Observation on curative effect of minimally invasive treatment assisted with auxiliary 3-dimensional printing external mold in distal radius fracture / 重庆医学

Objective To investigate the curative effect of bone plate screw external fixation minimally invasive treatment assisted with 3-dimensional printing extraposition mold in distal radius fractures.Methods The clinical and follow up data in 15 cases of distal radius fractures treated by bone plate screw ex-ternal fixation minimally invasive treatment assisted with 3-dimensional printing extraposition mold were ret-rospectively analyzed.The volar inclination angle,ulnar deviation angle,radius length at the time of before surgery,immediately after surgery,and 2 years after surgery were measured,by using standard anteroposterior and lateral X-ray films,as well as the wrist jiont flexion extension motion and dorsal extension motion at the time of 2 years after surgery were measured by using protractor.The grip strength of the hand 2 years after surgery was measured by using grip strength meter.Visual Analog Scale(VAS)score was used to evaluate the pain level or wrist joint before and 2 years after surgery;Gartland Werley score was used to evaluate the wrist joint function 2 years after surgery.Results The follow-up lasted for 24.0-33.0 months with an aver-age of 26.5 months.The Gartland-Werley scores were excellent in 12 cases,good in 2 cases and fair in 1 case 2 years after surgery.The wrist joint flexion motion was(52.0±11.7)°,the wrist joint dorsal extension motion was(65.0±4.8)°,the grip strength of the affected side was(84.0±4.2)％of the healthy side.Compared with before operation,the volar inclination angle,ulnar deviation angle and radius shortening value and VAS score up were significantly improved 2 years after surgery(P＜0.05),and there was no statistically significant difference in immediately after surgery imaging parameters(volar inclination angle,ulnar deviation angle and radius shortening)immediately after surgery compared to 2 years after surgery(P＞0.05).Conclusion The bone plate screw external fixation minimally invasive treatment assisted with 3-dimensional printing extrapo-sition mold in distal radius fractures has the advantages of individualized bone plate screw,precision guidance position angle,minimal invasion,low demand for skin and soft tissue condition and easy taking out.The fixa-tion is reliable and the joint function recovered well and the short follow up effect is satisfactory.

Application of the flap pedicled with superior malleolus perforator of anterior tibial artery in reconstruction of soft tissue defects in foot and ankle / 中华显微外科杂志

Objective:To explore the clinical effects of the flap pedicled with superior malleolus perforator of anterior tibial artery in reconstruction of the soft defects in foot and ankle.Methods:A retrospective study was carried out to analyze 19 patients with soft tissue defects in foot and ankle. Ninteen patients, which were 11 males and 8 females and aged 21-75 (mean, 39) years, received the surgery between April, 2018 and June, 2019. According to the anatomy of superior malleolus perforating flaps and the size and shape of the soft tissue defects in foot and ankle, flaps were designed and harvested in the anterolateral side of the shank. The sizes of flaps were 6.0 cm×5.0 cm-14.0 cm ×8.0 cm. Evaluation of clinical effects included flap survival, infection control, the elasticity, color, appearance and scars of the donor sites, skin sensations and patient satisfaction. The swelling of flap was also took into an account.Results:All 19 flaps survived after the surgery. The soft tissue defects and exposure of tendon, bone and steel plate were repaired very well. Both the donor and recipient sites healed at stage I. Duration of out-patient clinic followed-up was 2-16 months. All flaps survived very well with good shape, and the color and elasticity were very close to the nearby normal skin. Scars at donor sites were small and the functions of ankle and foot were satisfactory.Conclusion:The flap pedicled with superior malleolus perforator of anterior tibial artery in reconstruction of the soft tissue defect in foot and ankle delivered satisfactory clinical effects. This flap has reliable perforating blood vessels hence reliable blood supply with high survival rate of flaps. It is one of the simple, safe and optimal methods to repair soft tissue defects in foot and ankle.

Microsurgical repair of many places and polymorphous skin defects of hands / 中华显微外科杂志

