Please assess the completion status of the following clinical trial:

Trial Title: The Press Fit Condylar (P.F.C.) Sigma Rotating Platform (RP) TC3 Revision Knee in Revision Knee Arthroplasty

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE4
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Male or female subjects over the age of 21 years (and skeletally mature).~* Subjects who are able to give voluntary, written informed consent to participate in this investigation and from whom consent has been obtained.~* Subjects who, in the opinion of the Investigator, are able to understand this investigation, co-operate with the investigational procedures and are willing to return to the hospital for all the required post-operative follow-ups.~* Subjects whose primary diagnosis includes non-inflammatory or inflammatory degenerative joint disease.~* Subjects who require revision of any previous knee arthroplasty.~* Subjects who, in the opinion of the Clinical Investigator, are considered to be suitable for treatment with the investigation device, according to the indications specified in the package insert leaflet.~* Subjects who require revision of the femoral and/or tibial components. (Both components must be replaced as part of the study.)~Exclusion Criteria:~* Subjects who, in the opinion of the Investigator, have an existing condition that would compromise their participation and follow-up in this study (including malignancy, severe osteoporosis or disabling musculoskeletal problems).~* Women who are pregnant.~* Subjects who are known drug or alcohol abusers or with psychological disorders that could affect follow-up care or treatment outcomes.~* Subjects who have participated in a clinical study with an investigational product in the last 60 days (excluding any primary knee replacement study).~* Subjects who are currently involved in any injury litigation claims.~* Subjects with global instability, deficient extensor mechanism or severe bone loss (eg. due to fracture or tumour resection).~* Subjects who have had their contralateral knee replaced within the previous 6-month period.

- Gender: ALL
- Minimum Age: 21 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- PFC Sigma RP TC3 Revision Knee System (Type: EXPERIMENTAL): Revision knee surgery with the PFC Sigma RP TC3 Revision Knee System (mobile bearing).

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