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Hayden-William Courtland, PhD

Mark W. Lenhoff


Hayden-William Courtland, PhD

Mark W. Lenhoff


Leon Root Motion Analysis Lab
510 East 73rd, Ground Floor
New York, NY 10027

Tel: 212.606.1727
Fax: 212.774.7859

Leon Root Motion Analysis Lab
510 East 73rd, Ground Floor
New York, NY 10027

Tel: 212.606.1727
Fax: 212.774.7859

Back in the Game Patient Stories

Research Description

Mark Lenhoff has been working in the field of biomechanics and the in the Leon Root Motion Analysis Laboratory at HSS since 1989. He is extremely well versed in all aspects of motion capture, related instrumentation and software. He has programmed devices ranging from microcontrollers for wrist braces to industrial robots for joint mechanics testing.

In Mr. Lenhoff's role as chief engineer he oversees the technical and operational aspects of the laboratory, participates in research, and assists the clinical staff with testing. He collaborates with surgeons, scientists, therapists and believes that presenting technical topics to the clinical staff in an accessible manner is critical for the optimum performance of the laboratory.

His research interests include biomechanics and function of the musculoskeletal system. In addition he has an interest in the application of mobile technology to research, patient education and rehabilitation.

Selected Publications

Lenhoff MW, Santner TJ, Otis JC, Peterson MG, Williams BJ, Backus SI. Bootstrap prediction and confidence bands: A superior statistical method for analysis of gait data. Gait Posture. 1999 Mar;9(1):10-7

Battaglia MJ, Lenhoff MW, Ehteshami JR, Lyman, S, Provencher MT, Wickiewicz TL, Warren RF. Medial Collateral Ligament Injuries and Subsequent Load on the Anterior Cruciate Ligament: A Biomechanical Evaluation in a Cadaveric Model, American Journal of Sports Medicine 2008

Solomon DJ, Lenhoff M, Wickiewicz T, Warren R, Pearle A. In Situ Force in the Anterior Cruciate Ligament and Knee Kinematics in the Partially and Completely Posterolateral Corner Deficient Knee. Arthroscopy, June 2006,Volume 22 , Issue 6 , e5 - e6

Mootanah R, Imhauser CW, Reisse F, Carpanen D, Walker RW, Koff MF, Lenhoff MW, Rozbruch SR, Fragomen AT, Dewan Z, Kirane YM, Cheah K, Dowell JK, Hillstrom HJ. Development and validation of a computational model of the knee joint for the evaluation of surgical treatments for osteoarthritis. Comput Methods Biomech Biomed Engin. 2014;17(13):1502-17. doi: 10.1080/10255842.2014.899588. Epub 2014 May 1. PMID: 24786914

Kraszewski AP, Osei DA, Garg R, Jang E, Hillstrom HJ, Lenhoff MW, Wolfe SW. The effect of wrist surgery on the kinematic consistency of joint axis reconstruction in a static posture. Journal of Orthopaedic Research; 33(9): 1341-1347, 2015. doi:10.1016/j.jhsa.2015.04.035

Page C, Backus SI, Lenhoff MW. Electromyographic activity in stiff and normal elbows during elbow flexion and extension. J Hand Ther. 2003 Jan-Mar;16(1):5-11.

Mootanah R, Song J, Lenhoff MW, Hafer JF, Backus SI, Gagnon D, Deland JT 3rd, Hillstrom HJ. Foot Type Biomechanics Part 2: are structure and anthropometrics related to function? Gait Posture. 2013 Mar;37(3):452-6. doi: 10.1016/j.gaitpost.2012.09.008. Epub 2012 Oct 26. PMID: 23107624

Wolff AL, Garg R, Kraszewski AP, Hillstrom HJ, Hafer JF, Backus SI, Lenhoff ML, Wolfe SW. Surgical Treatments for Scapholunate Advanced Collapse Wrist: Kinematics and Functional Performance. J Hand Surg Am. 2015 Aug;40(8):1547-53. doi: 10.1016/j.jhsa.2015.04.035. Epub 2015 Jun 17. PMID: 26092664

Hillstrom HJ, Garg R, Kraszewski A, Lenhoff M, Carter T, Backus SI, Wolff A, Syrkin G, Cheng R, Wolfe SW. Development of an anatomical wrist joint coordinate system to quantify motion during functional tasks. J Appl Biomech. 2014 Aug;30(4):586-93. doi: 10.1123/jab.2011-0094. Epub 2014 Mar 10. PMID: 24615208

Carter TI, Pansy BS, Wolff AL, Hillstrom HJ, Backus SI, Lenhoff MW, et al. Accuracy and reliability of three different techniques for manual goniometry for wrist motion: A cadaveric study. J Hand Surg Am. 2009 Oct;34(8):1422-8.

Garg R, Kraszewski A, Holbrrok S, Syrkin G., Hillstrom H, Backus S, Lenhoff M, Wolff A, Crisco J, Wolfe S. Wrist kinematic coupling and performance during functional tasks: Effects of constrained motion. Journal of Hand Surgery. 2014.

Backus SI, Tomlinson D, Vanadurongwan B, Lenhoff MW, Cordasco FA, Chehab E, et al. A spectral analysis of rotator cuff musculature electromyographic activity: Surface and indwelling. HSS Journal. 2011 Feb;7(1):21-8.

Appointments

Chief Engineer, Hospital for Special Surgery