Objective To discuss the clinical effects of the many kinds of combined skin flaps of foot which used for repairing of many places and polymorphous skin defects of hands.Methods This study included 18 patients (15 male and 3 female) with a mean age of 32.6 years (range 15-56 years) between September 2003 and January 2012.The skin defect of hand were 2-3 places and the size of the defect ranged 1.5 cm × 2.0 cm-2.5 cm × 13.0 cm.All of them with bones and tendons exposure or defect.These 18 patients with many places and polymorphous skin defects of hands were treated with combined anterosuperior malleolusdorsalls pedis flaps (6 cases),three-leaf flap of dorsum of foot (2 cases),combined the first dorsal metatarsal artery island flap and toe back flap (5 cases)and combined toe back flaps (5 cases).Meanwhile,deep peroneal nerve was used to repair defect of digital nerve or dorsal digital nerve and long extensor tendon of toes was used to repair digital flexor tendon or digital extensor tendon.Results Eighteen patients with 32 flaps survived.In the follow-up of 4 months-2 years,the fingers and skin flaps were in good shape and normal color.The sensation of the hands of the patients with nerve repaired was restored to S2-S3 and the two-point discrimination was 8-10 mm.The motor function of the hands of the patients with tendons repaired was good,which can be competent to daily life and work.Conclusion Many kinds of combined skin flaps of foot were used to repair many places and polymorphous skin defects of hands.

Clinical application of the compound muscle flap combined by the lateral sural artery perforators and the nutrient vessels of the lateral sural cutaneous nerve / 中华显微外科杂志

Objective To observe the anatomic relationship between the lateral sural artery perforators and the nutrient vessels of the lateral sural cutaneous nerve that were combined to design a compound muscle flap.And to observe the effect of this flap clinical application.Methods Ten adult and fresh cadaver lower limbs were observed the anatomic relationship between the lateral sural artery perforators and the nutrient vessels of the lateral sural cutaneous nerve,and were combined to design a compound muscle flap.Clinically applied in 5 cases,and the flap sizes ranged from 6 cm × 9 cm to 9 cm × 12 cm.Results After into the muscle,the lateral sural artery issued 3-5 perforating branches (OD:0.2-1.8 mm) along the way,which provided nutrition for the lateral head of the gastrocnemius and the surrounding skin and involved in the formation of shallow and deep fascia vascular network with the nutrient vessels of the lateral sural cutaneous nerve.From Feburary 2009 to November 2011,the compound pedicled muscle flap were clinically applied in 5 cases to repair the skin defects of the anterior knee and proximal tibia.Flaps in 4 cases completely survivedand 1 case had partial superficial necrosis on the distal part of the flap,which healed after dressing change.Conclusion The compound pedicled muscle flap has two sets of blood supply that could expand the area of the flap,which could guarantee its feeling.This kind of flap could repair the complicated skin and soft tissue defects around the knee joint.

Clinical application of branch artery of the sural medial gastrocnemius muscle flap combine with sural nerve nutritional vessel axial / 中华显微外科杂志

Objective To investigate the clinical efficiency of branch artery of the sural medial gastrocnemius muscle flap combine with sural nerve nutritional vessel axial.Methods From February 2006to March 2010,according to the position and size of the soft tissue defects,the muscle flap combined with branch artery of the sural medial gastrocnemius and sural nerve nutritional vessel axial were desingned and obtained to repair 7 cases of sofi tissue defects of the upper-region of the tibial.The flap size ranged from 8.0 cm × 8.0 cm to 12.0 cm × 10.0 cm.The vessel pedicle of branches ranged from 1.8-3.0 cm.The distribution of the vessel pedicle of branches ranged from 10.0-17.0 cm on the distant popliteal fossa,and ranged from 2.0-5.0 cm on the back of medial line.Results The outline and function were satisfactory during 6-15 months follow-up.Conclusion The blood supply of this flap is reliable without sacrifice of major arteries.Flap elevation is easy.It can transfer to a long distance and can repair large skin defects.It is very useful in repairing upper-region of the tibial large soft tissue defect.

Experimental study of recombinant human erythropoietin on sciatic nerve regeneration / 中华显微外科杂志

Objective To investigate the effect of recombinant human erythropoietin(rh-EPO) on the nerve regeneration of adult rats sciatic nerves. Methods Tirty-six healthy male Wistar rats were involved and left sciatic nerve repaired model was used.The experimental rats were divided randomly into two groups:the EPO group and the control group,18 rats in each group.rh-EPO 3 000 U/kg was injected daily into the abdominal in EPO group,and normal saline was injected into the abdominal every day after operation in control group.On 4 and 8 weeks after operation,these items were determined,the sciatic function index (SFI),biomechanics examination,histological observation,electrophysiological examination,myelinated fibers density and sectional area measurement.Results On weeks 4 after operation,the SFI of EPO group and control group were-65.26 ± 3.42 and-70.83 ± 4.12,respectively,the maximum tensile resistance were (3.86 ± 0.29)N/mm2 and (3.38 ± 0.21 )N/mm2,the delayed ratio of latency of motor nerve were 2.34 ± 0.23 and 2.78 ± 0.29,and the recovery ratio of wave amplitude were 0.23 ± 0.05 and 0.14 ± 0.03 respectively.On eight weeks after operation,the SFI of EPO group and control group were-51.34 ± 2.98 and-57.23 ± 4.86,respcetively,the maximum tensile resistance were (4.67 ± 0.36) N/mm2 and (4.13 ± 0.32) N/mm2,the delayed ratio of latency of motor nerve were 1.32 ± 0.15 and 1.62 ± 0.21,the recovery ratio of wave amplitude were 0.41 ± 0.09 and 0.26 ± 0.07,the nerve fibers cross ratio were 0.57 ± 0.05 and 0.38 ± 0.03,and the recovery ratio of sectional area of myelinated fibers were 0.81 ± 0.06 and 0.58 ± 0.03,respectively.Those items in EPO group were significantly superior to those in the control group (P ＜ 0.05 ＝.Conclusion rh-EPO can promote the injured nerve regeneration and improve the recovery of their function.

