Acknowledgments

We are very grateful for the contributions of the many people who were involved in the development and production of Measurement of Joint Motion. We wish to thank David Scalzitti and Erin Hartigan who added their considerable expertise as researchers and educators to update Chapter 3: Validity and Reliability of Goniometric Measurement, and Chapter 8: The Hip, respectively. Photographer Jason Torres of J. Torres Photography in New York used his skills and experience to produce the new high-quality photographs that appear in this fifth edition. We are appreciative of the access provided by the University of Massachusetts Lowell to take these photographs in the teaching laboratories of the Department of Physical Therapy. The late Jocelyn Molleur, who assiduously took the photographs for the third and fourth editions, and Lucia Grochowska Littlefield, who produced the photographs for the first and second editions, are also responsible for this important feature of the book. Timothy Malone, an artist from Ohio, used his talents and knowledge of anatomy to create the excellent illustrations that appear in this as well as past editions. We also offer our thanks to colleagues Erika Lewis and Kyle Coffey, as well as Jessica LeBlanc, Conor Nordengren, Samantha Rollings, Rachel Blakeslee, Chris Fournier, Colleen DeCotret, Rebecca D'Amour, Alexander White, and Claudia Van Bibber, who graciously agreed to participate in the photographs or provided painstaking research support for the fifth edition.

We wish to express our appreciation to these dedicated professionals at F. A. Davis: Margaret Biblis, Editor in Chief, Melissa Duffield, Senior Acquisitions Editor, and Laura Horowitz, Developmental Editor, for their encouragement and commitment to excellence. Our thanks are also extended to George Lang, Director of Content Development; Jennifer Pine, Manager of Developmental Editing; Cindy Breuninger, Managing Editor; Sharon Lee, Production Manager; Carolyn O'Brien, Manager of Art and Design; Daniel Domzalski, Illustration Coordinator; Elizabeth Stepchin, Project Editor; Nichole Liccio, Administrative Assistant; and Marsha Hall, Project Manager, Progressive Publishing Services. We are very grateful to the numerous, faculty, students, and clinicians who over the years have used the book or formally reviewed portions of the manuscript and offered insightful comments and helpful suggestions that have improved this text.

Finally, we wish to thank our families: Cynthia's daughter, Alexandra, and her daughters, Taylor and Kimberly; and Joyce's husband, Jonathan, and sons, Alexander and Ethan, for their continuing encouragement and support. We will always be appreciative.