Lantern-shaped screw loaded with autologous bone for treating osteonecrosis of the femoral head

Lantern-shaped screw loaded with autologous bone for treating osteonecrosis of the femoral head

Abstract Background Treatment for osteonecrosis of the femoral head (ONFH) in young individuals remains controversial. We developed a lantern-shaped screw, which was designed to provide mechanical support for the femoral head to prevent its collapse, for the treatment of ONFH. The purpose of this st...

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Bibliographic Details
Main Authors: Dasheng Lin, Lei Wang, Zhaoliang Yu, Deqing Luo, Xigui Zhang, Kejian Lian
Format: Article
Language:English
Published: BMC 2018-09-01
Series:BMC Musculoskeletal Disorders
Subjects:
Lantern-shaped screw
Autogenous bone graft
Core decompression
Osteonecrosis of the femoral head
Online Access:http://link.springer.com/article/10.1186/s12891-018-2243-z
Description
Summary:Abstract Background Treatment for osteonecrosis of the femoral head (ONFH) in young individuals remains controversial. We developed a lantern-shaped screw, which was designed to provide mechanical support for the femoral head to prevent its collapse, for the treatment of ONFH. The purpose of this study was to investigate the efficacy and safety of the lantern-shaped screw loaded with autologous bone for the treatment of pre-collapse stages of ONFH. Methods Thirty-two patients were randomly divided into two groups: the lantern-shaped screw group (core decompression and lantern-shaped screw loaded with autogenous bone) and the control group (core decompression and autogenous bone graft). During 36 months follow-up after surgery, treatment results in patients were assessed by X-ray and computed tomography (CT) scanning as well as functional recovery Harris hip score (HHS). Results Successful clinical results were achieved in 15 of 16 hips (94%) in the lantern-shaped screw group compared with 10 of 16 hips (63%) in the control group (p = 0.0325). Successful radiological results were achieved in 14 of 16 hips (88%) in the lantern-shaped screw group compared with 8 of 16 hips (50%) in the control group (P = 0.0221). Conclusion The lantern-shaped screw loaded with autologous bone for the treatment of pre-collapse stages of ONFH is effective and results in preventing progression of ONFH and reducing the risk of femoral head collapse. Trial registration The trial registration number: ChiCTR-TRC-13004078 (retrospectively registered at 2013-11-28).
ISSN:1471-2474

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