Application of the free double-skin paddle string-type composite fibular flap in the reconstruction of the combined defects of ulna and radium / 中华显微外科杂志

Objective To investigate the outcome of the free double-skin paddle string-type composite fibular flap in the reconstruction of the combined defects of ulna and radium. Methods From June 2005 to July 2009, 5 cases with combined defects of ulna and radium were reconstructed using the free double-skin paddle string-type composite fibular flap. The length of fibular segment for the reconstruction of ulnar defect ranges from 4.5 to 7.5 cm. The length of fibular segment for the reconstruction of radial defect ranges from 5.5 to 7.0 cm. The size of the flap varies from 5.0 cm × 3.0 cm to 8.0 cm × 5.5 cm. At the 12 month follow-up, the function of reconstructed forearm was evaluated based upon Enneking scoring system.Results Ten flaps in the 5 cases all survived. The time for the transplanted fibula healed on the radium and ulna was 4-6 months. The 5 patients were followed up from 14 months to 2 years. The forearm rotation functions were excellent in 2 cases, good in 2 cases and poor in 1 case. The eligible rate was 80%. The average Enneking score was 24.8, which indicated an average of 81.3% recovery of limb function. Conclusion Bone graft with blood supply can ensure the activity of osteocytes, which facilitates the fracture union.Whilst, the procedure can reconstruct multi-location and multi-tissue defects in the forearm. Therefore, the double-skin paddle string-type composite fibular flap is an ideal alternative for the reconstruction of the combined defects of ulna and radium and the skin.

Repairment of skin defects secondary to penetrating wound of palm with the application of free string-type dorsalis pedis flap and anterior malleolus flap / 中华显微外科杂志

Objective To investigate the clinical outcome of the feasible method of the free string type dorsalis pedis flap and anterior malleolus flap in the repairement of skin defects caused by penetrating wound of palm. Methods From May 2004 to July 2009, the free string-type dorsalis pedis flap and anterior malleolus flap were used to repair skin defects of 16 cases who sutained penetrating wounds of palm.Results All 32 flaps in the 16 cases were all survived. Follow-ups were done from 6 months to 2 years after operation. Both the appearances of the repaired palms and the functional recovery were satisfactory. The function assessment of the hand was excellent in 8 cases, good in 5 cases, fine in 2 cases and poor in 1 case.The eligible rate was 81.25%. Conclusion The anatomy of the dorsalis pedis flap and anterior malleolus flap is rare variant, which facilitate the dissection of the flaps during operation. The repairement of skin defects at two sides, both the palm and the back of hand, can be achieved via one operation. Therefore, the free string type dorsalis pedis flap and anterior malleolus flaps offer an ideal procedure to repair skin defects secondary to penetrating wound of palm.

Therapeutic analysis of severely contracture of the first web space with mocrosurgical operation / 中华显微外科杂志

Objective To investigate the methods and the therapeutic effects of groin flap and stylus recurrent branch of radial artery flap for the repair of severely contracture of the first web space. Methods From March 2007 to six 2009,45 patients with severely contracture of the first web space received treatment of groin flaps and stylus recurrent branch of radial artery flaps, with 6 to 12 months clinical observation. Among then, 33 patients received treatment of groin flaps, 12 patients received treatment of stylus recurrent branch of radial artery flaps, and 28 patients received the first web space widening as well as functional reconstruction of thumb abduction. Results Most of the flaps healed by first intention but also with distal necrosis for 3 stylus recurrent branch of radial artery flaps and 1 groin flap. And the weth of the first web space of all patients were more than 90% of comparison. From clinical observation,function of opposition recovered well. While some groinflaps got a litte fat and clumsy .The color of most flaps was as similar as normal besides, some groin flaps occurrenced pigmentation. Conclusion Children and adults below 50 yesrs should choose the groin flap, and aged people and adults more than 50yesrs shuould choose the stylus recurrent branch of radial artery flap firstly.

