Basic concepts in metal work failure after metastatic spine tumour surgery

Autor: Lorin Michael Benneker, Helena Milavec, Aravind Kumar, Ravish Shammi Patel, Dhiraj Sonawane, Gurpal Singh, Anshuja Charvi Wadhwa, Naresh Kumar
Rok vydání: 2017
Předmět:
Zdroj: Kumar, Naresh; Patel, Ravish; Wadhwa, Anshuja Charvi; Kumar, Aravind; Milavec, Helena Maria; Sonawane, Dhiraj; Singh, Gurpal; Benneker, Lorin Michael (2018). Basic concepts in metal work failure after metastatic spine tumour surgery. European spine journal, 27(4), pp. 806-814. Springer 10.1007/s00586-017-5405-z
ISSN: 1432-0932
0940-6719
DOI: 10.1007/s00586-017-5405-z
Popis: PURPOSE The development of spinal implants marks a watershed in the evolution of metastatic spine tumour surgery (MSTS), which has evolved from standalone decompressive laminectomy to instrumented stabilization and decompression with reconstruction when necessary. Fusion may not be feasible after MSTS due to poor quality of graft host bed along with adjunct chemotherapy and/or radiotherapy postoperatively. With an increase in the survival of patients with spinal tumours, there is a probability of an increase in the rate of implant failure. This review aims to help establish a clear understanding of implants/constructs used in MSTS and to highlight the fundamental biomechanics of implant/construct failures. METHODS Published literature on implant failure after spine surgery and MSTS has been reviewed. The evolution of spinal implants and their role in MSTS has been briefly described. The review defines implant/construct failures using radiological parameters that are practical, feasible, and derived from historical descriptions. We have discussed common modes of implant/construct failure after MSTS to allow further understanding, interception, and prevention of catastrophic failure. RESULTS Implant failure rates in MSTS are in the range of 2-8%. Variability in patterns of failure has been observed based on anatomical region and the type of constructs used. Patients with construct/implant failures may or may not be symptomatic and present either as early ( 3months). It has been noted that not all the implant failures after MSTS result in revisions. CONCLUSION Based on the observed radiological criteria and clinical presentations, we have proposed a clinico-radiological classification for implant/construct failure after MSTS.
Databáze: OpenAIRE
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