The isolated posterior malleolar fracture and syndesmotic instability: A case report and review of the literature |
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Institution: | 1. Traumacenter Utrecht, Utrecht, The Netherlands;2. Department of Surgery, University Medical Center Utrecht, Utrecht, The Netherlands;3. Department of Surgery, St Antonius Hospital Nieuwegein, The Netherlands;4. Department of Orthopedic Surgery, University Medical Center Utrecht, Utrecht, The Netherlands |
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Abstract: | IntroductionAnkle fractures are among the most common type of fractures in the lower extremity. A posterior malleolar fracture is frequently part of a more complex ankle fracture and only in rare cases it occurs as isolated injury. Posterior malleolar fractures often occur with associated injuries, such as a Maisonneuve fracture or with bi- or trimalleolar ligamentous injuries. Knowledge about these associated injuries is essential to prevent missed diagnoses. The aim of this article is to describe the isolated posterior malleolar fracture, the possible associated injuries, the diagnostic work-up and therapeutic consequences.Presentation of caseWe present a case of a 26-year-old male patient who sustained an isolated posterior malleolar fracture with 4.5 years follow-up.DiscussionIsolated fractures of the posterior malleolus are uncommon injuries. Diagnosis, treatment and outcome can seldom be extracted from large series. However, several cases have been described in literature, which we have summarized.ConclusionThis case report and literature review shows that isolated posterior malleolar fractures might occur as part of a more complex ankle injury, in combination with a fracture of the lower leg or after high energy trauma. Physicians should be aware of these associated injuries. Diagnostic work-up should include X-rays of the knee and lower leg and a CT scan of the ankle. If diagnosed and treated properly, isolated posterior malleolar fractures have a good long-term functional outcome. |
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Keywords: | Ankle fracture Earle’s fracture Syndesmotic fixation Unimalleolar fracture Volkmann’s fracture Posterior malleolar fracture |
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