Publications

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  • The Association of Forefoot Varus Deformity with Patellofemoral Cartilage Damage in Older Adult Cadavers ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY Lufler, R. S., Stefanik, J. J., Niu, J., Sawyer, F., Hoagland, T. M., Gross, K. 2017; 300 (6): 1032–38

    Abstract

    Forefoot alignment may contribute to patellofemoral joint (PFJ) osteoarthritis (OA) via its influence on the closed chain kinematics of the lower limb. The purpose of this cadaveric study was to investigate the relationship between forefoot varus and ipsilateral cartilage damage in the medial and lateral PFJ. Forefoot alignment measurements were obtained from the feet of 25 cadavers (n = 50). Cartilage damage in the medial and lateral PFJ of each knee was scored using the Outerbridge scale. The relative odds of medial and lateral PFJ cartilage damage in limbs with forefoot varus and valgus were determined using logistic regression. The relationship between increasing varus alignment and increasing odds of medial and lateral PFJ cartilage damage was assessed. Of the 51% of limbs with forefoot varus, 91.3% had medial, and 78.3% had lateral PFJ cartilage damage, compared with 54.6% and 68.2% of those with forefoot valgus. The former also had 3.0 times (95% CI 1.2, 7.7) the odds of medial PFJ damage; no association was found with lateral damage (OR 1.4, 95% CI 0.7, 3.0). Feet in the highest tertile of varus alignment had 3.9 times (95% CI 10, 15.3, P = 0.058) the odds of medial PFJ damage as those in the lowest tertile. The results of this study suggest a relationship between forefoot varus and medial PFJ cartilage damage in older adults. As forefoot varus may be modified with foot orthoses, these findings indicate a potential role for orthoses in the treatment of medial PFJ OA. Anat Rec, 300:1032-1038, 2017. © 2016 Wiley Periodicals, Inc.

    View details for DOI 10.1002/ar.23524

    View details for Web of Science ID 000401273000006

    View details for PubMedID 27884055

  • Architecture of the Suprahyoid Muscles: A Volumetric Musculoaponeurotic Analysis. Journal of speech, language, and hearing research : JSLHR Shaw, S. M., Martino, R., Mahdi, A., Sawyer, F. K., Mathur, S., Hope, A., Agur, A. M. 2017; 60 (10): 2808–18

    Abstract

    Suprahyoid muscles play a critical role in swallowing. The arrangement of the fiber bundles and aponeuroses has not been investigated volumetrically, even though muscle architecture is an important determinant of function. Thus, the purpose was to digitize, model in three dimensions, and quantify the architectural parameters of the suprahyoid muscles to determine and compare their relative functional capabilities.Fiber bundles and aponeuroses from 11 formalin-embalmed specimens were serially dissected and digitized in situ. Data were reconstructed in three dimensions using Autodesk Maya. Architectural parameters were quantified, and data were compared using independent samples t-tests and analyses of variance.Based on architecture and attachment sites, suprahyoid muscles were divided into 3 groups: anteromedial, superolateral, and superoposterior. Architectural parameters differed significantly (p < .05) across muscles and across the 3 groups, suggesting differential roles in hyoid movement during swallowing. When activated simultaneously, anteromedial and superoposterior muscle groups could work together to elevate the hyoid.The results suggest that the suprahyoid muscles can have individualized roles in hyoid excursion during swallowing. Muscle balance may be important for identifying and treating hyolaryngeal dysfunction in patients with dysphagia.

    View details for DOI 10.1044/2017_JSLHR-S-16-0277

    View details for PubMedID 28973130

  • PERIOPERATIVE AIRWAY CHANGES AND THEIR RETURN TO BASELINE IN PATIENTS UNDERGOING ELECTIVE SURGERY IN THE PRONE AND TRENDELENBURG POSITIONS: EARLY DATA Sawyer, F., Phan, T., Duarte, I., Bonney, I., Schumann, R. LIPPINCOTT WILLIAMS & WILKINS. 2016
  • The Branching and Innervation Pattern of the Radial Nerve in the Forearm: A Study to Clarify the Literature Sawyer, F., Lufler, R. FEDERATION AMER SOC EXP BIOL. 2016