Long‐term clinical and p atient‐reported outcomes in free flap reconstruction of the w eight‐bearing heel pad and n on‐weight‐bearing Achilles tendon regions

Principles of Defect Reconstruction After Wide Resection of Primary Malignant Bone Tumors of the Calcaneus: A Contemporary Review

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Objective Non-Invasive Bio-Parametric Evaluation of Regenerated Skin: A Comparison of Two Acellular Dermal Substitutes

Several dermal substitutes are available on the market, but there is no precise indication that helps surgeons choose the proper one. Few studies have tried to compare different xenogeneic bioengineered products, but no objective bio-parametric comparison has been made yet. Fifteen patients who underwent skin reconstruction with Integra® or Pelnac® were retrospectively evaluated. After at least 12 months of follow-up, an objective and quantitative assessment of several skin biophysical properties, such as color, texture, elasticity, hydration, glossiness and trans-epidermal water loss, were measured with non-invasive skin measurement devices. The grafted skin showed a reduction of the superficial hydration level and a tendency to lower values of trans-epidermal water loss with both dermal substitutes. Melanic and hemoglobin pigmentation were higher in comparison to the donor site in both groups, while a melanic pigmentation increase versus the surrounding skin was seen just with Integra®. Finally, the skin was found to be more elastic when reconstructed with Integra®. The skin barrier appeared to be intact in both groups. Hence, these substitutes are valuable means of skin regeneration. Integra® seems to be more advantageous for reconstructing areas that need more skin flexibility.

New and Recurrent Ulcerations after Free Tissue Transfer with Partial Bony Resection in Chronic Foot Wounds within a Comorbid Population

BACKGROUND

Chronic foot wounds often require bony resection; however, altering the tripod of the foot carries a risk of new ulcer development nearing 70%. Resulting defects often require free tissue transfer (FTT) reconstruction; outcomes data for various bony resection and FTT options may guide clinical decision-making regarding bone and soft-tissue management. The authors hypothesized that alteration of the bony tripod will increase risk of new lesion development after FTT reconstruction.

METHODS

A single-center retrospective cohort analysis of patients undergoing FTT from 2011 through 2019 with bony resection and soft-tissue defects of the foot was performed. Data collected included demographics, comorbidities, wound locations, and FTT characteristics. Primary outcomes were recurrent lesion (RL) and new lesion (NL) development. Multivariate logistic regression and Cox hazards regression were used to produce adjusted odds ratios and hazard ratios.

RESULTS

Sixty-four patients (mean age, 55.9 years) who underwent bony resection and FTT were included. Mean Charlson Comorbidity Index was 4.1 (SD 2.0), and median follow-up was 14.6 months (range, 7.5 to 34.6 months). Wounds developed after FTT in 42 (67.1%) (RL, 39.1%; NL, 40.6%). Median time to NL development was 3.7 months (range, 0.47 to 9.1 months). First-metatarsal defect (OR, 4.8; 95% CI, 1.5 to 15.7) and flap with cutaneous component (OR, 0.24; 95% CI, 0.07 to 0.8) increased and decreased odds of NL development, respectively.

CONCLUSIONS

First-metatarsal defects significantly increase NL risk after FTT. The majority of ulcerations heal with minor procedures but require long-term follow-up. Soft-tissue reconstruction with FTT achieves success in the short term, but NL and RL occur at high rates in the months to years after initial healing.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Risk, III.

How to measure success in lower extremity reconstruction, which outcome measurements do we use a systematic review and metanalysis

