Maintenance, Repair and Operations or Maintenance, Repair and Overhaul (MRO), is fixing any sort of mechanical or electrical device should it get out of order or broken (repair) as well as performing the routine actions which keep the device in working order (maintenance) or prevent trouble from arising (preventive maintenance).
The European Federation of National Maintenance Societies defines maintenance as:
All actions which have as an objective to retain an item in or restore it to, a state in which it can perform the required function. The actions include the combination of all technical and corresponding administrative, managerial, and supervision actions.
More on [ Maintenance, Repair and Operations ]

Articular Engineering, LLC - Transplantation tissue (Alginate Recovered Chondrocytes) for treatment of damaged or diseased cartilage and intervertebral disc disorders.
Autologous Chondrocyte Implantation (ACI) - A comprehensive summary of the autologous chondrocyte implantation technique for articular cartilage repair.
Cell Transplantation Innovations Ltd. - Biotechnology company working on Autologous Chondrocyte Implantation techniques, contains useful background information.
CellCoTec Cartilage Repair Technology - Develops a single surgery cell-based therapy for cartilage repair. The company employs an autologous chondrocyte implantation technique.
Mercy Tissue Engineering - A laboratory with useful information relating to Autologus Chondrocyte Implantation
Meta Description: [ Cultivating human cells to heal knee injuries through tissue engineering. This technique focuses on articular cartilage with the laboratory based in Melbourne, Australia. Also known as Autologous Chondrocyte Implantation (ACI). ]
UCSD Cartilage Tissue Engineering Lab - Cartilage growth, aging, degeneration, repair --- Department of Bioengineering and Whitaker Institute of Biomedical Engineering, University of California, San Diego.
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