Fracture, Ligament Injury
Conditions
Keywords
Brachial plexus block, Suprascapular nerve block
Brief summary
Patients who receive the lateral and sagittal infraclavicular block (LSIB) tend to supinate their hand and forearm which may hamper optimal positioning for surgery of the dorsal side of the hand. The investigators think that this supination is caused by lateral rotation in the shoulder. The main lateral rotator of the shoulder is the infraspinatus muscle, which is innervated by the suprascapular nerve (SSN).The investigators hypothesized that optimal positioning of the hand for surgery on the dorsal side of the hand may be achieved by performing a SSN block (SSNB) in addition to the LSIB.
Detailed description
According to the hypothesis the investigators will perform a double blind , placebo controlled study to answer the research question above.
Interventions
PROCEDURELSIB + SSNB
Patients will receive LSIB (31 ml ropivacaine 7.5 mg/ml)+ SSNB (4 ml Ropivacaine 5 mg/ml) or LSIB (31 ml ropivacaine 7.5 mg/ml)+ SSNB (4 ml placebo, saline)
Sponsors
University of Tromso
University Hospital of North Norway
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No
Inclusion criteria
* Patients with American Society of Anesthesiologists physical status (ASA) I- III * age between 18 and 70 years * body mass index between 20 and 36 kg/m2 scheduled for elective hand surgery.
Exclusion criteria
We will measure the angle between wrist and horizontal plane while the patient is supine and the extended arm 75° abducted. * Patient who are not able to pronate the hand ≤15° before block performance, will be excluded from the study. * Patients will also be excluded if they are pregnant, have contraindications to regional anesthesia, coagulation disorder, allergy to local anesthetics (LA), atrioventricular block, peripheral neuropathy or drug-treated diabetes. * Patients using other anticoagulation drugs than acetylsalicylic acids or dipyridamol will be excluded.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Wrist angle | 30 minutes | The investigators will assess the wrist angle 30 minutes after the two blocks (LSIB + SSNB) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Satisfaction score | 3 hours | The investigators will ask the surgeons about his/her satisfaction with the hand position during surgery. |
Countries
Norway
Outcome results
None listed