Transient decreases in forelimb gait and ground reaction forces following rotator cuff injury and repair in a rat model.

Journal of Biomechanics
Joseph J SarverLouis J Soslowsky

Abstract

Due to inadequate healing, surgical repairs of torn rotator cuff tendons often fail, limiting the recovery of upper extremity function. The rat is frequently used to study rotator cuff healing; however, there are few systems capable of quantifying forelimb function necessary to interpret the clinical significance of tissue level healing. We constructed a device to capture images, ground reaction forces and torques, as animals ambulated in a confined walkway, and used it to evaluate forelimb function in uninjured control and surgically injured/repaired animals. Ambulatory data were recorded before (D-1), and 3, 7, 14, 28 and 56 days after surgery. Speed as well as step width and length were determined by analyzing ventral images, and ground reaction forces were normalized to body weight. Speed averaged 22+/-6 cm/s and was not affected by repair or time. Step width and length of uninjured animals compared well to values measured with our previous system. Forelimbs were used primarily for braking (-1.6+/-1.5% vs +2.5+/-0.6%), bore less weight than hind limbs (49+/-5% vs 58+/-4%), and showed no differences between sides (49+/-5% vs 46+/-5%) for uninjured control animals. Step length and ground reaction forces of the repaired animal...Continue Reading

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Citations

Aug 9, 2011·Sports Medicine and Arthroscopy Review·Umile Giuseppe LongoVincenzo Denaro
Dec 12, 2013·Clinical Orthopaedics and Related Research·Stephen J ThomasLouis J Soslowsky
Oct 21, 2016·Osteoarthritis and Cartilage·Emily H Lakes, Kyle D Allen
Sep 11, 2013·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Hironori YamazakiKazuhisa Takahashi
Jan 28, 2014·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Katherine E ReutherLouis J Soslowsky
Jul 2, 2014·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Corinne N RigginAndrew F Kuntz
May 17, 2014·Journal of Biomechanics·Ryan PotterStavros Thomopoulos
Mar 10, 2015·Journal of Shoulder and Elbow Surgery·Katherine E ReutherLouis J Soslowsky
Apr 3, 2016·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Benjamin R FreedmanLouis J Soslowsky
Jun 11, 2016·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Jennica J TuckerLouis J Soslowsky
Sep 15, 2017·Annals of Biomedical Engineering·C A NussL J Soslowsky
Jul 30, 2014·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Katherine E ReutherLouis J Soslowsky
Oct 23, 2018·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Adnan N CheemaLouis J Soslowsky
Feb 6, 2019·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Cody D HillinLouis J Soslowsky
Oct 1, 2014·Annals of Biomedical Engineering·Katherine E ReutherLouis J Soslowsky
Jan 3, 2013·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Katherine E ReutherLouis J Soslowsky
Jul 7, 2015·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Takeshi YamaguchiKazuhisa Takahashi
Oct 9, 2019·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Julianne HuegelLouis J Soslowsky
Aug 25, 2017·The Journal of the American Academy of Orthopaedic Surgeons·Benjamin R FreedmanLouis Soslowsky
Feb 11, 2011·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Jason E HsuLouis J Soslowsky
Sep 17, 2020·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Corinne N RigginLouis J Soslowsky
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Dec 2, 2021·The American Journal of Sports Medicine·Thomas P LeahyLouis J Soslowsky

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