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'https://openalex.org/W2115323658', 'https://openalex.org/W2112800097'], 'abstract_inverted_index': {'Introduction': [0], 'Proximal': [1], 'junctional': [2, 31, 146, 236, 417], 'kyphosis': [3, 151, 380], '(PJK)': [4], 'is': [5, 443], 'a': [6, 35, 64, 124, 444], 'well-known': [7], 'complication': [8], 'following': [9], 'long': [10, 426, 437], 'posterior': [11], 'spinal': [12, 17, 441], 'fusion': [13, 78], '(PSF)': [14], 'for': [15, 47, 66, 75, 101, 286, 317, 439], 'adult': [16, 103, 440], 'deformity': [18, 442], 'and': [19, 56, 93, 98, 117, 136, 163, 187, 191, 220, 257, 311, 332, 403, 422, 446], 'occurs': [20], 'in': [21, 34, 126, 194, 298, 349, 378, 419, 436], '9–46%': [22], 'of': [23, 27, 49, 73, 85, 155, 171, 222, 249, 263, 269, 280, 399, 406, 432, 453], 'surgeries.': [24], 'A': [25], 'subset': [26], 'these': [28], 'develop': [29], 'proximal': [30, 145], 'failure,': [32, 149], 'resulting': [33], '26–39%': [36], 'revision': [37, 211, 218, 232], 'rate': [38], 'within': [39, 246], 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