Biomechanic study of posterior tibial anatomic plate in the treatment of posterior tibial plateau fracture / 中华创伤杂志

Objective To investigate the biomechanical properties of the posterior tibial anatomic plate. Methods A total of 25 fresh frozen adult tibial top and matching femur specimens were randomly divided into four groups. One specimen was used as normal control ( N group), and the remaining 24specimens were with Schatzker Ⅵ tibial plateau fracture and accompanied by rear split and backward fracture displacement. The lateral margin of the tibia was fixed with a L-type plate, and the medial margin was fixed with the same plate after remodeling. The 24 specimens were divided into three groups, eight specimens per group. The posterior margin of the tibia was fixed by posterior tibial anatomic plate ( Group A), T-type plate ( Group B) or straight reconstruction plate ( Group C). The strength, stiffness, torsional biomechanics and failure load performance of the plates in each group were evaluated. Results The strength and stiffness of test groups was superior to that of Group N ( P ＞ 0.05 ), and the torsional biomechanics of test groups was close to that of Group N ( P ＞ 0.05 ). The posterior tibial anatomic plate was superior to T-type plate and straight reconstruction plate in aspects of strength, stiffness, torsional biomechanics and failure load performance ( P ＜ 0.05 ). Conclusions Posterior tibial anatomic plate has excellent biomechanical properties, and it is superior to other materials in treating posterior tibial plateau fracture and restoring the stability of the knee.

The Use of Calcaneal Anatomic Plate in Arthroscopically-assisted Open Reduction and Internal Fixation of Intra-articular Calcaneal Fractures / 华中科技大学学报（医学）（英德文版）

To discuss and evaluate the method and effect of using calcaneal anatomic plate in treatment of intra-articular fractures of the calcaneus with assistant of arthroscope, 86 intra-articular fractures of the calcaneus in 78 patients were reduced by open reduction, and rigid fixation was made with calcaneal anatomic plate under assistant of arthroscope. The average follow-up duration was 18 months (range 12-30 months). The effect of treatment was evaluated according to AOFAS and X-ray before and after operation. The results showed that 86 patients have obtained satisfactory reduction according to X-ray, and there was significant difference before and after operation (P＜0.01), the total excellent and fine rate was 91.86 %. Treating intra-articular fractures of the calcaneus with calcaneal anatomic plate under arthroscope may provide more chance to achieve anatomical reconstruction, which can lead to satisfied recovery of function and few complication.

Tibial plateau fractures treated by internal fixation with bioglue compound and anatomic plate / 中华创伤骨科杂志

Objective To investigate the clinical effects of bioglue compound and anatomic plate in treatment of tibial plateau fractures. Methods 28 cases of tibial plateau fractures were treated by means of open reduction and internal fixation with bioglue compound and anatomic plate. The intervals between operation and injury ranged from 5 to 10 days. The amounts of bioglue compound implanted ranged from 3 to 8 grams. Results All the patients were followed up for 6 to 22 months. All the fractures healed satisfactorily without sunken joint surface. According to Mechant criteria, the result was excellent in 13 cases, good in 11 cases, moderate in 3 cases and poor in 1 case. The total excellent and good rate was 85.3 %. Conclusion Internal fixation with bioglue compound and anatomic plate can result in good effects in treatment of tibial plateau fractures, because the bioglue compound possesses high bone inductive potentialities to repair bone defects.

Internal fixation with anatomic plate in treatment of intra - articular calcaneal fractures / 中华创伤骨科杂志

Objective To evaluate the effect of internal fixation with anatomic plate in treatment of in-tra-articular calcaneal fractures with different hone grafting methods.Methods 40 fractures in 37 patients with intra-articular calcancai fractures were given internal fixation with anatomic plate.Ilium grafting was done in type II and ID (Sanders' classification) cases,and reconstruction of articular surface using iliac crest with periosteum in type VI cases.The foot functions of the patients were evaluated according to Maryland Foot Scoro.Results In the 28 fractures who were followed up for 6 to 48 months,excellent results were obtained in 13(46.4% ),good in 14 (50% ),fair in 1 (3.6% ),with the excellent and good rate being 96.4%.Conclusion Being able to effectively support the articular surface of calcaneus,the anatomic plate is a fine internal fixation device for calcancai fractures,and grafting using iliac crest with periosteum is an effective method to repair defects of the articular surface.