Different factors have to be considered and weighted in the treatment algorithm of lower extremity reconstruction. A combination of both clinicians' and patients' perspectives is necessary to provide a conclusive picture. Currently, there aren't any standardized and validated measurement data sets for lower extremity reconstructions. This makes it necessary to identify the relevant domains. We, therefore, performed a systematic review and metanalysis of outcome measurements and evaluated their ability to measure outcomes after lower extremity reconstruction. A systematic review and metanalysis according to the 'Preferred Reporting Items for Systematic Reviews and Meta-Analyses' protocol were performed for studies reporting at least one structured outcome measurement of lower extremity reconstruction. Both Patient (PROMs)- and Clinician reported outcome measurements (CROMs)were analyzed. Of the 2827 identified articles, 102 were included in the final analysis. In total 86 outcome measurements were identified, 34 CROMs, 44 PROMs and 8 (9.3%) outcome measurements that have elements of both. Twenty-four measure functional outcome, 3 pain, 10 sensations and proprioception, 9 quality of life, 8 satisfaction with the result, 5 measure the aesthetic outcome, 6 contours and flap stability and 21 contain multidomain elements. A multitude of different outcome measurements is currently used in lower extremity reconstruction So far, no consensus has been reached on what to measure and how. Validation and standardization of both PROMs and CROMs in plastic surgery is needed to improve the outcome of our patients, better meet their needs and expectations and eventually optimize extremity reconstruction by enabling a direct comparison of studies' results.

RB. Outcome Analysis Comparing Muscle and Fasciocutaneous Free Flaps for Heel Reconstruction: Meta-Analysis and Case Series

Background Choosing the components of free flap (fasciocutaneous or muscle) is one of the crucial but controversial decisions in heel reconstruction. This meta-analysis aims to provide an up-to-date comparison of fasciocutaneous flaps (FCFs) and muscle flaps (MFs) for heel reconstruction and to ascertain if one flap has an advantage over the other.

Methods Following the Preferred Reporting Item for Systematic Reviews and Meta-Analyses guidelines, a systematic literature review was performed identifying studies on heel reconstruction with FCF and MF. Primary outcomes were survival, time of ambulation, sensation, ulceration, gait, need for specialized footwear, revision procedures, and shear. Meta-analyses and Trial Sequential Analysis (TSA) were performed to estimate the pooled risk ratios (RRs) and standardized mean difference (SMD) with fixed effects and random effects models, respectively.

Results Of 757 publications identified, 20 were reviewed including 255 patients with 263 free flaps. The meta-analysis showed no statistically significant difference between MF and FCF in terms of survival (RR, 1; 95% confidence interval [CI], 0.83, 1.21), gait abnormality (RR, 0.55; 95% CI, 0.19, 1.59), ulcerations (RR, 0.65; 95% CI, 0.27, 1.54), footwear modification (RR, 0.52; 95% CI, 0.26, 1.09), and revision procedures (RR, 1.67; 95% CI, 0.84, 3.32). FCF had superior perception of deep pressure (RR, 1.99; 95% CI, 1.32, 3.00), light touch, and pain (RR, 5.17; 95% CI, 2.02, 13.22) compared with MF. Time to full weight-bearing (SMD, –3.03; 95% CI, –4.25, –1.80) was longer for MF compared with FCF. TSA showed inconclusive results for comparison of the survival of flaps, gait assessment, and rates of ulceration.

Conclusion Patients reconstructed with FCF had superior sensory recovery and early weight bearing on their reconstructed heels, hence faster return to daily activities compared with MFs. In terms of other outcomes such as footwear modification and revision procedure, both flaps had no statistically significant difference. The results were inconclusive regarding the survival of flaps, gait assessment, and rates of ulceration. Future studies are required to investigate the role of shear on the stability of the reconstructed heels.

Patient-reported outcomes following free flap lower extremity reconstruction: A systematic review and meta-analysis

PURPOSE

Free flap reconstruction in the lower extremity has shown success for the management of large and complex defects, restoration of function, and favorable aesthetic outcomes. Patient-reported outcomes (PROs) have not been well explored in previous literature. This meta-analysis aimed to provide a comprehensive summary of PROs after free flap reconstruction in the lower extremity.

METHODS

We searched MEDLINE and Embase from 1946 to 2021 for studies reporting on PROs following free flap reconstruction in the lower extremity.

