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Objective:To evaluate the efficacy of 3D printed patients-specific guide plates in assisting Ilizarov bone transport in the treatment of tibial bone defects.Methods:A retrospective study was conducted to analyze the clinical data of 24 patients with tibial bone defects who had been admitted to Institute of Trauma Orthopedics, The 80th Army Group Hospital of PLA from January 2018 to March 2022. There were 9 males and 15 females with an age of (49.8±6.5) years, and 4 upper tibial defects, 5 middle tibial defects, and 15 lower tibial defects. According to the methods of repairing bone defects, the patients were divided into 2 groups: a 3D printing group of 10 cases where a 3D printed patient-specific guide plate was used to assist Ilizarov bone transport in the treatment of tibial bone defects, and a traditional group of 14 cases where Ilizarov bone transport was performed in a traditional manner. The 2 groups were compared in terms of operation time, frequency of intraoperative fluoroscopy, axial angulation of the tibia at postoperation and the last follow-up, external fixation time (EFT) and external fixation index (EFI). At the last follow-up, healing of bone defects was evaluated according to the criteria of The Association for the Study and Application of the Method of Ilizarov (ASAMI), functional outcomes were evaluated according to the Paley criteria, and needle infection was recorded according to the Paley classification for complications.Results:There was no statistically significant difference in the preoperative general data between the 2 groups, indicating comparability ( P>0.05). All patients were followed up for (11.3±2.0) months on average after operation. The 3D printing group had significantly shorter operation time [(19.9±2.6) min] and significantly lower frequency of intraoperative fluoroscopy [(3.0±0.8) times] than the traditional group [(38.1±2.2) min and (8.9±1.3) times] (P<0.05), and had significantly better axial angulation of the tibia at postoperation and the last follow-up than the traditional group ( P<0.05). There was no significant difference in EFT or EFI between the 2 groups ( P>0.05), and the last follow-up revealed no significant difference either in bone healing, functional outcomes, or needle infection between the 2 groups ( P>0.05). Conclusion:In the treatment of tibial bone defects, compared with conventional Ilizarov bone transport, the Ilizarov bone transport assisted by a 3D printed patient-specific guide plate demonstrates advantages of shorter operation time, lower intraoperative fluoroscopy, and higher reduction accuracy.
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Objective:To investigate the clinical effect of thoracoumbilical flap combined with random abdominal flap in repair of large-area soft tissue defects of calf in children.Methods:The clinical data of 16 children with large-area soft tissue defects of calf treated with thoracoumbilical flap combined with abdominal random flap from January 2004 to December 2007 in PLA Trauma Orthopaedic Research Institute, 80th Group Military Hospital of the PLA were retrospectively analysed. There were 7 boys and 9 girls aged 8 to 14(11.3 in average) years old. Six cases were crushed by heavy objects, 6 crushed by wheels, 3 by thermal press and 1 by machine strangulation. After thorough debridement, the wound area ranged from 16.0 cm×9.0 cm to 38.0 cm×15.0 cm. Four cases were treated after 3-10 hours of injury by emergency surgery. Twelve cases received surgeries 0-11 days after hospital admission and wound being stabilised. Doppler ultrasound was used to locate the perforating vessels according to the location, size and shape of the wound. Thoracoumbilical flap combined with abdominal random flap were designed and harvested to repair the wound. The sizes of flaps were 18.0 cm×11.0 cm-40.0 cm×16.0 cm. All patients entered follow-up at the outpatient clinic or through WeChat interviews. The appearance, texture of the flap and limb recovery were checked and recorded.Results:After surgery, all of 16 flaps survived, of which 12 flaps had phase-one healing, 3 flaps had small area of necrosis at the edge, which healed after repeated dressing changes and 1 flap developed vascular comproise, and survived after surgical exploration. The donor sites healed in phase-one. All 16 children had 6 months to16 years of follow-up, with an average of 20.7 months. The colour of the flaps was normal with soft texture. The motor function of calf was satisfactory. According to Punor functional evaluation criteria, 12 cases were in excellent and 4 in good.Conclusion:The thoracoumbilical flap combined with abdominal random flap features a reasonable design, strong blood supply and repair of a large area. It is a reliable method for repairing large area soft tissue defects in the calf of children.
