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Background  Chondroblastoma is a rare benign cartilaginous tumor, which primarily occurs in children and adolescents. Chondroblastoma commonly originates in the epiphyseal plate of long bones. An aggressive curettage treatment is recommended to manage lesion, which may jeopardize an open epiphyseal plate and result in limb shortening and deformity as the limb grows and develops. The purpose is to observe surgical effects of chondroblastoma on open epiphyseal plate of long bones in children and adolescents and explore influences on limb growth and development.    Methods  We retrospectively reviewed 18 cases of long bone chondroblastoma with open epiphyseal growth plate during March 2004 to October 2010 in our center. Seven females and 11 males with mean age of 11.6 ± 2.0 years old (8–15 years) were included. Patients, who suffered from trauma and pathological fracture of the epiphyseal plate or congenital diseases such as poliomyelitis, congenital dementia, and cartilage malnutrition, were excluded. All patients were treated with meticulous intralesional curettage and inactivity with alcohol followed by bone grafts. All cases were followed up 8.2 ± 1.7 years (5–11.5 years).    Results  All had no local recurrence and distance metastasis. The length of the affected limb was short, 18.47 ± 7.22 mm (1.5–30 mm). There was no obvious relativity with tumor activity ( P  = 0.061). Meanwhile, there were obvious relativity with the greatest dimension of the lesion (TGD) ( P  = 0.003), the vertical dimension between edge of lesion and epiphyseal line (TVD) ( P  = 0.010), and area ratio of lesion to local epiphysis (lesion/growth plate) ( P  = 0.015). The MSTS93 (Revised Musculoskeletal Tumor Society Rating Scale 93) and SF-36 (Medical Outcomes Study 36-Item Short-Form Health Survey) had been significantly improved ( P  < 0.01).    Conclusion  Managing of chondroblastoma located in open epiphyseal plate of a long bone with meticulous curettage, inactivity, and bone grafts can control tumor progression and recurrence effectively. Meanwhile, early detection and prompt surgical treatment intervention, which reduced significantly the tumor to influence limb growth and development, get encouraging limb function.    Trial registration  This is a retrospective study, which was not registered in any trial registry.

The effects of surgical treatment with chondroblastoma in children and adolescents in open epiphyseal plate of long bones