Hugo Giambini1, Taku Hatta2, Krzysztof R Gorny3, Per Widholm4,5,6, Anette Karlsson4,7, Olof D Leinhard4,6, Mark C Adkins3, Chunfeng Zhao1,2, Kai-Nan An1,2. 1. Department of Orthopedic Surgery, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA. 2. Biomechanics Laboratory, Mayo Clinic, Rochester, Minnesota, USA. 3. Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA. 4. Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden. 5. Department of Radiology, Linköping University, Linköping, Sweden. 6. Department of Medical and Health Sciences, Linköping University, Linköping, Sweden. 7. Department of Biomedical Engineering, Linköping University, Linköping, Sweden.
Abstract
INTRODUCTION: Rotator cuff (RC) tears result in muscle atrophy and fat infiltration within the RC muscles. An estimation of muscle quality and deformation, or extensibility, is useful in selecting the most appropriate surgical procedure. We determined if noninvasive quantitative assessment of intramuscular fat using MRI could be used to predict extensibility of the supraspinatus muscle. METHODS: Seventeen cadaveric shoulders were imaged to assess intramuscular fat infiltration. Extensibility and histological evaluations were then performed. RESULTS: Quantitative fat infiltration positively correlated with histological findings and presented a positive correlation with muscle extensibility (r = 0.69; P = 0.002). Extensibility was not significantly different between shoulders graded with a higher fat content versus those with low fat when implementing qualitative methods. DISCUSSION: A noninvasive prediction of whole-muscle extensibility may directly guide pre-operative planning to determine if the torn edge could efficiently cover the original footprint while aiding in postoperative evaluation of RC repair. Muscle Nerve 57: 129-135, 2018.
INTRODUCTION: Rotator cuff (RC) tears result in muscle atrophy and fat infiltration within the RC muscles. An estimation of muscle quality and deformation, or extensibility, is useful in selecting the most appropriate surgical procedure. We determined if noninvasive quantitative assessment of intramuscular fat using MRI could be used to predict extensibility of the supraspinatus muscle. METHODS: Seventeen cadaveric shoulders were imaged to assess intramuscular fat infiltration. Extensibility and histological evaluations were then performed. RESULTS: Quantitative fat infiltration positively correlated with histological findings and presented a positive correlation with muscle extensibility (r = 0.69; P = 0.002). Extensibility was not significantly different between shoulders graded with a higher fat content versus those with low fat when implementing qualitative methods. DISCUSSION: A noninvasive prediction of whole-muscle extensibility may directly guide pre-operative planning to determine if the torn edge could efficiently cover the original footprint while aiding in postoperative evaluation of RC repair. Muscle Nerve 57: 129-135, 2018.
Authors: Samuel R Ward; Eric R Hentzen; Laura H Smallwood; Robert K Eastlack; Katherine A Burns; Donald C Fithian; Jan Friden; Richard L Lieber Journal: Clin Orthop Relat Res Date: 2006-07 Impact factor: 4.176
Authors: Taku Hatta; Hugo Giambini; Yoshiaki Itoigawa; Alexander W Hooke; John W Sperling; Scott P Steinmann; Eiji Itoi; Kai-Nan An Journal: J Biomech Date: 2017-07-21 Impact factor: 2.712
Authors: Obiajulu Agha; Agustin Diaz; Michael Davies; Hubert T Kim; Xuhui Liu; Brian T Feeley Journal: Ann N Y Acad Sci Date: 2020-07-29 Impact factor: 5.691