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Objective To explore the clinical application of antcrolateral thigh flap transplantation in repairing wound around the knee with descending genicular artery as the recipient vessel,when anterior or posterior tibial vessel could not be utilized.Methods From January,2015 to May,2017,free anterolateral thigh flaps obtained from anastomosis of descending genicular artery and great saphenous vein were transplanted to repair the skin soft tissue defect around the knee combined with tendon and bone exposure in 7 patients,after preoperative color Doppler sonography ultrasound (CDU) for precise positioning.There were 4 males and 3 females,with the flap area ranging from 18.0 cm×8.0 cm-38.0 cm×8.0 cm.All of the donor sites were sutured directly.Postoperative followedup was done termly.Results All the patients were followed-up for 6 to 14 months,with an average of 8.9 months.Typically,2 cases had large defect areas,with distal flap necrosis of 6.0 cm and 4.0 cm,respectively,which were resected and achieved secondary skin graft healing on the residual surface.Additionally,4 cases had completely survived flaps and achieved secondary skin graft healing on the residual surface.The remaining 1 case had completely survived flap,but the distal flap near the anteromedial tibia developed bone exposure as a result of the complicated osteomyelitis.As a result,the patient received gastrocnemius myocutaneous flap to repair the wound.Conclusion Anterolateral thigh flap transplantation in repairing skin soft tissue defect wound around the knee,with descending genicular artery as the recipient vessel,can achieve satisfactory clinical efficacy,which can serve as one choice for flap repair in wound around the knee.
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Objective To evaluate the outcomes of the free bone flap of medial femoral condyle for treatment of old scaphoid fracture with bone necrosis and review the utility of this procedure.Methods Eleven cases of old scaphoid fracture with bone necrosis were treated with the free medical femoral condyle bone grafting between Feburay,2013 and May,2015(9 males and 2 females).The average age was 34 years ranged from 27 to 55 years.Six cases were in left wrist,and other 5 cases were in right.Six cases were in waist area,and the other 5 cases were proximal pole nonunion.All cases were evaluated with 3D-CT scan,while humpback deformity were occurred in 6 cases,and avascular necrosis at the proximal pole were occurred in 3 cases.After refreshing the fracture,the free medical femoral condyle bone was transferred to the scaphoid,reduct the scaphoid and fix with the Kirschner wire.An endto-side anastomosis was performed with the bone flap artery and the radial artery,accompanied by the end to end anastomosis of the flap vein and the vein with the radial artery.The plaster was used for 8 weeks.Bone healing was evaluated with X-ray and 3D CT scan.A functional review was performed after the operation and a Mayo wrist scoring test was taken 6 months after the treatment.Results The average followed-up period was 13.1 months(ranged from 9 to 24 months).Bone union were demonstrated in all cases at 13.4 weeks after the operation (ranged from 11 to 18 weeks).Mayo wrist scoring testing showed excellent in 5 cases,good in 4 cases,and fair in 2 cases.Conclusion Free bone flap of medial femoral condyle is constant in vascular anatomy,and is easy to perform with plenty bone graft and less morbidity at donor site.Medial femoral condyle bone flap transplantation based on the descending gennicular vessels is an effective method for treatment of old scaphoid fracture with bone necrosis.
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Objective Anatomical researches of two long superiror genicular vessels,the descending branch of lateral circumflex femoral artery (LCFA) and the descending genicular artery(DGA),were performed to discuss the feasibility of reconstruction in lower leg's destruction injury by free flaps transplant anastomoses with these two long superior genicular vessels.Methods Thirty embalmed lower limb specimens from adult cadavers perfused with red latex were used for this anatomical study.The superior of patella,anterior inferior iliac spine and adductor tubercle were used as observation landmark.Dissection started along the line that from the middle point of Inguinal Ligament to the middle point of superior line of patella,and dividedly turned over to posterior lateral part and posterior medial part.The followings were focused observed:①The external diameter at the beginning of the D-LCFA ; the 0.5 mm external diameter point of this artery,and its length to the beginning and superior of patella.②The external diameter at the beginning of DGA,the distance between the beginning of DGA and adductor tubercle.③Anastomoses relations of final branches of D-LCFA and DGA with other arteries around the knee.Results The external diameter of the beginning of D-LCFA was (2.73 ± 0.35) mm ; the 0.5 mm external diameter point of this artery's length to the beginning and to the superior of patella were (24.56 ± 0.92) cm and (6.09 ± 0.86) cm; both D-LCFA and DGA had sent out many perforator arteries on their ways; the final branch of D-LCFA and DGA had lots of anastomoses relations in perioseal deep fascia and superficial fascia with other genicular arteries.Conclusion Base on the anatomical researches,in theory,the two long superior genicular vessels (D-LCFA and DGA) have enough lengthes and blood supply to regress and anastomosis with free flaps transplant to repair lower leg's smashed wound.
