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Department of Orthopaedics

Department of Orthopaedics
 

Biomechanics Lab

Modeling, Testing, Fabrication, Evaluation


Baldini
Todd Baldini, MSc

Lab Manager - Todd Baldini, MSc

Housed at the new Anschutz Medical Campus of the University of Colorado, the Biomechanics Lab represents a facility unique in the Rocky Mountain Region. The state-of-the-art facilities at the lab encompass computer modeling, biomechanical testing, device fabrication and evaluation, and surgical simulation. The lab performs research in all areas of orthopaedic biomechanics. Additionally, strong collaborations exist between the Biomechanics Lab and other labs and academic institutions worldwide. The strongest collaborations are with the Colorado School of Mines via their Bioengineering and Life Sciences Program and the IBDMS Center.

Facilities

5,740 Sq. Ft. mixed laboratory, machine shop, and freezer space
2,200 Sq. Ft. mixed office and meeting space

 

Equipment

Custom Equipment
6-degree-of-freedom servo-pneumatic joint/spine simulator system

Laboratory Equipment
Instron Model #1321 Biaxial, hydraulically actuated load frame with Model 8500 Linear/Rotary Controller
Tekscan Dynamic Pressure Measurement System
MaxTRAQ 3D Motion Analysis System with two Sentech Cameras
Polariscope (for photoelastic stress and strain measurement)
Thin section saws (2)
Biro Butchers Bandsaw
Pentax Digital SLR camera

Surgical Equipment
Medtronic and Stryker Surgical Navigation Systems
Stryker Endoscopy Systems (2)
Stryker 2102 Drill
Stryker 2104 Reamer
Stryker 2106 Recip Saw
Stryker 2108 Sag Saw

Machine Shop
Bridgeport CNC Mill
Taig Desktop CNC Milling Machine
Lagun Mill
Hardinge Lathe
Sheldon Lathe
Taig Desktop Lathe
Drill press
Band Saws (2)
Famco Press
Grinder
Buffer
Delta Belt Sander 

Research projects include:

  • Evaluation of new hardware and surgical instruments to repair rotator cuff tears in cadaver models
  • Comparison of fracture fixation hardware in cadaver and Sawbones® models
  • Optimal repair of ACL injuries
  • Location of optimum flexion-extension axis in the human knee
  • Facet joint forces, pressures, and spine kinematics as a function of intervertebral disc injury and spinal instrumentation
  • Validation and assessment of surgical navigation systems
  • Comparison of standard vs. computer navigated techniques in minimally invasive total hip replacement
  • Evaluation of total knee replacement implants and ability to restore normal kinematics
  • Facet joint pressures as a function of spinal instrumentation
  • Computer assisted surgical planning

Graduate Students

Kelly Desens, M.S. (2008)
Engineering Systems, Colorado School of Mines
Thesis: In Vivo Prediction of Modular Component Sizing, Orientation, and Range of Motion, for Total Hip Arthroplasty

Anthony J. Babb, M.S. (2007)
Engineering Systems, Colorado School of Mines
Thesis; A Comparative Study of the Anteroposterior, Cylindrical, Posterior Condylar, and Transepicondylar Axes for Femoral Implant Positioning in Total Knee Arthroplasty

Sara L. Lewandowski, M.S. (2007)
Engineering Systems, Colorado School of Mines
Thesis; Development of a Pelvic Reference Frame for Image-Guided Computer-Assisted Total Hip Arthroplasty

Tara N. Holz, M.S. (2007)
Engineering Systems, Colorado School of Mines
Thesis; The Extensor Mechanism, Patellofermoral Contact Mechanics, and Kinematics of the Knee in Four Conditions; Healty, ACL Deficient, Implanted PCL Sparing and Sacrificing.

Katherine Peeke, M.S. (2007)
Engineering Systems, Colorado School of Mines
Thesis; Study of Alignment in Total Knee Arthroplasty Around a Single Flexion Axis Evaluated for Helical and Conical Axes

Heather E. Hoops, M.S. (2007)
Engineering Systems, Colorado School of Mines
Thesis; The Neruomuscular Response of the Lumbar Spine to Varying Rest Durations Between Cyclic Flexion Periods

Kerry Jones, M.S. (2006)
Engineering Systems, Colorado School of Mines
Thesis; Development of a Soft Tissue Analog for Use in Cadaveric Knee Brace Testing

Eric T. Hansen, M.S. (2004)
Engineering Systems, Colorado School of Mines, w/Prof. Shoureshi
Thesis; Development, Calibration, and Evaluation of a Telemetric Transducer for Patellofemoral Force Measurement in a Human Knee

