Collagenase treatment of Dupuytren's contracture using a modified injection method

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title = "Collagenase treatment of Dupuytren's contracture using a modified injection method",
abstract = "Background and purpose - Treatment of Dupuytren's contracture (DC) with collagenase Clostridium histolyticum (CCH) consists of injection followed by finger manipulation. We used a modified method, injecting a higher dose than recommended on the label into several parts of the cord, which allows treatment of multiple joint contractures in 1 session and may increase efficacy. We studied the occurrence of skin tears and short-term outcome with this procedure. Patients and methods - We studied 164 consecutive hands with DC, palpable cord, and extension deficit of >= 20 degrees in the metacarpophalangeal (MCP) and/or proximal interphalangeal (PIP) joint (mean patient age 70 years, 82{\%} men). A hand surgeon injected all the content of 1 CCH vial (approximately 0.80 mg) into multiple spots in the cord and performed finger extension under local anesthesia after 1 or 2 days. A nurse recorded skin tears on a diagram and conducted a standard telephone follow-up within 4 weeks. A hand therapist measured joint contracture before injection and at a median of 23 (IQR: 7-34) days after finger extension. Results - A skin tear occurred in 66 hands (40{\%}). The largest diameter of the tear was <= 5 mm in 30 hands and > 10 mm in 14 hands. Hands with skin tear had greater mean pretreatment MCP extension deficit than those without tear: 59 degrees (SD 26) as opposed to 32 degrees (SD 23). Skin tear occurred in 21 of 24 hands with MCP contracture of >= 75 degrees. All tears healed with open-wound treatment. No infections occurred. Mean improvement in total (MCP + PIP) extension deficit was 55 degrees (SD 28). Interpretation - Skin tears occurred in 40{\%} of hands treated with collagenase injections, but only a fifth of them were larger than 1 cm. Tears were more likely in hands with severe MCP joint contracture. All tears healed without complications. Short-term contracture reduction was good.",
author = "Isam Atroshi and Jesper Nordenskj{\"o}ld and Anna Lauritzson and Eva Ahlgren and Johanna Waldau and Markus Walden",
year = "2015",
doi = "10.3109/17453674.2015.1019782",
language = "English",
volume = "86",
pages = "310--315",
journal = "Acta Orthopaedica",
issn = "1745-3682",
publisher = "Taylor & Francis",
number = "3",