RESULTS

Overall, 53 studies were included, and 11 studies reported validated PRO measures for meta-analysis. A total of 1953 patients underwent reconstruction with 1958 free flaps for lower limb defects with a mean follow-up of 3.26 (0.25-7.83) months. The mean postoperative Lower Extremity Functional Scale (LEFS) scores were 60.3 (±12) out of 80 points (4 studies, 85 patients). The mean postoperative AOFAS scores were 75.1 (±15) out of 100 points (4 studies, 68 patients). The mean postoperative SF-36 scores were 88.1 (±8.0) out of 100 points; mental health component was 48.7 (±8.9), and physical component was 38.4 (±8.2), out of 50 points (4 studies, 88 patients).

CONCLUSION

Our findings demonstrated that patients report improved physical health, mental health, and function following lower extremity reconstruction with free flaps. Patients reported similar improvements in functional scores following lower extremity reconstruction regardless of their free flap type. Furthermore, patients with myocutaneous flaps may have improved mental health and worse physical health scores when compared to perforator flaps. The evidence profiles presented in this review indicate that additional research is needed to help guide future decision-making.

One-stage reconstruction of the massive overlying skin and Achilles tendon defects using a free chimeric anterolateral thigh flap with fascia lata

BACKGROUND

Treatment for large defects in the non-weight-bearing Achilles tendon and soft tissues remains a reconstructive challenge. The free composite anterolateral thigh flap (ALT) with fascia lata (FL) has been indicated in the single-stage reconstruction of the Achilles tendon and soft tissue defect and this technique remain some disadvantages, such as the inability to perform primary flap thinning, requiring secondary flap thinning, and the delayed normalization of the range of motion of the ankle joint. The free chimeric ALT flap with FL was introduced as a novel alternative with many advantages in reconstructing the Achilles tendon and soft tissue defects. This paper reports the reconstruction of the massive Achilles tendon and overlying skin defects using free chimeric ALT flaps with FL.

METHODS

From June 2017 to October 2020, we performed on a series of 5 patients receiving free chimeric ALT flaps with FL to reconstruct the Achilles tendon and soft tissue defects. The age of patients ranged from 43 to 62 years old. All five patients had full-layer defects of the Achilles tendon with infection. The sizes of the skin defects ranged from 6 × 4 cm to 12 × 10 cm. The perforators from the descending branch of the lateral circumflex femoral arteries are located using a handheld Doppler. The perforators help to design the outline of the ALT flap and fascia flap. The skin flap was thinned under microscopy if the flap was too thick. The anastomosis was accomplished before insetting the flaps into the defect.

RESULTS

The size of the ALT flap ranged from 10 × 5 cm to 15 × 12 cm, and the size of the FL flap ranged from 7 × 4 cm to 10 × 8 cm. The mean perforator length for the skin flap and fascia lata was 3.3 cm (range, 2.5-5.0 cm) and 5.3 cm (range, 3.5-7.0 cm), respectively. Four patients received skin flap thinning up to 57%-79% of the flap thickness, while one patient did not need to debulk. The thickness of the ALT flap ranged from 6 to 13 mm. All the flaps survived completely and postoperative courses were uneventful without any complications. The follow-up time ranged from 12 to 51 months. All patients were able to stand and ambulate, and they were satisfied with the reconstructive results.

CONCLUSIONS

The free thin chimeric ALT with FL flap is appeared to be an appropriate treatment for the massive Achilles tendon and overlying skin defects. This may be a practical approach to improve the functional outcomes of patients with infected massive Achilles tendon and overlying skin defects.

Free flap reconstruction of plantar weight-bearing heel defects: Long-term functional and patient-reported outcomes

PURPOSE

Non-healing plantar weight-bearing heel ulcers are a challenging problem to treat. Free tissue transfer (FTT) reconstruction of the heel is an opportunity for limb salvage to preserve gait and ambulation. The aim of this study is to describe surgical and functional outcomes in patients who underwent FTT to treat chronic heel ulcers.

