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Arch Plast Surg > Volume 45(6); 2018 > Article
Jin and Kim: Versatility of the reverse sural fasciocutaneous flap for the reconstruction of lower leg defects caused by chronic osteomyelitis
Recently, many studies have shown no difference in efficacy between musculocutaneous and fasciocutaneous flaps in the treatment of osteomyelitis [1]. The aim of this study was to examine the efficacy of the reverse sural fasciocutaneous flap for the reconstruction of chronic osteomyelitis defects on the distal lower leg. Between March 2013 and March 2018, five adult patients aged 38 to 85 years who underwent reconstruction with a reverse sural fasciocutaneous flap were included in this study (Table 1). These patients were diagnosed with chronic osteomyelitis at the Department of Orthopedic Surgery of Myongji Hospital and were referred to the Department of Plastic and Reconstructive Surgery for reconstruction of the soft tissue defects. Delayed distally-based fasciocutaneous reverse sural flaps were used in a 2-step procedure [2]. The patients were followed in our outpatient clinic and their healing status was quantitatively compared with previous findings by 3-phase bone scans, which all patients agreed to have performed for postoperative follow-up. Four of the five patients recovered progressively from osteomyelitis without complications, such as necrosis of the distal aspect of the flap or marginal dehiscence. These patients showed clinical resolution at the time of the last follow-up examination (Figs. 1-4). Complications such as necrosis and marginal dehiscence in the distal area often occur in reconstruction using a reverse sural flap. The authors performed a delayed procedure to overcome this and superficially undermined the proximal portion of the pedicle to protect the pedicle from twisting or kinking. However, in one case, chronic osteomyelitis had already progressed to bone necrosis and the patient underwent antibead insertion and a planned reoperation. The mean duration of follow-up for these patients was 9 months. During the follow-up of patients with 3-phase bone scans, the significant soft tissue uptake and increased blood flow due to the inflammatory reaction subsided gradually, and in cases with good results, these results disappeared completely. A reverse sural flap can be used to effectively treat chronic osteomyelitis without significant donor site morbidity or the complications that may occur during the elevation of a muscle flap [3]. This widely known flap is much simpler, requires less anesthetic time, and poses less risk to the patient than free tissue transfer, including muscles. Therefore, this flap may be a good option for the reconstruction of chronic osteomyelitis wounds on the lower leg.

CONFLICTS OF INTEREST

No potential conflict of interest relevant to this article was reported.

Notes

Ethical approval

The study was performed in accordance with the principles of the Declaration of Helsinki. Written informed consents were obtained.

Notes

Patient consent

The patients provided written informed consent for the publication and the use of their images.

Fig. 1.
(A) Preoperative findings of case 1. Defect wound caused by chronic osteomyelitis on left heel. (B) Flap migration by minimizing twisting and kinking of the pedicle. (C) Inset of the flap. (D) Six months after surgery.
aps-2018-00626f1.tif
Fig. 2.
(A, B) Preoperative 3-phase bone scan findings of case 1. Increased blood flow and soft tissue uptake in left foot. Focal increased uptake in left calcaneus on delayed bone scan. Suggestive of osteomyelitis (a 68-year-old male patient, there was an sprain on left ankle 1 month before flap surgery, after that I&D was performed due to abscess formation, and thereafter, about 3 cm sized soft tissue defect had remained). (C, D) Three-phase bone scan findings of 4 months after surgery. No significant increased blood flow or soft tissue uptake in left foot. No significant uptake on delayed bone scan. Resolved state of previous inflammation in left calcaneus.
aps-2018-00626f2.tif
Fig. 3.
(A) Preoperative findings of case 2. Wound dehiscence after internal device removal surgery and defect wound caused by chronic osteomyelitis on right heel. (B) Lesser saphenous vein and sural nerve was included in the pedicle. (C) Inset of the flap with minimizing twisting and kinking of the pedicle. (D) Six months after surgery.
aps-2018-00626f3.tif
Fig. 4.
(A, B) Preoperative 3-phase bone scan findings of case 2. Increased blood flow and soft tissue uptake in right heel with increased uptake on delayed bone scan, suggestive of osteomyelitis (a 38-year-old male patient underwent internal fixation of the calcaneus fracture 2 years before the flap surgery, and internal device removal 2 months before the flap surgery). (C, D) Three-phase bone scan findings of 1 month after flap surgery. Decreased blood flow in right foot, decreased extent of increased soft tissue uptake in right heel, suggestive of improving process of osteomyelitis.
aps-2018-00626f4.tif
Table 1.
Demographics and clinical characteristics of the patients
Patient no. Age (yr)/sex Diagnosis Risk factors Delay period (day) Size of the flap (cm2) Complications Duration of follow-up (mo)
1 68/male Chronic osteomyelitis on the lateral malleolus caused by abscess formation None 11 9 × 3 None 6
2 38/male Chronic osteomyelitis on the calcaneus caused by surgical site infection Smoker 10 14.5 × 4 None 7
3 62/male Chronic osteomyelitis on the first metatarsal bone caused by diabetic foot Diabetes mellitus, smoker 14 5 × 4 None 18
4 85/male Chronic osteomyelitis on the tibia caused by an open tibiofibular fracture Old cerebral infarction, peripheral arterial occlusive disease 15 12.5 × 5 None 6
5 65/male Chronic osteomyelitis on the calcaneus caused by diabetic foot Diabetes mellitus 14 15 × 6.5 Bone necrosis 12

References

1. Heppert V, Becker S, Winkler H, et al. Myocutaneous versus fasciocutaneous free flap in the treatment of lower leg osteitis. Eur J Orthop Surg Traumatol 1995;5:27–31.
crossref pmid
2. Kneser U, Bach AD, Polykandriotis E, et al. Delayed reverse sural flap for staged reconstruction of the foot and lower leg. Plast Reconstr Surg 2005;116:1910–7.
crossref pmid
3. Yang C, Geng S, Fu C, et al. A minimally invasive modified reverse sural adipofascial flap for treating posttraumatic distal tibial and calcaneal osteomyelitis. Int J Low Extrem Wounds 2013;12:279–85.
crossref pmid
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