Fig. 2From: Effects of multilevel posterior ligament dissection after spinal instrumentation on adjacent segment biomechanics as a potential risk factor for proximal junctional kyphosis: a biomechanical studyStates of the specimens during testing in the treatment group. a Instrumented (intact). b Dissection of supraspinous and interspinous ligaments L4–L6. c Additional dissection of supraspinous and interspinous ligaments L3–L4. d Additional dissection of supraspinous and interspinous ligaments L2–L3Back to article page