Purpose Posterior malleolar fractures after intramedullary nail surgery rarely occur in distal tibia shaft fractures. The importance of preoperative ankle evaluation in preventing these fractures is also common knowledge. There are no studies in the literature on posterior malleolar fractures in distal onethird tibia shaft fractures except for distal metaphyseal tibia fractures to the best of our knowledge. The purpose of this study was to evaluate the incidence and radiological features of posterior malleolar fractures in distal one-third tibia shaft fractures with proximal fibula fractures. Materials and Methods Thirty-one patients diagnosed with distal one-third tibia shaft fractures with proximal fibula fractures from January 2016 to May 2021 were retrospectively reviewed. With the aid of plain radiographs and computed tomography (CT) scans, the fracture patterns of the tibia and fibula were classified according to the AO Foundation/Orthopedic Trauma Association (AO/OTA) classification, and posterior malleolar fractures were identified. The fracture pattern was classified according to the Haraguchi classification, and the angle between the bimalleolar axis and the posterior malleolar fracture line was measured when there was a posterior malleolar fracture. Results Out of the 31 distal one-third tibia shaft fractures with proximal fibula fractures, 16 cases (51.6%) had noncontiguous posterior malleolar fractures that were confirmed on a CT scan, while 3 cases (18.8%) were visible on initial plain radiographs. There was no statistically significant variation seen in the presence of a posterior malleolar fracture in the tibia (p=0.15) and fibula (p=0.87) fractures.
According to the Haraguchi classification, there were 15 posterolateral-oblique fractures (Type I) and 1 medial-extension fracture (Type II), and the mean angle was 24.5°. Conclusion Noncontiguous posterior malleolar fractures occurred in approximately half of the distal one-third tibia shaft fractures with proximal fibula fractures, and a CT scan was considered necessary to diagnose posterior malleolar fractures before surgery
PURPOSE To investigate the effect of fibular malreduction on ankle joint after tibia interlocking IM nailing of tibial and fibular fractures according to type of fibular fractures at preoperation. MATERIALS AND METHODS Thirty-nine patients who had ipsilateral tibiofibular fracture were analyzed clinically and radiographically. The talocrural angle and the distance from joint line to the tip of fibular were measured on both ankle standing AP view. The difference of angle and distance of both ankle were analyzed by paired t-test and correlation between defference and AOFAS score by Spearman correlation coefficients. RESULTS The difference of The talocrural angle and the distance from joint line to the tip of fibular of both ankle was statistically significant (p<0.05). The correlation between this difference and AOFAS score was statistically insignificant (p>0.05). CONCLUSION In tibia interlocking IM nailing of tibia and fibula fracture, malreduction of fibula could cause the change of ankle joint.
Citations
Citations to this article as recorded by
The Risk Factors Associated with Nonunion after Surgical Treatment for Distal Fibular Fractures Jun Young Lee, Kwi Youn Choi, Sinwook Kang, Kang Yeol Ko Journal of Korean Foot and Ankle Society.2018; 22(3): 95. CrossRef