomography and magnetic resonance imaging. We simulated the knee posture when an injury occurred and defined different injury patterns. The chi-square test was used for determining the main mechanism which causes Schatzker type IV fractures associated with ACL avulsions. Results There were more ACL avulsions and more displaced ACL avulsions associated with the knee in flexion in the setting of Schatzker type IV fracture (p < 0.05). More ACL avulsions were found in the injury pattern of flexion-valgus than the other injury patterns of the same level (p < 0.05). The rotation of the tibial showed no significant difference in producing ACL avulsion fractures. Conclusion This study found that a flexed knee at the occurrence of a Schatzker type IV tibial plateau fracture is a high-risk factor for causing associated ACL avulsion and producing more displaced avulsions. Flexion-valgus pattern was the main cause of Schatzker type IV fractures associated with ACL avulsions. The findings will help orthopedists understand the injury mechanism and enhance their awareness of such injuries to avoid unfavorable prognosis.

2020 ◽  
Author(s):  
Yilun Yao ◽  
Xiaoshu Wu ◽  
Lei Wu ◽  
Lei Yang ◽  
Chunzhi Jiang ◽  
...  

Abstract Background To explore the association between the classification for tibial plateau fractures (TPF) and the popliteal artery injury (PAI).Methods 22 TPF patients accompanied by PAI who were treated from May 2012 to July 2019 were retrospectively analyzed. There were 19 males and 3 females with an average age of 49.43 years. The Schatzker classification and three-column classification were performed for TPF. The severity of extremity injury was evaluated using the mangled extremity severity score (MESS). Except 3 patients treated with amputation, the remaining patients underwent surgical repair of popliteal artery and fracture external fixation. The outcome was evaluated using the Rasmussen score for tibial head fractures.Results There were 10 cases of Schatzker type IV fractures, 1 case of type V fractures and 11 cases of type VI fractures. Based on the three-column classification, the posterior column was involved in 22 cases, 2 columns in 15 cases and 3 columns in 6 cases. The MESS was 6-10 points, with an average of 7.59 points. Except 1 case directly receiving amputation, 3 cases of segment P1 injury was observed via preoperative DSA + intraoperative exploration, while segment P2 in 6 cases and segment P3 in 12 cases. Popliteal artery was found completely ruptured in 11 cases, partially ruptured in 1 case, and severely contused with thrombosis in 10 cases. The Rasmussen score was given to 19 patients at the last follow-up, except for the cases undergoing amputation. The outcome was satisfied in 14 cases, unsatisfied in 5 cases.Conclusion: In patients with complex TPF, the risk of PAI becomes higher with the increase of Schatzker classification level. Knee CT scan is helpful in determining the severity of fractures and evaluating PAI. Based on the three-column classification, PAI should be suspected when the fractures involve the medial and posterior column.PAI is mainly in the segment P3, and artery rupture or severe contusion with extensive thrombosis may occur.


2020 ◽  
Author(s):  
Jun Zhang ◽  
Bo Yin ◽  
Jianmin Zhao ◽  
Yihan Li ◽  
Peng Yin ◽  
...  

Abstract Objective The objective of this study to evaluate prospectively the effectiveness of Schatzker type IV tibial plateau fractures involving posteromedial plane managed by combined lateral peripatellar and posteromedial approaches Materials and methods We analyzed 18 patients with Schatzker type IV tibial plateau fractures involving posteromedial plane. There were 12 males and 6 females with an average of 38.5 years (range, 25-60 years). The mechanism of injury included traffic accident in 15 patients and falling in 3 patients. The injured lower limbs were right in 11 patients and left in 7 patients. The mean time from injury to surgery was 6.78 days (range, 5-9 days). There were 8 patients with meniscus injuries in our study. Results The mean operation time was 3.41 hours (range, 3-4 hours). The mean blood loss was 352.78 ml (range, 300-410 ml). All the injured meniscuses were repaired. All patients were followed up, and the average time of follow up was 16.61 months (range, 14-22 months). Bone union was achieved at a mean of 12 weeks (range, 10-14 weeks). The mean degree of knee extension was 1.11° (range, 0-5°), and the mean degree of knee flexion was 120.56°(range, 110-130°). The mean points of KSS were 83 (range, 74-89 points). According to the criteria of KSS, 14 patients had clinical outcomes rated as excellent and 4 patients were rated as good. Conclusion Our results suggested that Combined lateral peripatellar and posteromedial approaches in the treatment of Schatzker type IV tibial plateau fractures involving posteromedial plane acquired satisfying outcomes. It was good for repairing the injured meniscus through our approaches.