Treatment of kid foot soft tissue defect with reverse flap with cutaneous branch of fibular artery combine with sural nerve nutritional vessel axial / 中华显微外科杂志

Objective To investigate the clinical efficiency of kid foot soft tissue defect with reverse flap with cutaneous branch of fibular artery combine with sural nerve nutritional vessel axial. Methods From Feb. 2006 to Feb. 2009, according to the position and size of the soft tissue defects, the sural nerve nutritional vessel flap combine with the cutaneous branch of the peroneal artery were desingned and obtained to repair the 5 cases soft tissue defects of the foot. The flap size ranged from 8 cm × 7 cm to 18 cm × 10 cm. The vessel pedicle of cutaneous branches ranged from 1.7 cm to 3.0 cm. The distribution of the vessel pedicle of cutaneous branches ranged from 4.5 cm to 8.0 cm on the lateral malleolus. Results All flaps survived completely in 6 cases. The outline and function were satisfactory during 6-18 months follow-up. Among of 6 cases, the sural nerve were anastomosed with the acceptor sensory nerve in all cases. The skin sense were sat-isfactory after 1 year of operation and 2-point discrimination was 10-13 mm. Conclusion The blood supply of this flap is reliable without sacrifice of major arteries. Flap elevation is easy. It can reverse to a long dis-tance and can repair large skin defects. Especially this flap could have some sensory nerve. It is very useful in repairing kid foot large soft tissue defect.

Clinical application of the modified medial fascia pedicel flap of the lower leg and the research of the zonation of the fascia pedicel's location / 中华显微外科杂志

@#Objective To investigate the design and clinical result of the modified medial fasciocutaneous flap of lower leg in the different zonation. Methods The length of lower leg was divided into three zonations equally.According to the different zonation of the fasciocutaneous flap,the 45 patients were divided into three groups from Jan.2005 to Feb.2008.The defects of the patients were repaired with the flaps.The sizes of the flaps ranged from 5 cm×3 cm to 25 cm×10 cm.Results The flaps survived completely in 43 cases.The distal sides of flaps necrosed partially in 2 cases in the upper third of the lower leg.The necrosed part of the flap was repaired after the change dressings.The colour and texture of flaps were excellent,the appearance and function were satisfactory after a follow up of 4-20 months.Conclusion The modified medial fasciocutaneous flap of the lower leg is easy to design and dissect,blood supply is reliable without sacrifice of the major arteries.The flap can be used according to the different location of the fascia pedicel.It is the idea flap to repair the soft tissue defects of the front of knee joint,the leg,the ankle and the foot.

An experimental study on early active mobilization to promote regeneration of flexor tendon sheath / 中华创伤骨科杂志

Objective To study the different effects of early active mobilization on flexor ten don sheath regeneration when the sheath has bee n partially removed and when the inju red sheath has been sutured.Methods In 192Leghorns involved in this study,the zone II flexor digital profoun d tendons were partially ruptured at their bilateral 3rd digits.Their te ndon sheathes were partially removed or sutured.All the Leghorns were di vided into four groups randomly:active mo bilization-sheath removed(A 1 ),active mobilization-sheath sutur ed(A 2 ),immobilization-sheath removed(C 1 ),and immobilization-sheath suture d(C 2 ).Their toes were harvested in the1st,2nd,3rd,4th,8th and 12thweeks postoperatively.Then morphologic al observations and biomechanical tests were performed.All data were s tatistically analyzed.Results In the 1st week postoperatively,the tendon sheath structure disappeared in the injured areas in both groups of A 2 and C 2 ,while in groups of A 1 and A 2 ,neogenetic tendon sheath formed in t he operation areas.In groups of C 1 and C 2 dense scar tissues developed around the tendon without neogenesis of tendon sheath or sheath-like str ucture.There was no significant dif ference either morphologically or biomechanically between A 1 and A 2 as well as C 1 and C 2 while significant differences were found between A 1 and C 1 as well as A 2 and C 2 .Conclusions The pathologic transformation afte r sheath repair during active mobilization c an be divided into three stages:The s heath decomposed and degenerated in the1st week postoperatively.Early neogenetic sheath formed in 2weeks.The neogenetic sheath matured in 4to 8weeks.Active mobilization to promo te neogenesis of sheath is a key facto r to prevent adhesion.Only tendon sheath repair cannot prevent adhesion effectively.