| Registry | NCT07481929, acronym fracture |
|---|---|
| Status | Completed |
| Study type | Observational |
| Enrollment | 77 (Actual) |
| Sponsor | Second Affiliated Hospital of Soochow University (Other) |
| Conditions | Tibial Plateau Fracture |
| Interventions | Is it dislocation? (Behavioral) |
| Dates | start 2019-01-01, primary completion 2025-01-01, completion 2025-01-01, first posted 2026-03-19, last updated 2026-03-19 |
| Locations | 1 site in China |
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All trials for Tibial Plateau Fracture All trials of Is it dislocation?
This retrospective observational case-control study aims to evaluate imaging features and associated soft-tissue injury patterns in patients with Schatzker type IV tibial plateau fractures. Adult patients treated surgically at a single tertiary trauma center between January 2019 and December 2025 are included if complete preoperative radiographs, computed tomography (CT), and magnetic resonance imaging (MRI) are available. Participants are categorized into fracture-dislocation and non-dislocation groups based on preoperative imaging findings. The study evaluates morphological characteristics of the lateral and posterolateral tibial plateau on CT as well as associated soft-tissue injuries on MRI, including ligamentous, meniscal, and bone contusion patterns. The objective of the study is to characterize imaging features associated with fracture-dislocation and to explore relationships between osseous injury morphology and soft-tissue injury patterns in Schatzker type IV tibial plateau fractures.
This single-center retrospective observational case-control study evaluates imaging characteristics and associated soft-tissue injury patterns in patients with Schatzker type IV tibial plateau fractures. The study population consists of adult patients who underwent surgical treatment at a tertiary trauma center between January 2019 and December 2025.
Eligible participants are identified through review of medical records and imaging archives. Inclusion criteria include age between 18 and 70 years and availability of complete preoperative imaging, including radiographs, CT scans, and MRI examinations. Exclusion criteria include fractures other than Schatzker type IV, prior surgery of the affected knee, pathologic fractures, advanced osteoarthritis, and incomplete or poor-quality imaging data.
Participants are categorized into fracture-dislocation and non-dislocation groups according to predefined imaging criteria based on CT and MRI findings. The study assesses quantitative imaging parameters describing tibial plateau morphology, including measurements of posterolateral plateau depression and lateral plateau widening. MRI is used to evaluate associated soft-tissue injuries, including injuries of the lateral meniscus, anterior cruciate ligament, posterior cruciate ligament, lateral collateral ligament, posterolateral corner structures, and bone contusions.
The purpose of this study is to evaluate imaging characteristics associated with fracture-dislocation and to investigate the relationship between tibial plateau fracture morphology and concomitant soft-tissue injuries. No study intervention is assigned, and all data are derived from retrospective review of existing clinical and imaging records obtained during routine clinical care.
| Arm | Type | Interventions | Description |
|---|---|---|---|
| fracture dislocations | Behavioral: Is it dislocation? | Fracture-dislocation (including subluxation) was defined only when there was clear tibiofemoral malalignment or incongruity on preoperative imaging, including lateral tibiofemoral subluxation or dislocation on coronal CT and three-dimensional reconstruction, characterized by complete or partial loss of normal alignment between the lateral tibial plateau and the corresponding femoral condyle. MRI findings, were used as supportive evidence, including lateral translation of the lateral tibial plateau with associated compression, deformation, or abnormal course of the lateral collateral ligament | |
| non fracture dislocations | Fracture displacement alone, without clear tibiofemoral malalignment was not considered sufficient for classification as fracture-dislocation. |
Sex: All, ages: 18 Years to 70 Years
Inclusion Criteria: * Adults aged 18 to 70 years Surgically treated Schatzker type IV tibial plateau fracture Wahlquist type B or C fracture confirmed on CT Availability of complete preoperative radiographs, CT, and MRI Exclusion Criteria: * Fractures other than Schatzker type IV Wahlquist type A fractures Ipsilateral distal femoral, tibial shaft, or ankle fractures Previous surgery of the ipsilateral knee Advanced osteoarthritis (Kellgren-Lawrence grade > 3) Pathologic fractures Missing key clinical data Incomplete or poor-quality imaging precluding accurate measurement
| Facility | City | Country | Status |
|---|---|---|---|
| The medical record system and imaging system of the Second Affiliated Hospital of Soochow University | Schoow, Jiangsu | China |