Browsing by Author "Amado, P"
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- Adipose-Derived Stem Cell Therapy Combined With Platelet-Rich Plasma for the Treatment of Avascular Necrosis of the TalusPublication . Sousa, R; Babulal, J; Amado, PAvascular necrosis (AVN) is characterized by compromised blood supply to bone tissue, often resulting in significant pain and functional impairment. Conservative treatment options for early-stage AVN of the talus are scarce, with non-weight-bearing protocols and hyperbaric oxygen therapy showing limited efficacy. This report presents a potential novel approach to managing non-traumatic AVN of the talus using a combination of adipose-derived stromal vascular fraction (SVF) and platelet-rich plasma (PRP). A 60-year-old male presented with progressive right ankle pain of a two-year evolution. Magnetic resonance imaging (MRI) revealed stage II AVN of the talus with extensive bone infarctions occupying almost all of its volume but with no collapse. A single injection of SVF and PRP was performed after diagnostic arthroscopy, followed by a tailored rehabilitation protocol. The patient experienced significant pain relief, with no further need for analgesics, and was able to return to non-impact sports. At the 18-month follow-up, functional scores showed significant improvement, and MRI showed stable AVN with no evidence of collapse. This report highlights SVF and PRP as a potential effective conservative option for non-traumatic talar AVN.
- Fresh bipolar osteochondral allograft of the ankle. Review of the literature and case report of a young patient with bilateral post-traumatic osteoarthritisPublication . Pimenta, R; Carvalho, P; Amado, POBJECTIVES: The treatment of severe post-traumatic ankle arthritis remains a challenge nowadays. Since patients suffering from this pathology are mainly young and active people, a correct reconstruction, if possible, of the articular cartilage defects of the tibiotalar joint is very important to achieve a good result. Fresh bipolar osteochondral allograft (FBOA) is a promising operative technique, as an alternative to arthrodesis and total ankle replacement, in pain relief, restoration of function and indefinite delay of arthritic disease progression. METHODS: The authors made a review of the literature and present a case report of a young 30 years-old man, with bilateral post-traumatic osteoarthritis of the ankle, treated with (FBOA). The patient was evaluated clinically and radiographically monthly. RESULTS: Pain relief and postoperative function was significantly improved reaching 94 points in the left ankle (preoperative of 40 points), and 92 points in the right ankle (preoperative 42 points) AOFAS score. CONCLUSIONS: Fresh tibiotalar allografting seems to be a good alternative to arthrodesis and prosthetic replacement, in the treatment of ankle arthropathy and big articular cartilage defects mainly in young and active patients. This procedure achieves a good pain relief, maintaining functional joint motion and decreasing the risk of adjacent joint arthritis.
- Operative Treatment of Nonprimary Osteochondral Lesions of the Talus: A Systematic ReviewPublication . Correia Cardoso, R; Andrade, R; Monteiro, I; Machado, C; Malheiro, FS; Serrano, P; Amado, P; Espregueira Mendes, J; Pereira, BSBackground: Nonprimary osteochondral lesions of the talus (OLT) pose a significant challenge in orthopaedics, with no definitive consensus on optimal surgical treatment. Purpose: To consolidate the most recent evidence on operative treatments for nonprimary OLT by assessing patient-reported outcomes (PROs), postoperative complications, and clinical failures. Study design: Systematic review; Level of evidence, 4. Methods: This review adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 and PRISMA in Exercise, Rehabilitation, Sport medicine and Sports science guidelines. Searches were conducted in PubMed, Embase, and Cochrane Library databases through June 2023. Eligible studies evaluated operative outcomes in skeletally mature patients with nonprimary OLT after failed previous surgeries. Primary outcomes included clinical and functional PROs. Secondary outcomes included postoperative complications and clinical failures. Quantitative analyses involved weighted means, mean differences, minimal clinically important differences, success rates (95% binomial proportion confidence interval), and a pre-to-postoperative meta-analysis. Results: Out of 3992 identified records, 50 studies involving 806 ankles from 794 patients were included. All operative treatments significantly improved PROs (P < .05), except osteochondral allograft transplantation (OCA) for American Orthopaedic Foot and Ankle Society and pain (visual analog scale/numeric rating scale [VAS/NRS]) scores and HemiCAP for pain (VAS/NRS) scores. Autologous chondrocyte implantation (ACI) and osteochondral autologous transplantation (OAT) demonstrated the greatest PRO success rates, exceeding 80%. Postoperative complications occurred in 4% of cases, most frequently with HemiCAP. Clinical failures affected 22% of cases, particularly with autologous matrix-induced chondrogenesis, OAT, OCA, and HemiCAP. Conclusion: Our systematic review demonstrated that ACI and OAT are promising treatments for nonprimary OLT, with ACI showing fewer clinical failures than OAT. Conversely, OCA and HemiCAP exhibited lower effectiveness and higher clinical failure rates, suggesting a need for reassessment.