Morphologic Variability of the Shoulder between the Populations of North American and East Asian

Autor: Michael M. Hussey, Hyuong Sik Kim, Kristi Krebes, Brandon G. Santoni, Joo Han Oh, Andres F. Cabezas, Mark A. Frankle
Rok vydání: 2016
Předmět:
Zdroj: Clinics in Orthopedic Surgery
ISSN: 2005-4408
2005-291X
DOI: 10.4055/cios.2016.8.3.280
Popis: Morphometric analysis of anatomy can be very valuable to a surgeon when assessing patient-specific implant needs prior to commencing any orthopedic procedure.1,2,3,4) An analysis may occur on the micro-scale, where the surgeon evaluates an independent patient for surgical planning, or on the macro-scale, wherein populations as a whole are analyzed for trends or relationships. Values generated from the latter type of analysis could be valuable for improving the design of implant systems to better suit the needs of specific patient populations. While there are a number of arthroplasty systems available on the market that offer multiple implant sizes, these devices were designed with the population of the USA and Western Europe in mind.5,6,7) Increases in international trade, such as between North America and East Asia,8) may raise the concern that utilizing existing systems tailored for the Western world would be suboptimal in an East Asian population. Previous work from Aroonjarattham et al.9) directly compared datasets of a Thai population and a USA cohort: their findings indicated that the former group displayed, on average, a smaller humeral head. Other studies of a similar scope have also reported that the USA populations exhibit larger humeral head measurements overall.3,4,10) In addition to these morphometric findings, anthropomorphic data from large scale studies indicate that the East Asian population is smaller overall in terms of both height and weight.11,12,13) While it could be inferred that there would likely be sizing issues due to the differences associated with height and, therefore, shoulder size,14) there may also be other morphologic differences within the shoulder joint that have not been described. While these morphologic differences are likely small, their potential impact on shoulder kinematics and resulting clinical outcomes merits in-depth analyses of these populations. Using a set of prescribed metrics of the anatomic and glenohumeral relationships of the shoulder,14) the purpose of this study was to determine the morphologic and spatial differences, if any, between North American and East Asian populations.
Databáze: OpenAIRE