ObjectiveTo study the effectiveness of Keystone flap in the repair of soft tissue defect of lower extremity.MethodsThe clinical data of 27 cases with soft tissue defects of lower extremity treated by Keystone flap between January 2018 and June 2020 were retrospectively analyzed. There were 18 males and 9 females, with an average age of 43.9 years (range, 8-63 years). The cause of soft tissue defects included skin tumor in 3 cases, ulcer in 2 cases, soft-tissue infection in 8 cases, trauma in 7 cases, and donor site defect after free or pedicled flap transplantation in 7 cases. Defect size ranged from 2.0 cm×1.5 cm to 15.0 cm×9.5 cm. The types of Keystone flaps included type Ⅰ in 2 cases, type Ⅱa in 16 cases, type Ⅱb in 1 case, type Ⅲ in 6 cases, and Moncrieff modified type in 2 cases. The area of flap ranged from 3.0 cm×1.5 cm to 20.0 cm×10.0 cm. The donor site was directly sutured (26 cases) or repaired with skin grafting (1 case).ResultsThe operation time was 45-100 minutes, with an average of 67.5 minutes; the hospitalization stay was 3-12 days, with an average of 8.5 days. Postoperative incision dehiscence occurred in 1 case, and flap marginal necrosis occurred in 2 cases, all of which were completely healed after dressing change; 1 case of incision was swollen and congested with tension blisters, which resolved spontaneously at 7 days after operation. The other flaps and the skin grafting survived and healed successfully, the wounds of recipient and donor sites healed by first intention. The healing time was 2-3 weeks (mean, 2.2 weeks). No pain occurred in all patients. All 27 cases were followed up 3-26 months (mean, 11.5 months). No obvious scar contracture and bloated skin flap were found. The texture and color of the skin in the recipient area were similar to those of the surrounding tissues and feel existed.ConclusionThe Keystone flap is a feasible and efficient way to repair soft tissue defect of lower extremity. Furthermore, the skin color and texture is similar to the surrounding tissue after healing.
ObjectiveTo summarize the effectiveness of delayed skin-stretching device in treatment of skin and soft tissue defects.MethodsBetween December 2014 and December 2016, 10 cases of skin and soft tissue defects were treated with delayed skin-stretching device. There were 6 males and 4 females with an average age of 53 years (range, 42-64 years). The skin and soft tissue defects were caused by acute trauma in 6 cases. The incision could not be closed directly after making incisions because of osseous fascia syndrome in 3 cases. The skin soft tissue defect caused after huge carbuncle incision and drainage in 1 case. The defect located at thigh in 4 cases, lower leg in 3 cases, upper arm in 2 cases, back in 1 case. The defect area ranged from 10 cm×4 cm to 22 cm×12 cm. Pinch test was performed on the wound margin, which confirmed that the wound could not be closed directly.ResultsTension blisters were found in 3 cases during traction, and no complications such as impaired blood circulation or skin necrosis occurred in all cases. Skin defects closed directly after continuously stretching for 7-18 days. No skin graft or free flap repair was performed in all patients. The wound healed well after operation. All the 10 patients were followed up 5-8 months (mean, 6.5 months). There was no necrosis around the wound margin and the scar was linear. The sensation and function were not affected.ConclusionDelayed skin-stretching device is an effective method to treat skin and soft tissue defects, which has the advantages of simple operation, lower risk of operation, less complications, and reliable effectiveness.
