Osteoprotegerin/bone morphogenetic protein 2 combining with collagen sponges on tendon-bone healing in rabbits.

Introduction: The aim was to investigate the effect of collagen sponges (CS) as a delivery device for osteoprotegerin (OPG)/bone morphogenetic protein 2 (BMP-2) and support matrix on the tendon-bone healing after anterior crusicate ligament (ACL) reconstruction in modeled rabbits.

Materials And Methods: Sixty New Zealand white rabbits were randomly divided into four groups based on treatments they received at the tendon-bone interface after left knee ACL reconstruction: the control group, OPG/BMP-2, CS, and OPG/BMP-2/CS combination. At 4, 8 and 12 weeks post-surgery, five rabbits from each group were euthanized to examine the tendon-bone healing.

[Comparative analysis of two hybrid technique in treating multilevel cervical spondylotic myelopathy via anterior approach].

Objective: To compare the clinical effects and complications of two hybrid decompression techniques in treating multilevel (>=3) cervical spondylotic myelopathy(MCSM).

Methods: The clinical data of 124 patients with multilevel (>=3) cervical spondylotic myelopathy treated by surgery and follow-up from January 2008 to December 2016 were retrospectively analyzed. According to the different operative methods, the patients were divided into group A and group B.