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Objective To explore the value of a set of combined vascular anastomosed flap.Methods The 36 cases were injured,the site of injury in knee and leg or ankle and foot,upper limb.Skin defect with bone and joint,tendon exposure.Selection of anastomosis of blood vessel with large flap,wherein the subscapular vascular anastomosis scapular-lateral thoracic flap in 7 cases,the maximum was 70 cm × 10 cm; anastomosis of subscapular artery lateral thoracic-latissimus dorsi muscle flap in 9 cases,the maximum was 42 cm× 24 cm.Anastomosis of subscapular artery of the scapular-back the latissimus dorsi muscle flap in 2 cases; anastomotic lateral circumflex femoral vessels with lateral femoral cutaneous nerve thigh anterior medial-tensor fascia latae flap in 8 cases; anastomosis of anterior tibial artery and the superficial peroneal nerve in the anterior ankle-dorsal foot flap in 5 cases; anastomosis of dorsal vessels and superficial peroneal nerve of the extensor digitorum brevis muscle-dorsal foot joint flap in 5 cases.Results Following up 8 months to 25 years,twenty-three cases were 19 years.All flaps survived and all the wounds were covered,infection were cured,the skin have aesthesia,fracture healing.Five cases were performed muscle tendon and arthrosis solution for creating conditions for the functional recovery of limb.Conclusion Anastomosis of blood vessel anastomosis combined flap can replace multiple vascular flaps combination,saving,convenient,high success rate,widen the indications.
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Objective To investigate the technique of design and cutting method of the thoraco- um-bilicus flap.Methods (1) Made the skin flap include not only the vascularity skin of this side,but also the opposite side,to repair overlength and overbreadth wound surface.(2) Improvement of skin flap cutting steps:first to find the blood vessel under the lower abdominal wall,then to cut the skin flap,if not find to have another donor area.(3)Technology of making thin skin flap:when cutting open the skin,made the surgical blade inclined to the flap,beveling to 2/3 of the skin flap length and in hypogastrium cutting to all over the flap with the fat keep stay in the abdomen so to make the skin flap thiner.Results There was 1 case necrosis because of infection in all 54 cases be repaired.The achievement ratio was 98.1％.Follow up with 1-5 years,skin flaps appearance was good,joint extend- bend was gratification.Soft tissue infection was cured.Conclusion Modified technology of thoraco-umbilicus flap is reasonable design and easily to cut,and the achievement ratio is higher.
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Deregulation of cell cycle is one of important mechanisms leading to breast cancer. It has been revealed that cyclin E and p27 are the most important regulatory factor for cell cycle control and a better marker for evaluating prognosis of breast cancer compared to other biological markers.
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[Objective] To approach the methods of emergency microsurgery repair and one stage functional restoration in tretment of severe tissue defect of the hand.[Method]Fifteen cases of large skin compounded defects of thumb,'hukou',back of hand and palm were repaired with second toes along with anterior malleolus flap,and extend flap of dorsum of foot.Two hundreds and fifty-two cases of compounded defects of 'hukou',back of hand palm and forearm were repaired with second toes or big nail skin flap along with flap transplantation and thumb reconstruction.Thoracoumbilical flap was used in other 372 cases with bone and muscle defect or the big skin defect of the forearm.The lateral thoracic flap and scapular flap was used in repair of 18 cases of the avulsion of the hand.The lateal thoracic flap covered the raw surface of the back hand,the scapular flap covered the raw surface of the palm,so as to completely wrap up the hand or the hand complic forearm.[Result]Seven cases were found vessel crisis in the free skin flap and tissue flap,they all survived after surgical exploration and reanastomosis of blood vessel.One stage healing was gained in 619 cases,two stage healing was gained in 38 cases.All cases were followed up for 1~15 years.According to the criteria of upper limb of C.M.A hand surgery institute,there were excerllent in 340 cases,good in 228 cases,fair in 65 cases,bad in 24 cases,with the satisfactory rate of 86.5%.[Conclusion]It is an effective method of emergency microsurgery repair and one stage functional restoration in tretment of severe tissue defect of the hand.