ObjectiveTo investigate the clinical application of the anterior tibial artery perforator propeller flap relay peroneal artery terminal perforator propeller flap in repair of foot and ankle defects.MethodsBetween October 2014 and October 2018, 18 cases with foot and ankle defects were treated. There were 12 males and 6 females with an average age of 32.8 years (range, 8-56 years). There were 11 cases of traffic accident injuries, 3 cases of falling from height injuries, and 4 cases of heavy objects injuries. The wound was at the dorsum of the foot in 9 cases, the heel in 4 cases, the lateral malleolus in 5 cases. The time from injury to flap repair was 7-34 days (mean, 19 days). The size of wound ranged from 6.0 cm×2.5 cm to 11.0 cm×6.0 cm. The foot and ankle defects were repaired with the peroneal artery terminal perforator propeller flap in size of 6 cm×3 cm-18 cm×7 cm, which donor site was repaired with the anterior tibial artery perforator propeller flap in size of 8 cm×3 cm-16 cm×6 cm.ResultsOne patient had a hemorrhagic swelling in the peroneal artery terminal perforator propeller flap, and survived after symptomatic treatment. All recipient and donor sites healed by first intention. Eighteen patients were followed up 6-15 months (mean, 12.5 months). At last follow-up, the shape, color, texture, and thickness of the flaps in the donor sites were similar with those in the recipient sites. There were only linear scars on the donor sites. The two-point discrimination of the peroneal artery terminal perforator propeller flap ranged from 10 to 12 mm (mean, 11 mm). According to American Orthopaedic Foot and Ankle Society (AOFAS) score criteria, the results were excellent in 15 cases and good in 3 cases, with an excellent and good rate of 100%.ConclusionThe foot and ankle defects can be repaired with the anterior tibial artery perforator propeller flap relay peroneal artery terminal perforator propeller flap. The procedure is not sacrificing the main vessel and can avoid the skin grafting and obtain the good ankle function.
Objective To investigate the effectiveness of free superficial circumflex iliac artery flap (SCIP) combined with deep inferior epigastric perforator flap (DIEP) in repairing large soft tissue defects of upper extremities. MethodsBetween February 2017 and January 2021, free SCIP combined with DIEP was used to repair 15 patients with large soft tissue defects of upper extremities. There were 12 males and 3 females, aged from 34 to 52 years, with a median age of 41 years. The causes of injury were mechanical injury in 11 cases and traffic accident injury in 4 cases. There were 9 cases of circular skin defect in the forearm and 6 cases of skin defect around the upper arm and elbow joint, with the defect in size of 15.5 cm×10.5 cm to 26.5 cm×15.5 cm, accompanied by exposure of deep tissues such as tendons and bones. There were 7 cases with open fractures and 8 cases with vascular and nerve injuries. The time from injury to operation ranged from 7 to 14 days, with an average of 7.5 days. The flaps in size of 16.0 cm×11.0 cm to 27.0 cm×16.0 cm were harvested; the thickness of the flaps was 0.8-1.3 cm, and the excess fat tissue was removed under the microscope after harvesting. The length of proximal vascular pedicle was 5.0-7.0 cm, and of distal vascular pedicle was 3.0-5.0 cm. The donor site was closed and sutured directly, and the navel was reconstructed. Results The flaps survived successfully in 14 cases, and the arterial crisis occurred in 1 case at 10 hours after operation, and the flap survived after surgical exploration. All the wounds in the donor and recipient sites healed by first intention. All 15 patients were followed up 3-14 months, with an average of 10.5 months. The appearance, elasticity, and texture of flap were good without obvious bloat, contracture, or adhesion. The donor site healed well, no abdominal wall hernia was found, and the appearance of reconstructed navel was good, only linear scar left. At last follow-up, 12 cases were evaluated as excellent and 3 cases were good according to the evaluation criteria of flap function of the Chinese Medical Association Microsurgery Branch. The sensation recovered to \begin{document}${\rm{S}}_{3^+} $\end{document} in 7 cases and \begin{document}${\rm{S}}_3 $\end{document} in 8 cases. ConclusionFree SCIP combined with DIEP has a large excision area and excellent skin ductility. It is an effective clinical method for repairing large soft tissue defects of upper extremities.
