Please assess the completion status of the following clinical trial:

Trial Title: Relationship Between Constitutional Varus Knee and Patellofemoral Pain

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

Eligibility Criteria:
Inclusion Criteria:~* Patellofemoral pain during physical activities such as running, jumping, squatting, and going up or down stairs for at least 4 weeks.~* The onset of pain is required to be atraumatic in nature.~* Exhibit two of the following clinical criteria on assessment: pain on direct compression of the patella against the femoral condyles with the knee in full extension, tenderness of the posterior surface of the patell on palpation, pain on resisted knee extension, and pain with isometric quadriceps muscle contraction against suprapatellar resistance with the knee in 15° of flexion.~* Negative findings in the examination of knee ligaments, menisci, bursae, synovial plicae, Hoffa's fat pad, iliotibial band, and the hamstring, quadriceps, and patellar tendons and their insertions.~Exclusion Criteria:~* With patellofemoral instability, or With other knee diagnoses.~* Any previous surgery or severe trauma in the affected limb.~* Inflammatory joint disease or tumors in the affected limb.

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: 35 Years
- Healthy Volunteers: t

Study Arms:
- The study group (Type: None): The participants with patellofemoral pain.
- The control group (Type: None): The participants without patellofemoral pain.

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