Yongqi Li , Yi Liao , Rui Luo , Tian Zhao , Shun Wang , Yunfeng Yang
{"title":"基于后踝相关韧带和踝关节稳定性的后踝骨折的分类和病理解剖","authors":"Yongqi Li , Yi Liao , Rui Luo , Tian Zhao , Shun Wang , Yunfeng Yang","doi":"10.1016/j.jot.2025.09.003","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div>The clinical significance of previous posterior malleolus fracture classifications is limited because they are mainly based on fracture morphology. On the basis of posterior malleolus-associated ligaments and ankle stability, injury mechanism, and fracture morphology, a novel posterior malleolus fracture classification system was proposed to clarify the pathoanatomy of posterior malleolus fracture and guide clinical diagnosis and treatment.</div></div><div><h3>Methods</h3><div>Twenty fresh frozen cadaver specimens of the lower limbs were collected, posterior malleolus-associated ligaments were dissected, and the range of their tibial insertion, average length, and direction were measured. Clinically,we retrospectively analyzed the imaging information of 296 patients with posterior malleolus fractures. Correlating the anatomical measurements of posterior malleolus-associated ligaments of fresh frozen cadaver specimens with the computed tomography(CT) imaging data of posterior malleolus fracture of clinical patients, a clinically practical classification system of posterior malleolus fracture was established. In addition, the novel classification was compared with Haraguci classification and Mason classification.</div></div><div><h3>Results</h3><div>Posterior malleolus-associated ligaments include the posterior inferior tibiofibular, inferior transverse tibiofibular, and posterior tibiotalar ligaments from the posterolateral to posteromedial tibia. A total of 296 posterior malleolus fractures were divided into three types. Type I posterior malleolus fracture involved only the tibial insertion of the inferior transverse tibiofibular ligament (36 cases, 12.2 %). Type Ⅱ posterior malleolus fracture involved the tibial insertions of the inferior transverse tibiofibular and posterior inferior tibiofibular ligaments and was divided into two subtypes according to whether or not articular cartilage or die-punch injury was present (ⅡA, 150 cases, 50.7 %; ⅡB, 79 cases, 26.7 %). Type Ⅲ posterior malleolus fracture involved all the tibial insertions of the inferior transverse tibiofibular, posterior inferior tibiofibular, and posterior tibiotalar ligaments and included two subtypes according to the fragment number of posterior malleolus fracture (ⅢA, 11 cases, 3.7 %; ⅢB, 20 cases, 6.8 %).</div></div><div><h3>Conclusions</h3><div>The formation of posterior malleolus fracture stems from the combined effects of external force and internal ligament structure. Correlating posterior malleolus-associated ligaments with the classification of posterior malleolus fracture is of great significance. The proposed classification system considers posterior malleolus-associated ligaments, injury mechanism, and fracture morphology and thus clarifies the pathoanatomy of posterior malleolus fracture and serves as a guide for clinical diagnosis and treatment.</div></div><div><h3>The translational potential of this article</h3><div>The clinical significance of previous posterior malleolus fracture classifications is limited because they are mainly based on fracture morphology. On the basis of posterior malleolus-associated ligaments and ankle stability, injury mechanism, and fracture morphology, a novel posterior malleolus fracture classification system in our study was proposed. The classification promoted better elucidation of the pathoanatomy of posterior malleolus fracture and guidance for clinical diagnosis and treatment.</div></div>","PeriodicalId":16636,"journal":{"name":"Journal of Orthopaedic Translation","volume":"55 ","pages":"Pages 339-345"},"PeriodicalIF":5.9000,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Classification and pathoanatomy of posterior malleolus fracture based on posterior malleolus-associated ligaments and ankle stability\",\"authors\":\"Yongqi Li , Yi Liao , Rui Luo , Tian Zhao , Shun Wang , Yunfeng Yang\",\"doi\":\"10.1016/j.jot.2025.09.003\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><div>The clinical significance of previous posterior malleolus fracture classifications is limited because they are mainly based on fracture morphology. On the basis of posterior malleolus-associated ligaments and ankle stability, injury mechanism, and fracture morphology, a novel posterior malleolus fracture classification system was proposed to clarify the pathoanatomy of posterior malleolus fracture and guide clinical diagnosis and treatment.</div></div><div><h3>Methods</h3><div>Twenty fresh frozen cadaver specimens of the lower limbs were collected, posterior malleolus-associated ligaments were dissected, and the range of their tibial insertion, average length, and direction were measured. Clinically,we retrospectively analyzed the imaging information of 296 patients with posterior malleolus fractures. Correlating the anatomical measurements of posterior malleolus-associated ligaments of fresh frozen cadaver specimens with the computed tomography(CT) imaging data of posterior malleolus fracture of clinical patients, a clinically practical classification system of posterior malleolus fracture was established. In addition, the novel classification was compared with Haraguci classification and Mason classification.</div></div><div><h3>Results</h3><div>Posterior malleolus-associated ligaments include the posterior inferior tibiofibular, inferior transverse tibiofibular, and posterior tibiotalar ligaments from the posterolateral to posteromedial tibia. A total of 296 posterior malleolus fractures were divided into three types. Type I posterior malleolus fracture involved only the tibial insertion of the inferior transverse tibiofibular ligament (36 cases, 12.2 %). Type Ⅱ posterior malleolus fracture involved the tibial insertions of the inferior transverse tibiofibular and posterior inferior tibiofibular ligaments and was divided into two subtypes according to whether or not articular cartilage or die-punch injury was present (ⅡA, 150 cases, 50.7 %; ⅡB, 79 cases, 26.7 %). Type Ⅲ posterior malleolus fracture involved all the tibial insertions of the inferior transverse tibiofibular, posterior inferior tibiofibular, and posterior tibiotalar ligaments and included two subtypes according to the fragment number of posterior malleolus fracture (ⅢA, 11 cases, 3.7 %; ⅢB, 20 cases, 6.8 %).