 

Medical Students

Dana Rioux-Forker w/Dr. A. Vidal & Dr. E. McCarty

Shane Cook w/Dr. E. McCarty

Elise Hiza w/Dr. E. McCarty

John Henry Carlson w/Dr. S. Morgan & Dr. R. Koonce

Mark Winston, w/Dr. D. Eckhoff

Clifton Hancock, w/Dr. D. Eckhoff

Bradley Gustave, w/Dr. D. Eckhoff

Shilo Gilbert, w/Dr. D. Eckhoff

Craig Hogan, w/Dr. D. Eckhoff

Ramin Alizadeh, w/Dr. D. Eckhoff

Sean Geraghty, w/Dr. D. Eckhoff

Josh Brauer, w/Dr. D. Eckhoff

David Sloss, w/Dr. D. Eckhoff

Cody Hartshorn, w/Dr. D. Eckhoff

Edwin Baca, w/Dr. D. Eckhoff

Laura DiMatteo, w/Dr. D. Eckhoff

Brian Tompkins, w/Dr. D. Eckhoff

 

Undergraduate Students

Gabriel Peacher, B.S., Spanish, Trinity College

Kaydence Cowley, B.S., Engineering, Lafayette College

David Grabski, B.S., Engineering Physics, Colorado School of Mines

Kelly Desens, B.S., Engineering, Colorado School of Mines       

Kyle Smith, B.S., Engineering, Colorado School of Mines

Tara Doucette, B.S., Kinesiology, CU Boulder, w/Dr. Eckhoff

Kim Huelson, B.S., Mathematical and Computer Sciences, CSM

Laura Borgstede, B.S., Mechanical Engineering, Colorado State University

Luke Stumme, B.S., Engineering, Colorado School of Mines

Vanessa Ruedebusch, B.S., Mechanical Engineering, Denver University

Timothy Nicklas, B.S., Mechanical Engineering, CU Boulder

Sean Douherty, B.S., Mechanical Engineering, CU Boulder

Jennifer Cech, B.S., Mechanical Engineering, CU Boulder

Fellows

Shaun Traub, M.D., w/Dr. E. McCarty
Chad Efird, M.D., w/Dr. E. McCarty
Kevin McGee, M.D., w/Dr. E. McCarty
Jason Oliviero, M.D., w/Dr. E. McCarty
Kevin Honig, M.D., w/Dr. E. McCarty
Brett Gibson, M.D., w/Dr. E. McCarty
Brian Kerr, M.D., w/Dr. E. McCarty
Dave Rabalais, M.D., w/Dr. E. McCarty
KG Swan, M.D., w/Dr. E. McCarty
Lance Snyder, M.D., w/Dr. E. McCarty
Kazayoshi Gamada, Ph.D., (2003 – 2005)

 

Orthopaedic Residents

Michal Taylor, M.D., w/Dr. A. Vidal
Jon Bravman, M.D., w/Dr. A. Vidal
Ryan Koonce, M.D., w/Dr. S. Morgan
Hector Mejia, M.D., w/Dr. M. Dayton
Laura DiMatteo, M.D., w/Dr. S. Morgan
Roger Murkin, M.D., w/Dr. S. Morgan
Monica Alberts, M.D., w/Dr. S. Morgan
Kareem Sobky, M.D., w/Dr. J. Wolf
Mike Repine, M.D., w/Dr. S. Morgan 

Lindeque B, Baldini T, “A Biomechanical Comparison of Three Different Lateral Tibia Locking Plates.” Orthopedics. 2010 Jan 1;33(1):18-21

Baldini, T; Snyder, R; McCarty, E, Peacher, G; Bach, J, “Strength of Single vs Double Anchor Repair of Type II SLAP Lesions: A Cadaver Study.  Arthroscopy: The Journal of Arthroscopic and Related Surgery, 2009 Nov;25(11):1257-60

Swan, K; McCarty, E; Baldini, T,  Arthroscopic Suture Material and Knot Type: An Updated Biomechanical Analysis.”  The American Journal of Sports Medicine, (37) 1578-1585, August 2009

Sobky K, Baldini T, Thomas K, Bach J, Williams A, Wolf JM, “Biomechanical Comparison of Different Volar Fracture Fixation Plates for Distal Radius Fractures.”  Hand, 2008 Jun;3(2):96-101. Epub 2007 Sep 7

Stiehl, JB; Bach, J; Heck, HA; Validation and Metrology in CAOS; in Navigation and MIS in Orthopedic Surgery, Stiehl, Konermann, Haaker, DiGioia, Eds.; Springer Medizin Verlag, Heidelberg, Germany, 2007. pp 68-78.

