Figure 3From: The impact of the leg-lengthening total hip arthroplasty on the coronal alignment of the spineClassification of the scoliosis change according to the POb change. Classification of the scoliosis change according to the POb change. Seventy five of 195 did not exhibit POb change (ΔPOb(-)) and scoliosis did not progress. In 120 ΔPOb(+) patients, 45 showed improve of scoliosis (ΔLS(-)) and 54 showed compensation at lumbosacral junction without changing scoliosis (ΔLS(n)). Twenty one cases developed spinal imbalance or progressed scoliosis (ΔPOb(+),ΔLS(+)). A: 7 cases developed de novo scoliosis due to the rigid lumbosacral junction. B: 2 cases showed the over compensation at lumbosacral junction and developed lumbar scoliosis. C: 5 cases developed scoliosis due to the leg lengthening THA on the contralateral side. D: 7 cases developed plumb line shift due to the rigid lumbar scoliosis or lumbosacral junction.Back to article page