Please assess the completion status of the following clinical trial:

Trial Title: Effect of Protein Supplement on Paraspinal Muscles in Spine Surgery

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Adult patients 18-65 years~* Body mass index 18.5-30~* Candidate for the elective posterior spine fusion~* Without history of severe liver disorder~* Without history of Kidney disorder~* Without history of diabetes~* Without history of trauma and fracture of the vertebral~* Without history of osteoporosis~* Without history of Gastrointestinal malabsorption~* Without history of Parathyroid gland disorders~* Without taking medications that affect the metabolism of bone, such as calcitonin, bisphosphonate, corticosteroid~* No smoking~* Without history of neuromuscular diseases such as dystrophies and neurological disorders~Exclusion Criteria:~* Allergy or intolerance to protein or maltodextrine supplement~* Unwillingness to continue cooperation

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: f

Study Arms:
- protein supplement (Type: EXPERIMENTAL): Intervention patients will be received protein diet (1.2 g/kg/day) and protein supplement (36 g/day) for 1 month after surgery.
- maltodextrin (Type: PLACEBO_COMPARATOR): Control patients will be received protein diet (1.2 g/kg/day) and maltodextrin for 1 month after surgery.

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