Please assess the completion status of the following clinical trial:

Trial Title: Drug Delivery Devices for Osteomyelitis

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:~* The retrospective study included patients with chronic post-traumatic or postoperative osteomyelitis and excluded patients suffering from hematogenous osteomyelitis or acute post-traumatic or postoperative osteomyelitis.~Exclusion Criteria:~* Other kinds of osteomyelitis.

- Gender: ALL
- Minimum Age: 15 Years
- Maximum Age: 68 Years
- Healthy Volunteers: f

Study Arms:
- combination therapy group (Type: None): antibiotic-loaded calcium sulfate and antibiotic-loaded polymethyl methacrylate (PMMA) and Vancomycin
- PMMA group (Type: None): antibiotic-loaded polymethyl methacrylate and Vancomycin

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