{"id":2005,"date":"2025-03-24T14:18:11","date_gmt":"2025-03-24T14:18:11","guid":{"rendered":"https:\/\/suzhouyoubest.com\/?p=2005"},"modified":"2025-03-24T14:18:14","modified_gmt":"2025-03-24T14:18:14","slug":"rare-bilateral-distal-clavicle-fractures-characteristics-and-treatment-options","status":"publish","type":"post","link":"https:\/\/suzhouyoubest.com\/zh\/rare-bilateral-distal-clavicle-fractures-characteristics-and-treatment-options\/","title":{"rendered":"Rare Bilateral Distal Clavicle Fractures: Characteristics and Treatment Options"},"content":{"rendered":"

Clavicle fractures account for 3%\u20135% of all adult fractures<\/strong> and approximately 32% of shoulder girdle fractures<\/strong>. Among these, the distal third of the clavicle<\/strong> is particularly susceptible due to its biomechanical vulnerabilities. Although bilateral distal clavicle fractures<\/strong> are extremely rare, they present unique challenges in terms of diagnosis and treatment. This article explores the key features of bilateral distal clavicle fractures, their classifications, and the optimal treatment strategies.<\/p>\n\n\n\n

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Understanding Distal Clavicle Fractures<\/strong><\/h2>\n\n\n\n

The distal third of the clavicle plays a critical role in shoulder stability<\/strong>, largely due to the coracoclavicular (CC) ligaments<\/strong>, which include the trapezoid<\/strong> and conoid ligaments<\/strong>. Fractures in this region can compromise the acromioclavicular (AC) joint<\/strong> and lead to shoulder girdle instability<\/strong>, especially if the CC ligaments are disrupted.<\/p>\n\n\n\n

Mechanism of Injury<\/strong><\/h3>\n\n\n\n

Distal clavicle fractures often result from:<\/p>\n\n\n\n

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  • Direct trauma<\/strong>\u00a0(e.g., motor vehicle accidents, falls).<\/li>\n\n\n\n
  • Indirect trauma<\/strong>, such as a fall onto an outstretched arm with the shoulder in abduction.<\/li>\n<\/ul>\n\n\n\n

    Classification Systems<\/strong><\/h3>\n\n\n\n

    The Neer classification<\/strong> is widely used for distal clavicle fractures:<\/p>\n\n\n\n

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    1. Type I:<\/strong>\u00a0Fractures distal to the CC ligaments with minimal displacement.\n
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      • Typically treated conservatively.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • Type II:<\/strong>\u00a0Fractures medial to the CC ligaments, leading to displacement of the medial fragment.\n
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        • Subtypes:\n
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          • IIA:<\/strong>\u00a0Both CC ligaments remain attached to the distal fragment.<\/li>\n\n\n\n
          • IIB:<\/strong>\u00a0Only the trapezoid ligament remains attached, while the conoid ligament is disrupted, increasing the risk of\u00a0nonunion<\/strong>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
          • Surgical intervention is often recommended.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
          • Type III:<\/strong>\u00a0Fractures extending into the AC joint, potentially causing\u00a0post-traumatic arthritis<\/strong>.<\/li>\n<\/ol>\n\n\n\n
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            Case Report: Bilateral Neer IIB Fractures<\/strong><\/h2>\n\n\n\n
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            A 42-year-old female<\/strong> sustained bilateral distal clavicle fractures (Neer IIB) following a motor vehicle accident. Clinical examination revealed:<\/p>\n\n\n\n

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            • Severe pain, swelling, and deformity in both shoulders.<\/li>\n\n\n\n
            • Radiographs and CT confirmed\u00a0bilateral distal clavicle fractures<\/strong>, with significant displacement.<\/li>\n<\/ul>\n\n\n\n

              Treatment Approach<\/strong><\/h3>\n\n\n\n

              Given the high risk of nonunion<\/strong> and shoulder instability<\/strong>, surgical treatment was selected. The procedure involved:<\/p>\n\n\n\n

