{'fraction_non_alphanumeric': 0.015915119363395226, 'fraction_numerical': 0.0, 'mean_word_length': 5.406779661016949, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Anatomic Considerations in Spine Surgery

LEARNING OBJECTIVES— By the time the reader finishes this lesson, he or she should be able to: Define the bony landmarks on the external surface of the occipital bone. Describe the posterior instrumentation in the lower cervical spine. Identify the most vulnerable and important structures during anterior dissection and decompression.