Orthopedics ◽  
2014 ◽  
Vol 37 (8) ◽  
pp. e699-e706 ◽  
Author(s):  
Shi-Min Chang ◽  
Ying-Qi Zhang ◽  
Meng-Wei Yao ◽  
Shou-Chao Du ◽  
Qing Li ◽  
...  

2020 ◽  
Author(s):  
Yilun Yao ◽  
Xiaoshu Wu ◽  
Lei Wu ◽  
Lei Yang ◽  
Chunzhi Jiang ◽  
...  

Abstract Objective To explore the association between the classification for tibial plateau fractures (TPF) and the popliteal artery injury (PAI).Methods 22 TPF patients accompanied by PAI who were treated from May 2012 to July 2019 were retrospectively analyzed. There were 19 males and 3 females with an average age of 49.43 years. The Schatzker classification and three-column classification were performed for TPF. The severity of extremity injury was evaluated using the mangled extremity severity score (MESS). Except 3 patients treated with amputation, the remaining patients underwent surgical repair of popliteal artery and fracture external fixation. The efficacy was evaluated using the Rasmussen score for tibial head fractures.Results There were 10 cases of Schatzker type IV fractures, 1 case of type V fractures and 11 cases of type VI fractures. Based on the three-column classification, the posterior column was involved in 22 cases, 2 columns in 15 cases and 3 columns in 6 cases. The MESS was 6-10 points, with an average of 7.59 points. Except 1 case directly receiving amputation, 3 cases of segment P1 injury was observed via preoperative DSA + intraoperative exploration, while segment P2 in 6 cases and segment P3 in 12 cases. Popliteal artery was found completely ruptured in 11 cases, partially ruptured in 1 case, and severely contused with thrombosis in 10 cases. The Rasmussen score was given to 19 patients at the last follow-up,except for the cases undergoing amputation. The efficacy was excellent in 8 cases, good in 7 cases, moderate in 3 cases and poor in 1 case.Conclusion: In patients with complex TPF, the risk of PAI becomes higher with the increase of Schatzker classification level. Knee CT scan is helpful in determining the severity of fractures and evaluating PAI. Based on the three-column classification, PAI should be suspected when the fractures involve the medial and posterior column.PAI is mainly in the segment P3, and artery rupture or severe contusion with extensive thrombosis may occur.The postoperative knee function of patients with complex TPF can be well restored by early active surgical repair of popliteal artery.


2021 ◽  
pp. 33-35
Author(s):  
Mayank Poddar ◽  
Abhinav Sinha ◽  
Amit Narang

Background: Tibial plateau fractures resulting from high energy trauma, typically Schatzker type IV, V and VI pattern fractures are difcult to deal with due to poor overlying soft tissue cover. Ligamentotaxis with ilizarov ring xator can be a suitable denitive treatment option for such injuries with fewer associated complications as compared to internal xation. Patients and Methods: 30 patients within the age group of 18-80 years with Schatzker type IV, V and VI pattern injuries were included in the study. A four ring ilizarov assembly was used with knee spanning with a proximal femoral ring. The patients were followed for 12 months and evaluation was analyzed as per Rasmussen clinical and radiological criteria. Results: The mean age of patients in our study was 39.76 years. Twenty cases were Schatzker type VI, 7 cases were Schatzker type IV (with extensive soft tissue swelling following high velocity trauma) and only 3 cases were type V. The mean duration of surgery was 47±12 mins without bone grafting and 72±14 mins with bone grafting. The mean interval from injury to surgery was 2.36 days (range 1-5 days). Rasmussen total anatomical outcome was excellent in 14 patients(46.66%) and good in 16 patients(53.33%). Rasmussen total functional outcome was excellent in 21 patients(70%) and good in 9 patients(30%). Final Outcome was excellent in 22 patients(73.33%) and good in 8 patient(26.66%). Discussion: High velocity tibial plateau fractures, when treated with internal xation and plating, carry a higher risk of associated complications ranging from deep infections to even compartment syndrome. The rate of re-operation following internal xation in such injuries has been high with most of the re-surgeries being required within one year of primary xation which adds to the morbidity of the patient. Ligamentotaxis with ilizarov ring xation as denitive treatment in such cases can be a fruitful operation with lesser complications and early return to previous level of activity.


2007 ◽  
Vol 6 (1) ◽  
pp. 17-28 ◽  
Author(s):  
Mark L. Purnell ◽  
Andrew I. Larson ◽  
Kent A. Schnetzler ◽  
N. Lindsay Harris ◽  
Tomas Pevny

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