Ankle Block Versus Popliteal Fossa Block as Primary Anesthesia for Forefoot Surgical Procedures

Study Overview
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Brief Summary
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The purpose of this study is to compare, for the first time ever, single shot popliteal fossa blocks to ankle blocks as primary anesthesia for patients undergoing forefoot procedures. The primary outcome variable for this study is the percentage of patients that convert to general anesthesia following either a single shot popliteal fossa block or ankle block. H0: There is no difference in the percentage of patients that convert to general anesthesia between single shot popliteal fossa blocks and ankle blocks. HA: There will be a lower percentage of patients receiving a single shot popliteal fossa block that convert to general anesthesia compared to patients receiving an ankle block.

Official Title
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Ankle Block Versus Popliteal Fossa Block as Primary Anesthesia for Forefoot Surgical Procedures: A Prospective Comparison

Conditions
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Anesthesia, Forefoot Surgery

Intervention / Treatment
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* Procedure: elective forefoot surgery


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients undergoing elective forefoot surgery, including both soft-tissue and osseous procedures Exclusion Criteria: Diabetes Any form of Peripheral neuropathy Known allergy to local anesthesia Active infection
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: single shot popliteal fossa block<br> | Procedure: elective forefoot surgery<br>* Includes both soft-tissue and osseous procedures.<br>|
| Active Comparator: ankle blocks<br> | Procedure: elective forefoot surgery<br>* Includes both soft-tissue and osseous procedures.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Conversion to general anesthesia following either a single shot popliteal fossa block or ankle block | Popliteal fossa and ankle blocks are types of anesthesia used during surgery. If these methods are not effective as an anesthetic during surgery the anethesiologist will convert to general anesthesia. | Participants will be followed for the duration of the surgery, an expected average of 2 hours | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Visual Analog Pain Scale (VAS) |  | 24 hours postoperatively | 
| Patient Satisfaction |  | 48 hours postoperative | 
| Length of Post Anesthesia Care Unit (PACU) stay | Length of PACU stay is calculated from the time the patient is taken from the operative suite to PACU, ie recovery, to the time the patient leaves PACU. | Up to 6 hours postoperative | 
| Narcotic Use |  | Up to 30 days postoperative | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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forefoot surgery, Ankle Block, Popliteal Fossa Block