Abstract
Extensor tenosynovitis of the wrist can be due to rheumatologic, metabolic, or traumatic causes. Extensor tendon rupture can occur in untreated cases especially in rheumatoid arthritis. Open synovectomy requires extensive soft tissue dissection and incision of the extensor retinaculum. Endoscopic synovectomy is a minimally invasive approach that can preserve the integrity of the extensor retinaculum of the wrist.
De Quervain’s tendonitis is a stenosing tenosynovitis of the first dorsal compartment involving the Extensor Pollicis Brevis (EPB) and Abductor Pollicis Longus (APL) tendons. Ultrasound has recently been found to provide an accurate method of diagnosis as well as identifying an accessory compartment which could influence treatment. When injections are given the results are typically improved with ultrasound guidance. The typical open treatment was first published by Fritz de Quervain in 1885. The endoscopic technique has recently been described using both a one-portal and a two-portal technique with excellent results.
Stenosing tenosynovitis of extensor carpi ulnaris tendon most often results from repetitive movements of the tendon along the narrow fibro-osseous canal of the sixth extensor compartment. When conservative treatment fails to relieve the symptoms, surgical release of the retinacular sheath of the sixth extensor compartment is the definitive treatment. Endoscopic release is a minimally invasive approach that provides an alternative to open release. Apart from much less soft tissue dissection, it preserves the extensor retinaculum.
The corresponding author of Sect. 9.1 is Tun Hing Lui, E-mail: luithderek@yahoo.co.uk
The corresponding author of Sect. 9.2 is Michael J. Fitzmaurice, E-mail: DrFitz@Fitzhand.com
The corresponding author of Sect. 9.3 is Tun Hing Lui, E-mail: luithderek@yahoo.co.uk
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Li, C.H., Fitzmaurice, M.J., Ng, S., Lui, T.H. (2021). Extensor Tendoscopy. In: Lui, T.H. (eds) Arthroscopy and Endoscopy of the Hand, Wrist and Elbow. Springer, Singapore. https://doi.org/10.1007/978-981-16-4142-8_9
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