ObjectiveTo explore the effectiveness of free lobed perforator flaps in repairing of complex wounds of limbs. Methods Between January 2018 and January 2021, 10 patients with complex wounds of limbs were admitted. There were 7 males and 3 females, aged from 32 to 64 years, with an average age of 45 years. There were 4 cases of traffic accident injuries, 3 cases of machine strangulation injuries, 1 case of machine crush injury, and 2 cases of heavy object crush injuries. There were 5 cases of upper limb wounds and 5 cases of lower limb wounds. The size of wounds ranged from 11 cm×10 cm to 25 cm×18 cm. The wounds were repaired with tri-lobed flaps of the descending branch of the lateral femoral circumflex artery in 7 cases, four-lobed flaps in 2 cases, and with tri-lobed flaps of the descending branch of the lateral femoral circumflex artery combined with oblique branch in 1 case. The size of flaps ranged from 12.0 cm×10.5 cm to 28.0 cm×12.0 cm. The donor sites were sutured directly in 9 cases and repaired with superficial iliac circumflex artery perforator flap in 1 case. ResultsSinus formed at the edge of the flap in 1 patient, which healed after dressing change and drainage; other flaps survived well, and the wounds healed by first intention. The skin flap at donor site survived, and the incisions healed by first intention. All patients were followed up 6-24 months (mean, 11 months). All flaps had good appearance and function, and linear scars were left at the donor site without obvious complications. ConclusionFree lobed perforator flap is an alternative method to repair complex wounds of limbs with high safety, good effectiveness, and less complications.
ObjectiveTo investigate the effectiveness of abdominal free flap carrying bilateral superficial circumflex iliac arteries for repairing large skin and soft tissue defects of foot and ankle.MethodsBetween June 2016 and June 2019, 15 patients with large skin and soft tissue defects of foot and ankle were admitted, including 10 males and 5 females with an average age of 30 years (range, 10-60 years). The causes of injury included 6 cases of traffic accident, 3 cases of machine strangulation, 3 cases of heavy object injury, 2 cases of fall, and 1 case of electric shock. The time from injury to admission was 3 hours to 10 days, with an average of 2 days. The wound located at dorsal foot in 5 cases, ankle in 6 cases, dorsal foot and ankle in 3 cases, and dorsal foot and sole in 1 case. All wounds were contaminated to varying degrees and accompanied by tendon and bone exposure, including 5 cases of extensive necrosis of the dorsal skin with infection. The area of defects ranged from 18 cm×6 cm to 25 cm×8 cm. There were 9 cases of foot and ankle fractures and dislocations, and 2 cases of foot and ankle bone defects. The wound was repaired with abdominal free flap carrying bilateral superficial circumflex iliac arteries. The area of the flaps ranged from 20 cm×8 cm to 27 cm×10 cm; the skin flaps were thinned under the microscope to make the thickness of 0.5-1.0 cm, with an average of 0.7 cm. All incisions at the donor site were sutured directly.ResultsDuring the operation, 1 case was replaced with an abdominal free flap carrying the superficial abdominal artery because the superficial iliac circumflex artery was thin and the superficial abdominal artery was thicker. The skin flaps of 15 cases survived smoothly, and the wounds healed by first intention; the donor incisions all healed by first intention. All patients were followed up 8-36 months, with an average of 15 months. The flap shape was satisfactory, with good texture and mild pigmentation of the flap edge, without obvious bloating, effect on shoe wear, or secondary surgical thinning of the flap. The linear scar left in the donor site and had no effect on hip joint movement. All fractures healed well, and the healing time ranged from 3 to 8 months, with an average of 6 months.ConclusionThe abdominal free flap carrying bilateral superficial iliac circumflex arteries has concealed donor site, with little damage, and can be sutured in one stage. The blood vessel is anatomically constant, with less variation, and reliable blood supply. It is one of the ideal flaps for repairing large skin and soft tissue defects of foot and ankle.
ObjectiveTo investigate the effectiveness of relay flap on repairing skin and soft tissue defect of auricle and donor site. MethodsBetween May 2014 and January 2016, 10 patients with auricular tumor were repaired by relay flap. There were 4 males and 6 females with an average age of 35 years (range, 21-69 years). There were basal cell carcinoma in 2 cases, pigmented nevus in 3 cases, papilloma in 4 cases, and Bowen’s disease in 1 case. The size of the residual wound after tumor resection ranged from 1.1 cm×1.0 cm to 2.3 cm×1.7 cm. The superficial temporal artery posterior auricular perforator flap was used to repair the auricle defect wound. The size of flap ranged from 1.5 cm×1.4 cm to 2.8 cm×2.0 cm. The first donor site was repaired with the posterior auricular artery perforator propulsive flap. The size of flap ranged from 4.0 cm×2.0 cm to 7.5 cm×3.0 cm. The wound of the second donor site was sutured directly at the first stage. ResultsAll the flaps survived. The donor and recipient sites healed by first intention. The patients were followed up 10-28 months, with an average of 14.2 months. The appearance of reconstructed auricle was satisfactory, and the tumor had no recurrence. The appearance, color, texture, and thickness of the flaps were basically consistent with the recipient site, without obvious scar, traction deformity, or obvious abnormal sensation. ConclusionThe relay flap has advantages of reliable blood supply, the simple operation method, the concealed donor site, which is a good choice to repair the skin and soft tissue defect of auricle and donor site.
