Please assess the completion status of the following clinical trial:

Trial Title: Triathlon® Partial Knee Replacement (PKR) Outcomes Study

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* The subject is a male or non-pregnant female 21-75 years of age at the time of enrollment.~* The subject requires a primary cemented unicompartmental knee replacement.~* The subject has a diagnosis of osteoarthritis (OA) or posttraumatic arthritis (TA).~* The subject has clinically intact cruciate and collateral ligaments and no ligamentous instability is present.~* The subject has less than 10 degrees of flexion contracture and greater than 90 degrees of flexion.~* The subject's preoperative mechanical alignment is less than 15 degrees of varus and 15 degrees of valgus.~* The subject has signed the Institutional Review Board (IRB) approved study specific Informed Patient Consent Form.~* The subject is willing and able to comply with postoperative scheduled clinical and radiographic evaluations and rehabilitation.~Exclusion Criteria:~* The subject has inflammatory arthritis or avascular necrosis(AVN).~* The subject is obese, BMI \> 35.~* The subject has a history of total or unicompartmental (contralateral compartment and/or patellofemoral joint) reconstruction of the affected joint.~* The subject has a history of anterior cruciate ligament (ACL) reconstruction.~* The subject has had a high distal femoral, or proximal tibial osteotomy.~* The subject has a mental, neuromuscular or neurosensory disorder, which would create an unacceptable risk of prosthesis instability, prosthesis fixation failure, or complications in post-operative care and/or limit the ability to assess the performance of the device.~* The subject has a systemic or metabolic disorder leading to progressive bone deterioration that the surgeon feels would affect the overall outcome of the study.~* The subject is immunologically suppressed, or is receiving chronic steroids (\>30 days duration).~* The subject has a known sensitivity to device materials.~* The subject's bone stock is compromised by disease and/or infection which cannot provide adequate support and/or fixation to the prosthesis.~* The subject's bone stock is compromised by a prior implantation which cannot provide adequate support and/or fixation to the prosthesis.~* The subject has an active or suspected latent infection in or about the knee joint.~* The subject is a prisoner.

- Gender: ALL
- Minimum Age: 21 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- Triathlon PKR (Type: OTHER): All subjects enrolled will receive the Triathlon PKR device.

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