Patients with trochlear dysplasia have dysplastic medial femoral epiphyseal plates

Author:

Kong Lingce1,Kang Huijun1,Niu Yingzhen1,Hao Kuo1,Fan Chongyi1,Wang Fei1ORCID

Affiliation:

1. Department of Orthopaedic Surgery Third Hospital of Hebei Medical University 050051 Shijiazhuang Hebei China

Abstract

AbstractPurposeTo investigate the growth of the epiphyseal plate in patients with trochlea dysplasia using a 3D computed tomography (CT)‐based reconstruction of the bony structure of the distal femur. The epiphysis plate was divided into a medial part and a lateral part to compare their differences in patients with trochlear dysplasia.MethodsThis retrospective study included 50 patients with trochlea dysplasia in the study group and 50 age‐ and sex‐matched patients in the control group. Based on the CT images, MIMICS was used to reconstruct the bony structure of the distal femur. Measurements included the surface area and volume of the growth plate (both medial and lateral), the surface area and capacity of the proximal trochlea, trochlea‐physis distance (TPD) (both medial and lateral), and height of the medial and lateral condyle.ResultsThe surface area of the medial epiphyseal plate (1339.8 ± 202.4 mm2 vs. 1596.6 ± 171.8 mm2), medial TPD (4.9 ± 2.8 mm vs. 10.6 ± 3.0 mm), height of the medial condyle (1.1 ± 2.5 mm vs. 4.9 ± 1.3 mm), and capacity of the proximal trochlear groove (821.7 ± 230.9 mm3 vs. 1520.0 ± 498.0 mm3) was significantly smaller in the study group than in the control group. A significant positive correlation was found among the area of the medial epiphyseal plate, the medial TPD, the height of the medial condyle and the capacity of the proximal trochlear groove (r = 0.502–0.638).ConclusionThe medial epiphyseal plate was dysplastic in patients with trochlea dysplasia. There is a significant positive correlation between the surface area of the medial epiphyseal plate, medial TPD, height of the medial condyle and capacity of the proximal trochlear groove, which can be used to evaluate the developmental stage of the trochlea in clinical practice and to guide targeted treatment of trochlear dysplasia.Level of evidenceIII.

Funder

Natural Science Foundation of Hebei Province

Hebei province project for overseas-educated scholars

Publisher

Wiley

Subject

Orthopedics and Sports Medicine,Surgery

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