| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated  | 
Osteoarthritis
 
 The medical condition investigated in the CL3-12911-018 study was osteoarthritis. The applied CL3-12911-040 trial, CL3-12911-018 follow-up study, is thus performed in osteoarthritic patients. | 
 
 
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| E.1.1.1 | Medical condition in easily understood language  | 
 | 
| E.1.1.2 | Therapeutic area  | Diseases [C] - Musculoskeletal Diseases [C05] | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| E.1.2 | Version  | 17.0 | 
 
| E.1.2 | Level  | PT | 
 
| E.1.2 | Classification code  | 10031161 | 
 
| E.1.2 | Term  | Osteoarthritis | 
 
| E.1.2 | System Organ Class  | 10028395 - Musculoskeletal and connective tissue disorders | 
 
 
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| E.1.3 | Condition being studied is a rare disease  |  No  | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial  | 
| To collect data on knee joint replacement procedures or procedures practiced in the knee (arthroscopy, osteotomy or other) over 5 years in patients with knee osteoarthritis having participated in the CL3-12911-018 study and having received at least one year (365 days) of CL3-12911-018 study treatment (Strontium Ranelate 1g/2g or placebo).  | 
 
 
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| E.2.2 | Secondary objectives of the trial  |  | 
| E.2.3 | Trial contains a sub-study  |  No  | 
| E.3 | Principal inclusion criteria  | 
| Patients included in the CL3-12911-018 study and having received the CL3-12911-018 study treatment (Strontium Ranelate 1g/2g or placebo) for at least one year (at least 365 days of treatment during the CL3-12911-018 study). | 
 
 
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| E.4 | Principal exclusion criteria | 
Unlikely to cooperate in the study (such as patients suffering from dementia).
 Patients unable to provide the information requested by the study.
 Refusal to provide the study’s informed consent. | 
 
 
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| E.5 End points | 
| E.5.1 | Primary end point(s) | 
- Knee joint replacement in the target knee (knee followed in the CL3-12911-018 study).
 - Knee surgery or other procedure (arthroscopy, osteotomy or other).
 
 | 
 
 
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| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
 | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis |  No  | 
| E.6.2 | Prophylaxis |  No  | 
| E.6.3 | Therapy |  No  | 
| E.6.4 | Safety |  No  | 
| E.6.5 | Efficacy |  No  | 
| E.6.6 | Pharmacokinetic |  No  | 
| E.6.7 | Pharmacodynamic |  No  | 
| E.6.8 | Bioequivalence |  No  | 
| E.6.9 | Dose response |  No  | 
| E.6.10 | Pharmacogenetic |  No  | 
| E.6.11 | Pharmacogenomic |  No  | 
| E.6.12 | Pharmacoeconomic |  No  | 
| E.6.13 | Others |  Yes  | 
| E.6.13.1 | Other scope of the trial description | 
| Follow-up study without treatment administration | 
 
 
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| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) |  No  | 
| E.7.1.1 | First administration to humans |  No  | 
| E.7.1.2 | Bioequivalence study |  No  | 
| E.7.1.3 | Other |  No  | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) |  No  | 
| E.7.3 | Therapeutic confirmatory (Phase III) |  Yes  | 
| E.7.4 | Therapeutic use (Phase IV) |  No  | 
| E.8 Design of the trial | 
| E.8.1 | Controlled |  No  | 
| E.8.1.1 | Randomised |  No  | 
| E.8.1.2 | Open |  No  | 
| E.8.1.3 | Single blind |  No  | 
| E.8.1.4 | Double blind  |  No  | 
| E.8.1.5 | Parallel group |  No  | 
| E.8.1.6 | Cross over  |  No  | 
| E.8.1.7 | Other |  Yes  | 
| E.8.1.7.1 | Other trial design description | 
| Follow-up study without treatment administration | 
 
 
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| E.8.2 |  Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) |  No  | 
| E.8.2.2 | Placebo  |  No  | 
| E.8.2.3 | Other |  No  | 
| E.8.2.4 | Number of treatment arms in the trial | 0 | 
| E.8.3 | 
                                The trial involves single site in the Member State concerned
                             |  No  | 
| E.8.4 |  The trial involves multiple sites in the Member State concerned  |  Yes  | 
| E.8.4.1 | Number of sites anticipated in Member State concerned | 3 | 
| E.8.5 | The trial involves multiple Member States |  Yes  | 
| E.8.5.1 | Number of sites anticipated in the EEA | 71 | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA |  Yes  | 
| E.8.6.2 | Trial being conducted completely outside of the EEA |  No  | 
| E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned | 
| Australia | 
 
| Canada | 
 
| Russian Federation | 
 
 
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| E.8.7 | Trial has a data monitoring committee |  No  | 
| E.8.8 | 
                        Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial
                     | 
| Last Visit Last Participant as stated in the protocol. | 
 
 
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| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years |  | 
| E.8.9.1 | In the Member State concerned months |  | 
| E.8.9.1 | In the Member State concerned days |  | 
| E.8.9.2 | In all countries concerned by the trial years | 5 | 
| E.8.9.2 | In all countries concerned by the trial months | 7 | 
| E.8.9.2 | In all countries concerned by the trial days | 0 |