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MRI of skier’s Thumb: Case Report.

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拇指尺骨外側韌帶斷裂之磁振造影表現：病例報告

MRI of skier’s Thumb: Case Report

陳榮邦

Shih FC;Wu SC;Yao MS;Choi WM;Ho WP;Chan WP

摘要 拇指尺骨外側韌帶斷裂並非罕見，但少有相關的磁振造影報告。我們報告一名 46 歲女性因交通意外受傷造成右拇指疼痛及失能，磁振造影（採用 2-mm 層厚） 呈現右拇指尺骨外側韌帶斷裂後輕微回縮的殘餘韌帶纖維，但外展肌膜完整；對 照正常的左拇指則清楚表現此韌帶的走向及完整性。手術發現右拇指尺骨外側韌 帶在靠近外展肌膜近端處呈現非移位性斷裂，經縫補後 9 個月追蹤磁振造影顯示 韌帶修復完好，病人症狀已大幅改善。 Abstract

Although ulnar collateral ligament tear of the thumb is not uncommon, few reports have described this injury with magnetic resonance imaging (MRI) findings. We present a case of a 46-year-old woman who suffered from painful disability of her right thumb soon after a motorcycle accident. MRI of 2- mm slice thickness showed minimally retracted fibers of the torn ulnar collateral ligament of the right thumb, but the adductor aponeurosis was intact. A control study of the normal left thumb well delineated the course of the intact ulnar collateral ligament. Surgical findings revealed a nondisplaced ulnar collateral ligament tear near the proximal margin of the adductor aponeurosis. The ulnar collateral ligament was then repaired. Follow-up MRI at nine months after surgery showed a repaired ligament without evidence of re-tear. The patient＇s symptoms were almost subsided

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