Congenital bilateral humeroradial synostosis (HRS) is a rare condition. It is generally divided into 2 categories. In the first group, which is mainly sporadic, additional upper limb hypoplasia typically coexists. In the second group, which is classically familial, HRS is commonly an isolated upper extremity anomaly. HRS can lead to variable degrees of functional disability. The clinical case reported here illustrates a possibly avoidable presentation of this uncommon condition. In this case report, we present a 6-week-old male who presented with bilateral radius fractures. Radiography revealed congenital HRS at both elbows. No other associated congenital abnormalities were detected, and there was no family history of similar conditions in any first-degree relatives. In cases of congenital HRS, movement at the elbow joint is not possible. Parents who are unaware of this information might try to straighten their infant’s elbows, which in turn may result in fractures of the proximal radius. Hence, early diagnosis and proper parental education could prevent fractures as a sequela of HRS.
Case Rep Orthop Res 2021;4:29–32

中文翻译：

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双侧先天性肱骨Syn骨伴双侧近端Rad骨骨折：一例报告

先天性双侧肱骨syn骨鼻窦炎（HRS）是一种罕见病。它通常分为2类。在主要是零星的第一组中，通常合并有其他上肢发育不全。在第二组，典型地是家族性的，HRS通常是孤立的上肢异常。HRS可能导致不同程度的功能障碍。此处报道的临床病例说明了这种罕见疾病的可能避免的表现。在此病例报告中，我们介绍了一名6周大的男性，其患有双侧radius骨骨折。影像学检查发现两个肘部均患有先天性HRS。没有发现其他相关的先天性异常，并且在任何一级亲属中都没有类似疾病的家族史。对于先天性HRS，无法在肘关节移动。不了解此信息的父母可能会试图拉直婴儿的肘部，从而可能导致近端radius骨骨折。因此，早期诊断和适当的父母教育可以防止骨折是HRS的后遗症。
Case Rep Orthop Res 2021; 4：29–32