Please assess the completion status of the following clinical trial:

Trial Title: Platelet Rich Plasma on Osteoarthritis of Knee

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~1. Age between 35 to 75 y/o.~2. Alert consciousness~3. Symptom of knee osteoarthritis persist at least 6 months and stage I or II scored by Ahlbäck grading system~4. The pain score measured by VAS at least 4 points~Exclusion Criteria:~1. Has received hyaluronic acid or steroid injection within 6 monts~2. Has received NSAIDs or steroid within one week~3. Tumor or metastasis surrounding the knee joint~4. Has received total knee replacement, major surgery in knee, rheumatoid arthritis~5. Patient who cant tolerance the balance or muscle strength test.

- Gender: ALL
- Minimum Age: 35 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- Platelet rich plasma (Type: ACTIVE_COMPARATOR): Platelet rich plasma (PRP) is a new and potential treatment for patients with kinds of musculoskeletal disorders.~Patients with bilaetral knee osteoarthritis randomized receive on dose of PRP in one knee and placebo with normal saline in the other side.
- normal saline (Type: PLACEBO_COMPARATOR): Normal saline was injected into the other side of knee as the control group.

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