Objective To explore the feasibility and technical points of soft tissue defect reconstruction of the lower extremity using the distally based anterolateral thigh (dALT) flap based on perforating vessels from the lateral circumflex femoral artery (LCFA) oblique branch. Methods Between July 2010 and July 2016, 7 patients underwent defect reconstruction of the lower extremities using the dALT flap based on perforating vessels from the LCFA oblique branch. There were 4 males and 3 females with an average age of 26.7 years (range, 3-58 years). The etiologies included angiofibrolipoma in 1 case, malignant fibrous sarcoma in 1 case, soft tissue sarcoma in 1 case, and post-burn scar contracture in 4 cases. The disease duration was 13 years, 1 year, and 8 months in 3 patients with tumors respectively, and was from 6 months to 35 years in 4 patients with post-burn scar contracture. After resection of lesion tissues, the defect size ranged from 8 cm×6 cm to 24 cm×8 cm. The flap size ranged from 9 cm×7 cm to 24 cm×8 cm. The length of the pedicle ranged from 12 to 22 cm (mean, 16.6 cm). The distance from the flap pivot point to the superolateral border of the patella ranged from 9.5 to 14.0 cm (mean, 11.8 cm). The donor sites were directly closed in 6 cases and covered with the split-thickness skin graft in 1 case. Results All flaps survived after surgery without any major complications. All wounds at the donor and the recipient sites healed primarily. The patients were followed up from 5 to 54 months (mean, 30.7 months). The color, texture, and thickness of the flaps were similar to those of the surrounding skin. No tumor recurrence was observed. The range of motion of flexion and extension of the knee joint were greatly improved in the patients with post-burn scar contracture. Conclusion For patients who have the oblique branch from the LCFA descending branch which sends out perforating vessels to the skin of the anterolateral thigh region, a dALT flap could be used to reconstruct soft tissue defects of the lower extremities.
ObjectiveTo investigate whether the technical modifications regarding the risk factors related to the partial necrosis of the distally pedicled sural flap could reduce the partial necrosis rate of the flap.MethodsA clinical data of 254 patients (256 sites) (modified group), who used modified technique to design and cut distally pedicled sural flaps to repair the distal soft tissue defects of the lower limbs between April 2010 and December 2019, was retrospectively analyzed. Between April 2001 and March 2010, 175 patients (179 sites) (control group) who used the traditional method to design and cut the skin flap to repair the distal soft tissue defects of the lower limbs were compared. Various technical modifications were used to lower the top-edge of the flap, reduce the length-width ratio (LWR) of the flap and width of the skin island. There was no significant difference in gender, age, etiology, duration from injury to operation, site and area of the soft tissue defect between groups (P>0.05). The length and width of the skin island and adipofascial pedicle, the total length of the flap and LWR, and the pivot point position were measured and recorded. The top-edge of the flap was determined according to the division of 9 zones in the posterior aspect of the lower limb. The occurrence of partial necrosis of the flap and the success rate of defect reconstruction were observed postoperatively.ResultsThere was no significant difference in the length and width of the skin island, the length of the adipofascial pedicle, total length and LWR of the flap, and pivot point position of the flap between groups (P>0.05). The width of the adipofasical pedicle in modified group was significant higher than that in control group (t=–2.019, P=0.044). The top-edge of 32 flaps (17.88%) in control group and 31 flaps (12.11%) in modified group were located at the 9th zone; the constituent ratio of the LWR more than 5∶1 in modified group (42.58%, 109/256) was higher than that in control group (42.46%, 76/179); and the constituent ratio of width of skin island more than 8 cm in control group (59.78%, 107/179) was higher than that in modified group (57.42%, 147/256). There was no significant difference in the above indicators between groups (P>0.05). In control group, 155 flaps (86.59%) survived completely, 24 flaps (13.41%) exhibited partial necrosis. Among them, 21 wounds healed after symptomatic treatments, 3 cases were amputated. The success rate of defects reconstruction was 98.32% (176/179). In modified group, 241 flaps (94.14%) survived completely, 15 flaps (5.86%) exhibited partial necrosis. Among them, 14 wounds healed after symptomatic treatments, 1 case was amputated. The success rate of defect reconstruction was 99.61% (255/256). The partial necrosis rate in modified group was significantly lower than that in control group (χ2=7.354, P=0.007). There was no significant difference in the success rate between the two groups (P=0.310). All patients in both groups were followed up 1 to 131 months (median, 9.5 months). All wounds in the donor and recipient sites healed well.ConclusionThe partial necrosis rate of the distally based sural flap can be decreased effectively by applying personalized modified technical for specific patients.
Objective To summarize the cl inical experience of repairing soft tissue defect in dorsal pedis with reversed fascia pedicled peroneal perforating branch sural neurofasciocutaneous flap, and to explore surgery matters needingattention and measures to prevent flap necrosis. Methods Between August 2000 and April 2009, 31 patients with soft tissue defects in dorsal pedis were treated with reversed fascia pedicled peroneal perforating branch sural neurofasciocutaneous flaps. There were 23 males and 8 females with a median age of 34 years (range, 3-65 years). Defects were caused by traffic accident in 20 cases, by machine in 2 cases, and by crush in 2 cases. The time from injury to admission was 1-32 days (mean, 15 days). And 6 cases had chronic ulcer or unstable scar excision with disease duration of 6 months to 10 years, and 1 case had squamous carcinoma with disease duration of 5 months. The wounds were located in medial dorsal pedis in 12 cases and lateral dorsal pedis in 19 cases; including 14 wounds near the middle metatarsal and 17 wounds beyond the middle metatarsal (up to the metatarsophalangeal joint in 10 cases). All cases accompanied with bone or tendon exposure. Five cases accompanied with long extensor muscle digits tendon rupture and defect, 1 case accompanied with talus fracture, 1 case accompanied with talus fracture and third metatarsal fracture. The size of the wounds ranged from 6.0 cm × 4.5 cm to 17.0 cm × 10.0 cm. The size of the flaps ranged from 8.0 cm × 5.5 cm to 20.0 cm × 12.0 cm. The donor sites were resurfaced by skin graft. Results Seventeen flaps survived uneventfully, wounds healed by first intention. Distal epidermal or superficial necrosis occurred in 6 flaps at 5-12 daysafter operation, wounds healed by dressing change or skin graft. Distal partial necrosis occurred in 8 flaps (7 in medial dorsal pedis and 1 in lateral dorsal pedis) at 7-14 days after operation, wounds healed by skin graft in 3 cases, by secondary suture in 3 cases, by local flap rotation in 1 case, and by cross leg flap in 1 case. All skin grafts at donor sites survived uneventfully, wounds healed by first intention. Twenty-nine patients were followed up 6-29 months (mean, 19 months). The appearance was sl ightly overstaffed, but wearing shoe function and gait were normal. The texture and color of the flaps in all cases were good. There was no pigmentation and suppuration relapse. There was neither ankle plantar flexion deformity nor hammer toe deformity in 5 cases accompanied with long extensor muscle digits tendon rupture and defect. All fractures healed at 3 months after operation in 2 cases. Conclusion The reversed fascia pedicled peroneal perforating branch sural neurofasciocutaneous flaps are suitable to repair most soft tissue defects in lateral dorsal pedis. When the flaps are used to repair soft tissue defects in medial dorsal pedis, avoiding tension in flaps and fascia pedicles should be noted so as to improve flap survival.