Please assess the completion status of the following clinical trial:

Trial Title: Efficacy of an Intra-articular Injection of Botulinum Toxin A Associated With Splinting for Base-of-thumb Osteoarthritis

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE2/PHASE3
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Age ≥ 18 years old~* Pain intensity on a self-administered 11-point pain numeric rating scale ≥ 30~* Pain involving the base-of-thumb~* X-ray evidence of base-of-thumb osteoarthritis with at least 2 of the 4 following items involving the trapeziometacarpal joint : osteophytes, joint space narrowing, subchondral bone sclerosis or subchondral cysts~* 1990 American College of Rheumatology classification criteria for hand osteoarthritis adapted to base-of-thumb osteoarthritis~* Medical examination~* Written consent~* Health insurance~* For women of childbearing age, a negative urinary pregnancy test~Exclusion Criteria:~* History of thumb surgery~* History of inflammatory or crystal-associated rheumatic disease~* Neurological disorders involving the hands other than carpien canal syndrom~* Collagen disorders involving the hands : Dupuytren, Marfan or Ehlers-Danlos diseases~* Osteoarthritis predominating at the scaphotrapezial joint on X-Ray~* Hand or wrist trauma ≤ 2 months~* Hand or wrist intra-articular injections ≤ 2 months~* Contra-indication to botulinum toxin A injection or to splinting~* Cognitive or behavioral disorders making the assessment impossible~* Participant unable to speak, read and write french~* Bilateral BTOA without predominant symptomatic side~* Pregnancy and breast feeding~* Persons referred to in Articles L 1121-5; 6; 8; 9 of the Public Health Code (protected minors or adults, guardianship or trusteeship, etc.)~* Patient with epilepsy

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

Study Arms:
- Intra-articular botulinum toxin A and splinting (Type: EXPERIMENTAL): Ultrasound-guided injection of 50 Allergan Unities of botulinum toxin A (Botox®, Allergan) resuspended in 1 ml of saline in the trapeziometacarpal joint and custom-made thermoformed plastic splint to be worn for 48 hours after intra-articular injection then nightly
- Intra-articular saline and splinting (Type: ACTIVE_COMPARATOR): Ultrasound-guided injection of 1 ml of saline in the trapeziometacarpal joint and custom-made thermoformed plastic splint to be worn for 48 hours after intra-articular injection then nightly

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