Carpal Tunnel Syndrome patients undergoing carpal tunnel release surgery performed by the PI will receive intra-operative injections of bupivacaine (Marcaine). Two groups of patients will be randomly selected and will receive either 10cc or 20cc of injection. Their post-operative pain scores and usage of post-operative pain medication will be recorded and analyzed.

This randomized control trial will be conducted at the USF Department of Orthopaedics at the USF Health Morsani Center after receiving approval from the USF Institutional Review Board. Patients will be evaluated Carpal Tunnel Syndrome and screened as candidates for Carpal Tunnel Release surgery, following the inclusion and exclusion criteria. The Medical Record Number (MRN) will be used to randomly assign into treatment interventions. Group 1 and group 2 will receive 10cc and 20cc of intra-operative intra-carpal tunnel anesthetic injection, respectively. Postoperatively, patients will be prescribed an opioid pain medication in congruence with current standard medical practice. Patients will be contacted at 24-hours, 48-hours, 72-hours, and at 2-week clinic follow-up by research staff and will be evaluated for pain levels through the LIKERT scale and pain management through use of prescribed and supplemental pain medications. All data will be analyzed through SPSS v25.

Inclusion Criteria:

• patient must be undergoing carpal tunnel release surgery performed by PI
• EMG or Ultrasound diagnosed carpal tunnel syndrome

Exclusion Criteria:

• co-musculoskeletal injuries