Context: Deep vein thrombosis (DVT) is a well-known complication of spinal cord injury (SCI). Low-molecular-weight heparin (LMWH) may be used in SCI patients who develop DVT, but can lead to subcutaneous bleeding. If subcutaneous bleeding occurs, then lymphedema, cellulitis, muscle or tendon tearing, or baker’s cyst rupture should be considered in the differential diagnosis.

Findings: Herein, we present a 61-year-old female patient who was hospitalized for rehabilitation due to paraplegia, and used LMWH due to DVT development. The patient suddenly developed pain, swelling, and discoloration of the left lower extremity. Although subcutaneous hemorrhage was considered initially, ultrasound and MRI revealed a ruptured Baker’s cyst. In addition to supportive therapy, ultrasound-guided aspiration was performed.

Conclusion/Clinical Relevance: In this report, we present a case of clinically severe Baker’s cyst rupture, which occurred in the lower extremity of a SCI patient using LMWH due to DVT in the same extremity. To our knowledge, no similar cases have been reported.

背景：深静脉血栓形成（DVT）是众所周知的脊髓损伤（SCI）并发症。低分子肝素 (LMWH) 可用于发生 DVT 的 SCI 患者，但可导致皮下出血。如果发生皮下出血，则鉴别诊断应考虑淋巴水肿、蜂窝组织炎、肌肉或肌腱撕裂或贝克氏囊肿破裂。

结果：在此，我们介绍了一名 61 岁的女性患者，她因截瘫住院接受康复治疗，并因 DVT 发展而使用 LMWH。患者突然出现左下肢疼痛、肿胀和变色。虽然最初考虑了皮下出血，但超声和 MRI 显示贝克氏囊肿破裂。除了支持治疗外，还进行了超声引导下的抽吸。

结论/临床相关性：在本报告中，我们介绍了一例临床上严重的贝克氏囊肿破裂病例，该病例发生在一名使用 LMWH 的 SCI 患者的下肢，原因是同一肢有 DVT。据我们所知，没有类似案例的报道。