Please assess the completion status of the following clinical trial:

Trial Title: Functional Performance Evaluation of NU-FlexSIV Socket

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

Eligibility Criteria:
Inclusion Criteria:~* unilateral transfemoral amputation~* have used a prosthesis for two or more years~* have a residual limb that is stable in volume and free from wounds~* be physically fit enough to participate in the performance tests (Medicare Functional Classification Level K3 or K4)~* have no previous experience of the sub-ischial socket~* able to complete all visits for the duration of the protocol~Exclusion Criteria:~* have a residual limb femur of less than 5-inches~* co-morbidities that affect function, including neurologic abnormalities (e.g. neuropathic pain that would interfere with the study)~* do not speak and read English

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

Study Arms:
- NU-FlexSIV Socket (Type: ACTIVE_COMPARATOR): The Northwestern University Flexible Sub-Ischial Vacuum Socket is a novel socket design for transfemoral amputees.
- IC Socket (Type: ACTIVE_COMPARATOR): The Ischial Containment Socket is the standard of care socket design for transfemoral amputees.

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