Please assess the completion status of the following clinical trial:

Trial Title: Intra-articular Polyacrylamide Hydrogel in the Treatment of Gonarthrosis

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: OTHER
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~Inclusion criteria for the IA/PAAG-SI/OA/2019 study~1. Men and women over 50 years old;~2. Verified gonarthrosis according to the ACR criteria (knee pain in combination with one of the following signs: age over 50 years, crepitus in the joint or morning stiffness in the joint lasting less than 30 minutes in combination with radiographic signs of gonarthrosis);~3. II-III radiographic stage of gonarthrosis according to the Kellgren-Lawrence classification with predominant damage to the medial tibiofemoral region of the knee joint;~4. Radiographic joint space width (JSW) of the target knee joint of at least 2.5 mm.~Inclusion criteria for the IA/PAAG-SI/OA/2020 study~1. Men and women over 50 years of age;~2. Signed informed consent form by the study participant;~3. Verified gonarthrosis according to the ACR criteria (knee pain in combination with one of the following: age over 50 years, crepitus in the joint or morning stiffness in the joint lasting less than 30 minutes in combination with radiographic signs of gonarthrosis);~4. II-III radiographic stage of gonarthrosis according to the Kellgren-Lawrence classification with predominant damage to the medial tibiofemoral region of the knee joint Completion of participation in the clinical study IA/PAAG-SI/OA/2019 in the NOLTREX™ medical device group with the completion of visit 5 procedures (25 weeks).~Exclusion criteria N/A

- Gender: ALL
- Minimum Age: 50 Years
- Maximum Age: None
- Healthy Volunteers: f

Based on this trial design, predict the completion outcome and termination type (if applicable).