Please assess the completion status of the following clinical trial:

Trial Title: Post-market Follow up Study of the 'BPK-S Integration' UC as Primary Implant in the Variants CoCr or Ceramic

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

Eligibility Criteria:
Inclusion Criteria:~* Congenital or acquired knee joint defects/deformation~* Defects or malfunction of the knee joint~* Arthrosis (degenerative, rheumatic)~* Post-traumatic arthritis~* Symptomatic knee instability~* Reconstruction of flexibility~* Patients with metal hypersensitivity (ceramic tibia/femur)~Exclusion Criteria:~* Illnesses which can be treated without using a knee joint implant.~* Acute or chronic infections near the implantation~* Systemic diseases and metabolic disorders~* Serious osteoporosis~* Serious damage to the bone structures that impedes stable implantation of the implant components~* Diseases that impair bone growth, e.g. cancer, renal dialysis, osteopenia, etc.~* Bone tumors in the area of the implant anchoring~* Obesity or overweight of the patient~* Overload of the knee implant to be expected~* Abuse of medication, drug abuse, alcoholism or mental disease~* Pregnancy~* Lack of patient cooperation~* Sensitivity to foreign matter in the implant materials~* Patients under the age of 18~* Patients participating in another trial

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Ceramic (Type: None): Patients receiving BPK-S Integration UC implant made from BIOLOX delta ceramic
- CoCr (Type: None): Patients receiving BPK-S Integration UC implant made from CoCr (metal)

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