ABSTRACT
Objective:To compare the efficacy between metallic screw fixation and absorbable screw fixation after open reduction in the treatment of adolescent distal tibial epiphyseal fractures.Methods:A retrospective study was conducted to analyze the data of 82 patients with closed distal tibial epiphyseal fracture who had been admitted to Department of Pediatric Orthopedics, Shengjing Hospital Affiliated to China Medical University from January 2013 to December 2020. There were 61 males and 21 females (aged from 8 to 15 years), and 39 left sides and 43 right sides. The Salter-Harris classification: type Ⅱ in 25 cases, type Ⅲ in 8 cases, and type Ⅳ in 49 cases. They were divided into 2 groups according to different internal fixation methods. Group A (42 cases) was subjected to open reduction and metallic screw fixation and group B (40 cases) to open reduction and absorbable screw fixation. Preoperative data, operation time, total treatment cost and complications during follow-up were recorded and compared between the 2 groups. In both groups at the last follow-up, anteroposterior and lateral ankle radiographs were taken for radiographic evaluation of the injury to the distal tibial epiphysis and the American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score was used to assess the ankle function.Results:The 2 groups were comparable because there were no significant differences in all their preoperative demographic data ( P>0.05). Group A was followed up for 18.0(16.0, 21.3) months while group B for 16.0(13.0, 20.0) months. The treatment cost for group A [27, 000 (25, 000, 33, 000) Yuan] was significantly higher than that for group B [23, 000 (19, 000, 27, 000) Yuan] ( P<0.05). The operation time was (112.4±34.3) min for group A and (101.0±41.1) min for group B, showing no significant difference ( P>0.05). The lateral distal tibial angle was 89.5 (88.0, 91.0)° on the affected side and 89.7°±1.8° on the unaffected sides in group A; it was 90.0 (88.3, 90.8)° on the affected side and 89.5°±1.8° on the unaffected side in group B. The anterior distal tibial angle was 81.9°±1.8° on the affected side and 81.8°±1.5° on the unaffected side in group A; it was 82.0 (81.0, 83.0)° on the affected side and 82.1°±2.2° on the unaffected side in group B. There was no significant difference in the above comparisons at the last follow-up in radiographic evaluation of the distal ankle joint between the affected and the unaffected sides in either group or between groups( P>0.05). There was a significant difference between the 2 groups in the rate of superficial skin infection [11.9% (5/42) versus 0% (0/40)] ( P<0.05), but there was no significant difference in the incidence of premature physeal closure between the 2 groups [11.9% (5/42) versus 5.0% (2/40)] ( P>0.05). The last follow-up revealed no significant difference in the AOFAS ankle-hindfoot score between group A [(90.6±4.9) points] and group B [(92.1±4.6) points] ( P>0.05). Conclusions:In the treatment of adolescent distal tibial epiphyseal fractures, compared with metallic screw fixation, absorbable screw fixation may lead to comparable efficacy in fixation, functional recovery and imaging evaluation, but no increased risk of premature physeal closure. Moreover, it spares the need for secondary surgical removal, and reduces operation time and treatment cost.
ABSTRACT
Objective To investigate the clinical manifestations and surgical effectiveness of the primary retroperitoneal teratoma in infants.Methods The records of 36 patients were retrospectively reviewed who were diagnosed as primary retroperitoneal teratoma and treated at the Department of Pediatric Oncology,Guangzhou Women and Children's Medical Center between August 2015 and August 2017.The related data were collected,including gender,age,operation time,operational bleeding and tumor weight.All patients took the ultrasound,computed tomography (CT) before surgery,alpha-fetal protein (AFP) and human chorionic gonadotrophin(HCG) were detected during peri-operation period.All cases were classified into 0 to Ⅲ grades according to the Norris classification (27 patients of 0 grade,1 patient of Ⅰ grade,4 patients of Ⅱ grade,4 patients of Ⅲ grade).Results There were 9 males and 27 females in the study.All patients were treated surgically at the age of 11.4 months (7 days-7 years) on the average;the mean weight of incised tumor was 736.47 g (7.90-2 355.00 g);operation time was 2.88 hours (1.08-7.06 hours);the amount of bleeding during operation was 29.11 mL (2-150 mL).All patients received follow-ups for 6.56 months (9 days-23 months) on the average.Radiographs found that tumors in 25 patients (69.4％) were located in the left side of the abdominal cavity,and the rest of them were located in the right side.In addition,tumors in 30 patients (83.3 ％) were big enough to pass across the mid-line of the body.Average pre-operation AFP was 7 593.1 μg/L(1.7-80 000.0 μg/L),post-operation AFP was 1 339.5 μg/L(1.4-16 519.6 μg/L),and the difference was statistically significant (P =0.001);pre-operation AFP of the mature group was 5 439.6 μg/L(1.7-80 000.0 μg/L),post-operation AFP of the mature group was 1 130.6 μg/L(1.4-16 519.6 μg/L),and the difference was statistically significant (P =0.001);pre-operation AFP of the immature group [11 182.3 μg/L(17.4-80 000.0 μg/L)] was higher than that of the mature group,and the difference was statistically significant(P =0.006).On the final follow-up,AFP was mean 38.3 μg/L (1.4-352.4 μg/L);among them,AFP of the mature group was mean 14.3 μg/L (1.4-43.3 μg/L),the immature group was 78.4 μg/L(1.7-325.4 μ g/L),and the difference was statistically significant(P =0.028);AFP of 4 patients in the immature group who underwent chemotherapy was 54.9 μg/L (2.6-116.6 μg/L)on the average,lower than those of post-operation AFP of 265.2 μg/L (206.8-384.1 μg/L),and the difference was statistically significant (P =0.042).All patients were treated surgically,and 3 cases of them received laparoscope technique;no significant relationship was proved between time of surgery and the tumor weight,location,and Norris classification(all P ＞ 0.05).The incidence rate of the surgical complications was 42.1％,such as tumor rupture (6 patients),vascular injury (5 patients),digestive tract damage (4 patients) and incomplete incision (1 patient).There was no death case in the serials.Conclusions Primary retroperitoneal teratoma can be completely incised.However,the complications of surgery could appear in many cases.As a predictive index for the recurrence retroperitoneal teratoma,AFP can be diminished by chemotherapy following the surgery.