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case_images: A) axial view of preoperative MRI showing the synovial cyst (SC) hypointense on T1; B) hyperintense on T2-weighted sequence
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case_images: MRI of the knee revealed a 48x20x12mm soft tissue mass with clear borders localized at the anterior of proximal tibiofibular joint with poor visualization of the common peroneal nerve (Figure 1).
case_images: Intraoperative appearance of the synovial cyst (SC) that infiltrates and compresses the peroneal nerve (PN)
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case_images: Intraoperatively, the cystic mass had infiltrated the common fibular nerve with dissociation of its fibers and without any real visualization of pedicle with the proximal tibiofibular joint (Figure 2).
case_images: Intraoperative view of the peroneal nerve (PN) after cyst resection
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case_images: Resection was minitious to avoid nerve injury (Figure 3).
case_images: Recurrence of the synovial cyst four months after the first surgery
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case_images: Unfortunately the cyst recidivated four months later with reappearance of a larger mass of about 5cm at the same localization (Figure 4).
case_images: Intraoperative view showing total resection of the cyst and the dissociation of the peroneal nerve (PN) fibers
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case_images: Surgical resection removed the entire cyst and the pedicle was found and cut, the nerve appears continuous but its fibers are dissociated (Figure 5).
case_images: PMC6945372_02
case_images: Axial view of preoperative MRI showing the multicompartmental synovial cyst (SC)
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case_images: MRI showed an 85x24x10mm multi-compartmental cystic formation at the anterolateral side of fibular head and communicating at its superior pole with the proximal tibiofibular joint by a thin 2mm pedicle (Figure 6).
case_images: Intraoperative view showing the close contact between the synovial cyst (SC) and the peroneal nerve (PN)
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case_images: Intraoperatively, cystic mass that adhered to and compressed the common peroneal nerve (Figure 7) was totally excised and the pedicle was found and cut.