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Objective To provide anatomical basis for the free saphenous branch of descending genicular artery flap and evaluate its clinical outcomes for the hand soft-tissue defects. Methods Fifteen fresh cadavers injected with lead oxide-gelatin mixture for three-dimensional visualization reconstruction using a spiral computed tomography scanner. The origin, course and distribution of the perforators of descending genicular artery were observed.From January 2005 to October 2011,seven patients with skin defect on the distant limbs were treated.The flap size was 5 cm × 6 cm-11 cm × 14 cm,vascular pedicle length 5.4 (4-7)cm. ResultsThe saphenous branch was consistent. It arised from the descending genicular artery (68％) or femoral artery(32％).The diameter of the saphenous branch was 1.5(1.1-1.7)mm at its origin above 9.0(4.0-16.0)cm from the medial epicondylar.Seven cases of flaps all survived,the average followup of 28 months,close to hand flap of skin texture,some sensory recovery,two-point discrimination 8-12mm. Conclusion Free saphenous branch of descending genicular artery flap is a reliable option for the treatment of soft tissue defect in hands. The pedicles were invariable of anatomy, thickness of the flaps is comparable,and procedure is simple and time saving.
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Objective To provide anatomical basis for the thigh medial neurocutaneous vascular flap pedicled with descending genicular artery perforators. Methods ① The course and distribution of thigh medial cutaneous nerve. ②Anastomosis between descending genicular artery perforators and thigh medial neurocutaneous vascular, were observed on 40 specimens of adult lower limb perfused with red latex. Mimic operation was performed on one side of fresh specimen. Results ①The line between the midpoint of inguinal ligament and medial femoral condyle can be considered as the projection on body surface of thigh medial cutaneous nerve. ②Perforating branches of descending genicular artery (infrapatellar branch )started from the lower edge of medial femoral condyle about 4 cm, and passed through the deep fascia in which the triangle depression surrounded by the vastus medialis muscle, adductor tendon and the medial femoral condyle to the subcutaneous. They also separated large number of small blood vessels, which closely aligned with the perineural and neural stem vascular chain of thigh medial cutaneous nerve. Then they formated vascular plexus in the upper part of thigh along the thigh medial cutaneous nerve longitudinal axis. Conclusion The thigh medial neurocutaneous vascular flap pedicled with descending genicular artery perforators can be formed to repair soft tissue defect around knee joint.
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Objective To discuss clinical application of descending genicular artery perforator flap.Methods According to the anatomic features of direction,branches and anastomosis of the descending genicular artery,the descending genicular genicular artery perforator flap at medial superior aspect of knee joint was designed to reconstruct the soft tissue defects at the anterior medial 1/3 of the calf and the anterior medial part and popliteal fossa of the knee,with the axis based on the anterior border of the Sartorius and with the pivot point on the site where the cutaneous branches from the superior medial genicular artery pierced out within the triangle concave surface bounded by the vastus medialis,the tendon of adductor magnus and the condylus medialis.Results All flaps survived well in five patients,with primary healing.After a follow-up of 1-12 months,all flaps turned out to be with good texture,near-normal color and good appearance.Conclusion With a constant anatomic location,excellent blood supply and easy surgical procedure,the descending genicular artery perforator flap is one of feasible ways for repair of soft tissue defects around the knee.
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0.05). Conclusions Ultrasonography is an objective, accurate, non-invasive and utility method to evaluate the saphenous artery of saphenous skin flap before operation.
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The descending genicular vessels and their branches were observed on 50 adult lower extremities.The saphenous branch supplies the skin on the medial genicular region.It has a larger caliber and a longer pedicle.The area distributed by this branch is 60.96?35.01cm2.The saphenous branch also gives out branches to the lower one third of the satorius muscle.The descending genicular vessels and it's articular branch in 88% cadavers give out the branches to the vastus medialis muscle.In addition,the great saphenous vein and the saphenous nerve were observed.The design for the medial genicular cutaneous flap and myocutaneous flap were discussed.