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Postural assessment has traditionally been approached from a structural perspective focused on body alignment, with the model proposed by Kendall standing out as one of the main theoretical references in the clinical and educational fields. However, the recent development of functional approaches and the advancement of technological tools have generated the need to review its conceptual foundations and its evolution in the scientific literature.
The objective of this research was to analyze the historical evolution of Kendall's postural model through a content analysis of its theoretical foundations and its transition towards functional assessment approaches. The study was developed using a qualitative, documentary approach, with content analysis as the main technique. A corpus of four scientific articles was selected through a systematic review and refinement process, supported by inclusion and exclusion criteria. Data processing was carried out using Atlas.ti software, allowing for coding, categorization, and relational analysis. The results show that postural assessment maintains a solid structural foundation linked to body alignment, but is progressively incorporating elements associated with neuromuscular control, muscle function, and measurement quality. Likewise, an evolution in assessment methods was identified, geared towards objectification through more precise and reproducible tools. Co-occurrence analysis revealed the articulation between structural, functional, and evaluative approaches. It is concluded that Kendall's postural model has not been replaced, but rather expanded, integrating new perspectives that foster a more comprehensive understanding of posture. This evolution is key to the development of more consistent assessment methods and the incorporation of technologies applied to human movement analysis.
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