无菌松动被认为是肩胛骨前端假体置换术（PHER）中相对不常见的并发症。然而，患有无菌松动的患者常常遭受严重的骨丢失，这在随后的修复中提出了巨大挑战。在这种情况下，标准的有杆假体无法用于修复肢体。计算机辅助设计和3D打印的个性化植入物是重建复杂骨缺损的新兴解决方案。在这里，我们介绍了一位67岁的男性患者，他在肿瘤切除术后接受了PHER并发生了无菌松动，患者在杆周围出现了严重的假体周围性骨溶解。我们使用计算机辅助设计和3D打印的个性化杆板复合物来进行这位患者的精准修复。随访期间，观察到令人鼓舞的结果，术后假体稳定良好，患者肢体功能满意。本例中使用的计算机辅助设计和3D打印的个性化杆板复合物可能有助于实现良好的假体稳定和满意的肢体功能。这种3D打印的个性化杆板复合物似乎是处理患有严重假体周围性骨溶解的PHER的精确修复的有效方法。此外，它还为类似的关节修复手术或有严重骨缺损的原发性假体置换提供了一种新的方法。© 2023 The Authors. Orthopaedic Surgery published by Tianjin Hospital and John Wiley & Sons Australia, Ltd.

Aseptic loosening is considered to be a rather uncommon complication in proximal humerus endoprosthetic replacement (PHER). However, patients with aseptic loosening often suffer severe bone loss, which poses a great challenge in following revision. Under this situation, a standard stemmed endoprosthesis is unavailable for revision limb salvage. Computer-aided design and 3D-printed personalized implants are an emerging solution for reconstructing complex bone defects.Here, we present a 67-year-old male who underwent PHER after tumor resection and developed aseptic loosening with severe periprosthetic osteolysis around the stem. Computer-aided design and 3D-printed personalized stem-plate composite was used for the precision revision of this patient. During the follow-up, encouraging results were observed, with good endoprosthetic stability and satisfactory limb function.Computer-aid design and 3D-printed personalized stem-plate composite used in the present case could help to achieve good endoprosthetic stability and satisfactory limb function. This 3D-printed personalized stem-plate composite seems to be an effective method for the precise revision of PHER in patients with severe periprosthetic osteolysis. In addition, it also provides a novel method for similar revision surgery of other joints or primary endoprosthetic replacement with severe bone defects.© 2023 The Authors. Orthopaedic Surgery published by Tianjin Hospital and John Wiley & Sons Australia, Ltd.