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Trigger finger at the wrist caused by an intramuscular lipoma within the carpal tunnel:A case report

World Journal of Clinical Cases 2021年第25期9卷 7564-7571页

作者： Chao Huang Hong-Juan Jin De-Biao Song Zhe Zhu Heng Tian Ze-Hui Li Wen-Rui Qu Rui Li Department of Hand Surgery The Second Hospital of Jilin UniversityChangchun 130041Jilin ProvinceChina Department of Orthopaedics West China Hospital of Sichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Plastic and Reconstructive Surgery The First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina Department of Emergency and Critical Care Medicine The Second Hospital of Jilin UniversityChangchun 130012Jilin ProvinceChina

BACKGROUND Trigger finger at the wrist,which occurs with finger movement,is an uncommon *** reports describing cases of trigger finger at the wrist have been ***,we present a case of an intramuscular lipoma arising from an anomalous flexor digitorum muscle belly in a 48-year-old female patient causing painful finger triggering at the wrist and carpal tunnel syndrome(CTS).CASE SUMMARY A 48-year-old woman with complaints of a catching sensation during wrist motion and a progressive tingling sensation on the palmar aspect of the right hand for approximately 2 years was referred to our *** of the index to middle finger was evident with a palpable and audible clunk over the carpal tunnel during passive ***’s sign was positive over the carpal tunnel of the right wrist with a positive Phalen’s *** conduction studies of the median nerve demonstrated a right *** examination revealed a 2.5 cm×2.0 cm subcutaneous hyperechoic mass with no obvious blood flow at the wrist of the right *** excision of the tumor and muscle mass led to a resolution of the patient’s symptoms,and any triggering or discomfort *** patient has had no evidence of recurrence at more than 1 year of *** Triggering of the fingers at the wrist is rare. It must be noted that there are manypossible causes and types of triggering or clicking around the wrist. Accuratediagnosis is mandatory to avoid inaccurate treatment of patients with triggerwrist. During the diagnosis and treatment of CTS, attention should be paid to thevariation of tendon tissue in the carpal tunnel, to avoid only focusing on therelease of transverse carpal ligament and ignoring the removal of anomalousmuscle belly.

关键词： Intramuscular lipoma Trigger finger muscle belly Flexor digitorum superficialis Treatment Case report

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