Wide-awake local anesthesia no tourniquet and dexamethasone (WALANT-D) for modified Camitz opponens plasty in severe carpal tunnel syndrome-a retrospective study of 30 cases

Abstract

BackgroundTo analyze the outcome of modified Camitz opponens plasty using the wide-awake local anesthesia no tourniquet with dexamethasone (WALANT-D) technique in severe carpal tunnel syndrome (CTS). MethodsA retrospective review was performed in 30 hands of 27 patients who underwent Camitz opponens plasty for severe CTS between 2019 and 2021. All patients had 8 mg of dexamethasone mixed with WALANT. Preoperative active palmar abduction, grip strength, side, and pulp pinch strength, Kapandji score, and electrophysiological assessment of compound muscle action potential (CMAP) for abductor pollicis brevis (APB) were compared with the postoperative values. The palmaris longus had dual insertion into the abductor pollicis brevis and extensor expansion. The time interval of post-operative pain-free was noted. The Disabilities of the Arm, Shoulder, and Hand (DASH) and Carpal Tunnel Syndrome instrument (CTSI) also assessed the functional outcome. ResultsThe mean age of patients was 35 years (range 32–58 years). There were five male and 22 female patients. Of the female patients, three females had severe bilateral CTS. Twenty right and ten left hands were affected. The mean follow-up of our study was 12.5 months (range 10–14 months). The patients were pain-free for an average of 19.5 h postoperatively. There was a significant improvement in the thumb palmar abduction, grip strength, side, and pulp pinch strength, DASH score, CTSI, and APB-CMAP (p < 0.05) at the final follow-up. ConclusionsModified Camitz opponens plasty with a dual insertion into APB and extensor expansion effectively improves thumb opposition and daily activities. The tendon tensioning, checking the pulley impingement, appreciation of active movements, and a comfortable patient operative experience are advantages of the WALANT. Adding dexamethasone as an adjuvant to WALANT prolongs the analgesia and duration of the nerve block. Level of evidenceIV, Retrospective case study.