METHODS

A retrospective review of patients who underwent FTT for plantar heel ulcers from 2011 to 2021 was conducted. Patient demographics, comorbidities, perioperative data, postoperative complications, and long-term outcomes were recorded. Primary outcomes included flap success, complications, postoperative ambulation, patient-reported outcome measures and limb salvage, with patients stratified into limb salvage or eventual amputation groups.

RESULTS

Forty-four patients underwent 45 heel reconstructions. Average age and BMI were 57.3 years and 30.1 kg/m² , respectively. Thirty-eight patients (86.4%) had calcaneal osteomyelitis, 35 patients (79.5%) had diabetes, and 18 patients (40.9%) had peripheral vascular disease (PVD). Immediate microsurgical success rate was 95.6%. At mean follow-up of 19.6 ± 20.9 months, overall limb salvage rate was 73.3% (n = 33). Preoperative albumin levels were higher in limb salvage group compared to the amputation group (3.0 vs. 2.4 g/dl, p = .018). Prior stroke history and hypoalbuminemia were significantly higher in the amputation group compared to limb salvage group (p = .012 and p = .018, respectively). Risk for eventual amputation was associated with PVD (OR 4.0, p = .053), hypoalbuminemia (OR 4.9, p = .020), and postoperative infection (OR 6.3, p = .013). Of the 12 amputations that occurred, the most common indication for amputation was infection (n = 8, 66.7%), which most often occurred at the original wound location (62.5%). At most recent follow-up, 90.7% of patients (n = 39) were ambulatory.

CONCLUSION

FTT is an effective alternative to amputation in patients with chronic heel ulcers. Proper patient selection, preoperative optimization, and postoperative care are imperative to the success of this limb salvage procedure.

Comparison of flap reconstruction for soft tissue sarcomas of the foot and ankle

BACKGROUND

Foot and ankle soft tissue sarcomas (STS) are challenging for reconstruction due to limited surrounding soft tissue and weight-bearing requirements. Currently, there is a paucity of data examining the outcome of flap reconstruction following resection of a foot and ankle sarcoma.

METHODS

We reviewed 44 (31 female, 13 male) patients with STS arising from the ankle or foot which required coverage in the form of a free (n = 21), pedicled (n = 13), or rotational perforator flap (n = 10). The mean tumor size was 6 ± 5 cm, with 39 (89%) patients receiving radiotherapy. The mean follow-up was 10 ± 7 years.

RESULTS

There were no cases of amputation due to flap failure, with a 10-year limb salvage rate of 84%. Complications occurred in 19 (43%) patients, most commonly wound infections. There was no difference in the incidence of complications between patients undergoing a free flap and pedicled or perforator flap (odds ratio = 0.97, p = 1.0); with no difference in the mean Musculoskeletal Tumor Society (MSTS) score between patients with a free flap versus a pedicled/perforator flap (84% vs. 76%, p = 0.11).

CONCLUSION

Flap reconstruction is an essential part of limb salvage for foot and ankle STS. At final follow-up nearly all the patients are ambulatory with an acceptable MSTS score.

Free tensor fascia lata true-perforator flap transfer for reconstruction of the calcaneal soft tissue defect complicated with osteomyelitis in a patient with alcohol-induced Charcot foot: A case report and literature review

Charcot foot is can result in bone deformities and soft tissue defects. We report a case of alcohol-induced Charcot (AIC) foot with soft tissue defect including the weight-bearing zone of the heel and osteomyelitis, which was successfully reconstructed with free tensor fascia lata true-perforator flap (TFLtp). A 56-year-old male suffered from AIC foot with an 18 × 6 cm defect. Based on the preoperative ultrasound, we identified the overlying upper thigh area offering one of the thickest dermis. A TFLtp flap was raised sparing the TFL muscle based on one perforator without including the main trunk of the transverse/ascending branch of the lateral femoral circumflex vessel. The TFLtp flap was transferred to the heel and anastomosed to the posterior tibial artery in an end-to-side fashion. The patient complained no postoperative discomfort of the donor site and was able to walk on his foot after 5 weeks. This case report highlights that the TFLtp flap may offer thick dermis, faster surgery due to perforator level dissection and a concealed donor site.