ArticleBMC musculoskeletal disorders2023
Lateral classification system predicts the collapse of JIC type C1 nontraumatic osteonecrosis of the femoral head: a retrospective study.
Article in BMC musculoskeletal disorders, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 5 citations in OpenAlex.
- [Finite element analysis of CT-based lateral classification of Japanese Investigation Committee type C1 osteonecrosis of femoral head and its prognostic value].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2026Article
- Effects of crutch-assisted walking on pain, gait, and hip function in early and middle-stage osteonecrosis: a randomized trial.Journal of orthopaedic translation · 2026Article
- Which trajectory should we choose? - Defining safe entry-target pathways and underlying femoral morphology for bone marrow injection in osteonecrosis of the femoral head.Regenerative therapy · 2026Article
- Relationship between anterior or posterior femoral head necrosis and collapse based on MRI-defined key necrotic layer sets.Journal of orthopaedic surgery and research · 2025Article
- Location or size? A finite element analysis study of necrotic lesion impact on femoral head collapse.Journal of orthopaedic surgery and research · 2025Article
- Factors influencing the survival status of the hip joint in post-collapse femoral head necrosis.Journal of orthopaedic surgery and research · 2024Article
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9 authors at 3 institutions in 1 country.
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Abstract
purposesThe aim of this study was to construct a lateral classification system for nontraumatic osteonecrosis of femoral head (NONFH) through three-dimensional reconstruction of the necrotic area to assist in evaluating the prognosis of patients with JIC type C1.
methodsRetrospective analysis of patients with JIC type C1 NONFH from January 2018 to December 2020. All patients were followed up for more than 3.5 years. The patients were divided into collapse group and non-collapse group according to whether the femoral head collapsed during the follow-up.Lateral classification system for femoral head necrosis is constructed through three-dimensional reconstruction of the necrotic area.Comparison of lateral classification system,midsagittal necrosis angle(MNA)and general data between the two groups.Furthermore, ROC curve analysis and survival analysis were performed.
results318 patients were included in this study.There was a significant difference between the two groups in the lateral classification system (P < 0.05). In addition, the MNA in the collapsed group was significantly greater than that in the non-collapse group(P < 0.05). As revealed by the results of ROC analysis, the cutoff point of MNA was 104.5° (P < 0.05).According to the survivorship analysis, the mean survival time of the hips of patients with MNA less than 104.5°was greater than that of patients with MNA over 104.5° (P < 0.05). The survival rates of 3.5 years femoral head were 45.8%, 33.7%, 14.8%, 93.0%, and 100% for lateral classification system 1, 2, 3, 4, and 5, respectively.
conclusionNecrosis involving the anterior aspect of the femoral head is an important risk factor for collapse. The Lateral classification system can effectively predict the femoral head collapse in JIC C1 type NONFH patients, supplementing the deficiency of JIC classification in evaluating the front of the femoral head.
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