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              1. Sequential open reduction and internal fixation (ORIF)<\/strong>\u00a0of both clavicles using\u00a0clavicular hook plates<\/strong>.<\/li>\n\n\n\n
              2. Postoperative immobilization with Velpeau slings for two weeks, followed by progressive\u00a0rehabilitation exercises<\/strong>.<\/li>\n<\/ol>\n\n\n\n

                Outcome<\/strong><\/h3>\n\n\n\n

                Radiographs at 4, 8, and 12 weeks demonstrated complete fracture healing. At the 5-year follow-up, the patient reported full shoulder function with no complications, and the hardware was left in place per the patient\u2019s preference.<\/p>\n\n\n\n

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                Conservative vs. Surgical Treatment: Making the Right Choice<\/strong><\/h2>\n\n\n\n

                Challenges of Conservative Treatment<\/strong><\/h3>\n\n\n\n

                While conservative management is often the first-line approach for non-displaced fractures<\/strong>, it is less effective for bilateral distal clavicle fractures<\/strong> due to:<\/p>\n\n\n\n

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                • High nonunion rates<\/strong>\u00a0(especially in Neer IIB fractures).<\/li>\n\n\n\n
                • Potential for\u00a0shoulder girdle dysfunction<\/strong>\u00a0caused by instability.<\/li>\n<\/ul>\n\n\n\n

                  Surgical Options<\/strong><\/h3>\n\n\n\n

                  Surgical fixation is the preferred approach for displaced fractures<\/strong>, particularly in bilateral cases. Common techniques include:<\/p>\n\n\n\n

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                  • Hook plates:<\/strong>\u00a0Effective for stabilizing distal fractures but may cause\u00a0subacromial impingement<\/strong>\u00a0or\u00a0AC joint arthritis<\/strong>.<\/li>\n\n\n\n
                  • Locking plates:<\/strong>\u00a0Provide rigid fixation with fewer complications but require precise placement.<\/li>\n\n\n\n
                  • CC ligament reconstruction:<\/strong>\u00a0Used in cases with severe ligament disruption.<\/li>\n<\/ul>\n\n\n\n

                    Key Considerations<\/strong><\/h3>\n\n\n\n
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                    • Fracture type:<\/strong>\u00a0Neer II fractures, especially IIB, typically require surgery due to their unstable nature.<\/li>\n\n\n\n
                    • Patient factors:<\/strong>\u00a0Age, activity level, and comorbidities influence treatment decisions.<\/li>\n\n\n\n
                    • Potential complications:<\/strong>\u00a0Hardware irritation, infection, and joint stiffness must be weighed against the benefits of surgical stabilization.<\/li>\n<\/ul>\n\n\n\n
                      \n\n\n\n

                      Review of Literature<\/strong><\/h2>\n\n\n\n

                      Several studies highlight the importance of surgical intervention for bilateral distal clavicle fractures:<\/p>\n\n\n\n

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                      • Zhang et al.<\/strong>\u00a0reported excellent outcomes in a 16-year-old patient treated with hook plates.<\/li>\n\n\n\n
                      • Qi et al.<\/strong>\u00a0documented successful recovery using reconstruction plates for bilateral midshaft fractures.<\/li>\n\n\n\n
                      • Sambandam et al.<\/strong>\u00a0emphasized that distal fractures are inherently unstable, making surgery the optimal choice.<\/li>\n\n\n\n
                      • Wang et al.<\/strong>\u00a0demonstrated the efficacy of titanium cables and locking plates, noting low complication rates.<\/li>\n<\/ul>\n\n\n\n

                        However, some authors caution against the routine use of hook plates due to the risk of\u00a0subacromial osteolysis<\/strong>\u00a0and recommend careful patient selection.<\/p>\n\n\n\n

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                        Conclusion<\/strong><\/h2>\n\n\n\n

                        Bilateral distal clavicle fractures<\/strong>, particularly Neer IIB types, are rare but pose significant challenges due to the potential for instability and nonunion. Accurate diagnosis requires a thorough clinical and radiological evaluation. While conservative treatment may suffice for non-displaced fractures, surgical fixation<\/strong> is the gold standard for displaced bilateral fractures to ensure anatomical reduction, stability, and optimal functional recovery.<\/p>\n\n\n\n

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