</div></div><div><h3>Conclusions</h3><div>The formation of posterior malleolus fracture stems from the combined effects of external force and internal ligament structure. Correlating posterior malleolus-associated ligaments with the classification of posterior malleolus fracture is of great significance. The proposed classification system considers posterior malleolus-associated ligaments, injury mechanism, and fracture morphology and thus clarifies the pathoanatomy of posterior malleolus fracture and serves as a guide for clinical diagnosis and treatment.</div></div><div><h3>The translational potential of this article</h3><div>The clinical significance of previous posterior malleolus fracture classifications is limited because they are mainly based on fracture morphology. On the basis of posterior malleolus-associated ligaments and ankle stability, injury mechanism, and fracture morphology, a novel posterior malleolus fracture classification system in our study was proposed. The classification promoted better elucidation of the pathoanatomy of posterior malleolus fracture and guidance for clinical diagnosis and treatment.</div></div>\",\"PeriodicalId\":16636,\"journal\":{\"name\":\"Journal of Orthopaedic Translation\",\"volume\":\"55 \",\"pages\":\"Pages 339-345\"},\"PeriodicalIF\":5.9000,\"publicationDate\":\"2025-10-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Orthopaedic Translation\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2214031X25001494\",\"RegionNum\":1,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ORTHOPEDICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Orthopaedic Translation","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214031X25001494","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ORTHOPEDICS","Score":null,"Total":0}
Classification and pathoanatomy of posterior malleolus fracture based on posterior malleolus-associated ligaments and ankle stability
Background
The clinical significance of previous posterior malleolus fracture classifications is limited because they are mainly based on fracture morphology. On the basis of posterior malleolus-associated ligaments and ankle stability, injury mechanism, and fracture morphology, a novel posterior malleolus fracture classification system was proposed to clarify the pathoanatomy of posterior malleolus fracture and guide clinical diagnosis and treatment.
Methods
Twenty fresh frozen cadaver specimens of the lower limbs were collected, posterior malleolus-associated ligaments were dissected, and the range of their tibial insertion, average length, and direction were measured. Clinically,we retrospectively analyzed the imaging information of 296 patients with posterior malleolus fractures. Correlating the anatomical measurements of posterior malleolus-associated ligaments of fresh frozen cadaver specimens with the computed tomography(CT) imaging data of posterior malleolus fracture of clinical patients, a clinically practical classification system of posterior malleolus fracture was established. In addition, the novel classification was compared with Haraguci classification and Mason classification.
Results
Posterior malleolus-associated ligaments include the posterior inferior tibiofibular, inferior transverse tibiofibular, and posterior tibiotalar ligaments from the posterolateral to posteromedial tibia. A total of 296 posterior malleolus fractures were divided into three types. Type I posterior malleolus fracture involved only the tibial insertion of the inferior transverse tibiofibular ligament (36 cases, 12.2 %). Type Ⅱ posterior malleolus fracture involved the tibial insertions of the inferior transverse tibiofibular and posterior inferior tibiofibular ligaments and was divided into two subtypes according to whether or not articular cartilage or die-punch injury was present (ⅡA, 150 cases, 50.7 %; ⅡB, 79 cases, 26.7 %). Type Ⅲ posterior malleolus fracture involved all the tibial insertions of the inferior transverse tibiofibular, posterior inferior tibiofibular, and posterior tibiotalar ligaments and included two subtypes according to the fragment number of posterior malleolus fracture (ⅢA, 11 cases, 3.7 %; ⅢB, 20 cases, 6.8 %).
Conclusions
The formation of posterior malleolus fracture stems from the combined effects of external force and internal ligament structure. Correlating posterior malleolus-associated ligaments with the classification of posterior malleolus fracture is of great significance. The proposed classification system considers posterior malleolus-associated ligaments, injury mechanism, and fracture morphology and thus clarifies the pathoanatomy of posterior malleolus fracture and serves as a guide for clinical diagnosis and treatment.
The translational potential of this article
The clinical significance of previous posterior malleolus fracture classifications is limited because they are mainly based on fracture morphology. On the basis of posterior malleolus-associated ligaments and ankle stability, injury mechanism, and fracture morphology, a novel posterior malleolus fracture classification system in our study was proposed. The classification promoted better elucidation of the pathoanatomy of posterior malleolus fracture and guidance for clinical diagnosis and treatment.
期刊介绍:
The Journal of Orthopaedic Translation (JOT) is the official peer-reviewed, open access journal of the Chinese Speaking Orthopaedic Society (CSOS) and the International Chinese Musculoskeletal Research Society (ICMRS). It is published quarterly, in January, April, July and October, by Elsevier.