Rempel, DM; Keir, PJ; Bach, JM; The Effect of Wrist Posture on Carpal Tunnel Pressure while Typing, Journal of Orthopaedic Research, in press.

Keir, PJ; Bach, JM; Hudes, M; Rempel, DM; Guidelines for Wrist Posture Based on Carpal Tunnel Pressure Thresholds; Human Factors, Vol 49, No 1, February 2007, pp 88-99.

Eckhoff, D; Hogan, C; DiMatteo, L.; Robinson, M; Bach, J; Difference Between the Epicondylar and Cylindrical Axis of the Knee; Clinical Orthopaedics and Related Research, Vol 461, 2007, pp 238-244.

Robinson, M; Eckhoff, DG; Reinig, KD; Bagur, MM; Bach, JM; Variability of Landmark Identification in Total Knee Arthroplasty; . Clinical Orthopaedics and Related Research, Vol 442, 2006, pp 57-62.

Asundi, KR; Bach, JM; Rempel, DM. "Thumb Force and Muscle Loads Are Influenced by Pipetting Tasks and Pipette Design." Human Factors, Vol. 47, No. 1, 2005, pp. 67-76.

Eilert, RE, Hill, K; Bach, J. "Greater Trochanteric Transfer for the Treatment of Coxa Brevis." Clinical Orthopaedics and Related Research, Vol 434, 2005, pp 92-101.

Eckhoff, DG; Bach, JM; Spitzer, VM; Reinig, KD; Bagur, MM; Baldini, TH; Flannery; NMP."Three-Dimensional Mechanics, Kinematics, and Morphology of the Knee Viewed in Virtual Reality." J. Bone Joint Surg. Am., Dec 2005, 87, pp. 71 - 80.

DiGioia, AM; Mor, AB; Jaramaz, B; Bach, JM; Accuracy and Validation for Surgical Navigation Systems.  American Academy of Orthopaedic Surgeons, American Association of Orthopaedic Surgeons, Bulletin, Vol 53, No 5, Oct 2005, 10-13.

Alizadeh RI, Eckhoff DG, Samson MM, Doucette TK, Hogan CA, Bach JM. "Axial and Rotational Alignment of the Leg." Biomed Sci Instrum, Vol. 40, 2004, pp.290-6.

Erickson, M.; Oliver, T.; Baldini, T.; Bach, J.M. "Biomechanical Assessment of Conventional Unit Rod Fixation Versus a Unit Rod Pedicle Screw Construct: A Human Cadaver Study." Spine, Vol 29, No. 12, 2004, pp 1314-1319.

Eckhoff, D.G.; Bach, J.M.; Spitzer, V.M.; Reinig, K.D.; Bagur, M.; Baldini, T; Rubenstein, D; Humphries, S. "3-D Morphology and Kinematics of the Distal Femur Viewed in Virtual Reality: Part II." Journal of Bone and Joint Surgery, Vol. 85-A, Supplement 4, 2003, pp. 97-104.

Eckhoff, D.G.; Dwyer, T.F.; Bach, J.M.; Spitzer, V.M.; Reining, K.D. "Three-Dimensional Morphology of the Distal Part of the Femur Viewed in Virtual Reality." Journal of Bone and Joint Surgery, Vol. 83-A, Supplement 2, Part I, 2001, pp. 43-50.

McDuffee, LA; Stover, SM; Bach, JM; Taylor, KT. "An In Vitro Biomechanical Investigation of an Equine Interlocking Nail." Veterinary Surgery, Vol. 29, No. 1, 2000, pp. 38-47.

Keir, PJ; Bach, JM. "Flexor Muscle Incursion into the Carpal Tunnel: A Mechanism for Increased Carpal Tunnel Pressure?" Clinical Biomechanics, Vol. 15, No. 5, 2000, pp. 301-305.

Bach, JM; Hull, ML. "Strain of the Anterior Cruciate Ligament Increases Linearly with Quadriceps Contraction." Skiing Trauma and Safety: Twelfth Volume, ASTM STP 1345, R. Johnson, Ed., American Society for Testing and Materials, West Conshohocken, PA, 1999, pp. 94-104.

Keir, PJ; Bach, JM; Rempel, DM."Effect of Computer Mouse Design and Task on Carpal Tunnel Pressure." Ergonomics, Vol. 42, No. 10, 1999, pp. 1350-1360.