ABSTRACT
BACKGROUND: Recently, a new approach of autologous chondrocyte implantation technique (using as biomaterial a collagen type i/iii membrane) based on increasing cell density called HD-ACI (High Density Autologous Chondrocyte Implantation) has been described. The objective of this paper was to study the clinical outcome and incidence of subchondral bone oedema in patients with cartilage lesions in the knee treated with HD-ACI at 1-2 years of follow-up. METHODS: This is a retrospective study performed with forty patients with chondral injuries grade iii-iv. All patients were treated with HD-ACI with a cellular dose of 5×106 chondrocytes /cm2 of lesion. The subjective perception of improvement of symptoms and functionality was measured with the IKDC score (International Knee Documentation Committee). The presence of bone oedema was assessed at 6, 12 and 24 months of follow-up by magnetic resonance imaging. RESULTS: IKDC values showed a significant improvement at 12 and 24 months (P<.001). The mean difference of IKDC between the baseline visit and 12 months was 26.3 points, and 31.6 points at 24 months. Twenty-seven point five percent of the patients presented subchondral bone oedema at 2 years of follow-up. CONCLUSIONS: HD-ACI is an effective and safe treatment that improves pain, clinical perception and functionality of the joint. No correlation was found between the presence of bone oedema and the patients' clinical outcome.
Subject(s)
Bone Diseases/etiology , Chondrocytes/transplantation , Edema/etiology , Knee Joint/surgery , Postoperative Complications/etiology , Adult , Female , Follow-Up Studies , Humans , Male , Retrospective Studies , Time Factors , Transplantation, Autologous/adverse effects , Transplantation, Autologous/methodsABSTRACT
Objetivo: Realizar una revisión bibliográfica, sobre la etiología, etiopatogenia y tratamiento de las tendinopatías, así como revisar la terminología utilizada. Material y método: Se consultaron diversas fuentes electrónicas y en papel. Se utilizó Pub-med como motor de búsqueda. Resultados: Estructuralmente, la lesión se caracteriza por una alteración de los tenocitos, una desorganización del colágeno, un aumento de la sustancia fundamental y un aumento de los vasos sanguíneos. Junto a todo ello, aparece una alteración de las metaloproteasas y sus inhibidores. Estas sustancias forman parte de la homeostasis normal del tendón, pero determinados factores de riesgo pueden alterar la regulación normal de estas sustancias y podrían contribuir a iniciar y mantener el proceso de forma indefinida. También se ha descrito que el proceso de apoptosis o muerte celular programada iniciada por un citocromo y una enzima podrían estar en su origen patogénico. Conclusiones: Persiste un desconocimiento del proceso que origina y mantiene la lesión. Debido a ello, en la actualidad se han propuesto diversas opciones terapéuticas con más o menos éxito, pero ninguna con una eficacia totalmente satisfactoria. Desde el punto de vista terminológico, el término usado de tendinitis no es adecuado (AU)
Objetive: To extensively review all publicated data regarding etiology, pathogenesis and treatment of this disease and, review the terminology that was used in these processes. Material y Methods: We consulted some electronic and paper knowledge sources and Pubmed was used as a search engine. Results: Morphologically, the basic lesion is a cellular alteration of tenocytes, collagen disorganization, and an increase in matrix content and blood vessels. Moreover, metalloproteases and its inhibitors are disturbed. A programmed apoptosis of cells initiated by a cytocrom has been suggested as the origin of the disease. Conclusions: Due to ignorance of it origin, no real effective treatment has been yet achieved. Some therapeutic interventions have been proposed, with variable degree of success. From the standpoint of terminology, the term most used of tendinitis is not suitable (AU)
