PurposeTo systematically compare the efficacy and safety of lumbar total disc replacement (TDR) with the efficacy and safety of anterior lumbar interbody fusion (ALIF) for the treatment of lumbar degenerative disc disease (LDDD). MethodsThe electronic databases PubMed. Web of Science and the Cochrane Library were searched for the period from the establishment of the databases to March... https://fitnessgravesyardes.shop/product-category/ball-bearing/