Background：The injury of the triangular fibrocartilage complex （TFCC） is a common cause of ulnar-sided wrist pain.The aim of this study was to investigate if the high-resolution 3T magnetic resonance imaging （MRI...Background：The injury of the triangular fibrocartilage complex （TFCC） is a common cause of ulnar-sided wrist pain.The aim of this study was to investigate if the high-resolution 3T magnetic resonance imaging （MRI） could demonstrate the detailed complex anatomy of TFCC in Chinese.Methods：Fourteen Chinese cadaveric wrists （from four men and three women;age range at death from 30 to 60 years;mean age at 46 years） and forty healthy Chinese wrists （from 20 healthy volunteers,male/female：10/10;age range from 21 to 53 years with a mean age of 32 years） in Beijing Jishuitan Hospital from March 2014 to March 2016 were included in this study.All cadavers and volunteers had magnetic resonance （MR） examination of the wrist with coronal T 1-weighted and proton density-weighted imaging with fat suppression in three planes,respectively.MR arthrography （MRAr） was performed on one of the cadaveric wrists.Subsequently,all 14 cadaveric wrists were sliced into 2 mm thick slab with band saw （six in coronal plane,four in sagittal plane,and four in axial plane）.The MRI features of normal TFCC were analyzed in these specimens and forty healthy wrists.Results：Triangular fibrocartilage,the ulnar collateral ligament,and the meniscal homolog could be best observed on images in coronal plane.The palmar and dorsal radioulnar ligaments were best evaluated in transverse plane.The ulnotriquetral and ulnolunate ligaments were best visualized in sagittal plane.The latter two structures and the volar and dorsal capsules were better demonstrated on MRAr.Conclusion：High-resolution 3T MRI is capable to show the detailed complex anatomy of the TFCC and can provide valuable information for the clinical diagnosis in Chinese.展开更多
Background： Adipose-derived stromal vascular fraction （ADSVF） can be applied to repair tendon and ligament tears. ADSVF treatment has a better therapeutic potential than adipose stem cells alone in promoting the he...Background： Adipose-derived stromal vascular fraction （ADSVF） can be applied to repair tendon and ligament tears. ADSVF treatment has a better therapeutic potential than adipose stem cells alone in promoting the healing of connective tissue injury in rabbit models. Magnetic resonance imaging （MRI） and biomechanical testing were used in this study to evaluate the efficiency of SVF in the healing of tendon-bone interface of a rotator cuff injury after reattachment. Methods： A total of 36 rabbits were studied between March and June 2016, 18 rabbits received the SVF-fibrin glue （SVF-FG） treatment and the other 18 formed the control group. ADSVF was isolated from each rabbit. A bilateral amputation of the supraspinatus tendon and parallel reconstruction was also performed on all the 36 rabbits. Then, a mixture of SVF and FG was injected into the tendon-bone interface of the SVF-FG group, whereas the control group only received FG. Tile animals were randomly sacrificed at 4, 8, and 12 weeks after surgery （n = 6 per group）, respectively. The shoulders were prepared for MRI scanning and analysis of biomechanical properties. Analyses of variance were pertbrmed using SPSS 13.0. Results： MRI scanning showed that the signal-to-noise quotient of the SVF-FG group was not significantly higher than that of the control group at either 4 （20.1 ± 3.6 vs. 18.2 ± 3.4, F = 1.570, P = 0.232） or 8 weeks （20.7 ±3.3 vs. 18.0 ± 3.0, F = 2.162, P = 0.117） posttreatment, and only became significant after 12 weeks （27.5± 4.6 vs. 22.1 ± 1.9, F 4.968, P = 0.009）. Biomechanical properties such as the maximum load, maximum strength, and the stiffness for the SVF-FG group were significantly greater than that for the control group at 8 weeks＇ posttreatment （maximum load： 166.89 ± 11.62 N vs. 99.40 ± 5.70 N, P 〈 0.001： maximum strength： 8.22 ± 1.90 N/ram vs. 5.82 ±0.68 N/ram, P 〈 0.010： and the stiffness： 34.85±3.00 Pa vs. 24.57±5.72 Pa, P 〈 0.010）. Conclusion： Local application of ADSVF might lead to better tendon-bone healing in rabbit models.展开更多
文摘Background：The injury of the triangular fibrocartilage complex （TFCC） is a common cause of ulnar-sided wrist pain.The aim of this study was to investigate if the high-resolution 3T magnetic resonance imaging （MRI） could demonstrate the detailed complex anatomy of TFCC in Chinese.Methods：Fourteen Chinese cadaveric wrists （from four men and three women;age range at death from 30 to 60 years;mean age at 46 years） and forty healthy Chinese wrists （from 20 healthy volunteers,male/female：10/10;age range from 21 to 53 years with a mean age of 32 years） in Beijing Jishuitan Hospital from March 2014 to March 2016 were included in this study.All cadavers and volunteers had magnetic resonance （MR） examination of the wrist with coronal T 1-weighted and proton density-weighted imaging with fat suppression in three planes,respectively.MR arthrography （MRAr） was performed on one of the cadaveric wrists.Subsequently,all 14 cadaveric wrists were sliced into 2 mm thick slab with band saw （six in coronal plane,four in sagittal plane,and four in axial plane）.The MRI features of normal TFCC were analyzed in these specimens and forty healthy wrists.Results：Triangular fibrocartilage,the ulnar collateral ligament,and the meniscal homolog could be best observed on images in coronal plane.The palmar and dorsal radioulnar ligaments were best evaluated in transverse plane.The ulnotriquetral and ulnolunate ligaments were best visualized in sagittal plane.The latter two structures and the volar and dorsal capsules were better demonstrated on MRAr.Conclusion：High-resolution 3T MRI is capable to show the detailed complex anatomy of the TFCC and can provide valuable information for the clinical diagnosis in Chinese.
文摘Background： Adipose-derived stromal vascular fraction （ADSVF） can be applied to repair tendon and ligament tears. ADSVF treatment has a better therapeutic potential than adipose stem cells alone in promoting the healing of connective tissue injury in rabbit models. Magnetic resonance imaging （MRI） and biomechanical testing were used in this study to evaluate the efficiency of SVF in the healing of tendon-bone interface of a rotator cuff injury after reattachment. Methods： A total of 36 rabbits were studied between March and June 2016, 18 rabbits received the SVF-fibrin glue （SVF-FG） treatment and the other 18 formed the control group. ADSVF was isolated from each rabbit. A bilateral amputation of the supraspinatus tendon and parallel reconstruction was also performed on all the 36 rabbits. Then, a mixture of SVF and FG was injected into the tendon-bone interface of the SVF-FG group, whereas the control group only received FG. Tile animals were randomly sacrificed at 4, 8, and 12 weeks after surgery （n = 6 per group）, respectively. The shoulders were prepared for MRI scanning and analysis of biomechanical properties. Analyses of variance were pertbrmed using SPSS 13.0. Results： MRI scanning showed that the signal-to-noise quotient of the SVF-FG group was not significantly higher than that of the control group at either 4 （20.1 ± 3.6 vs. 18.2 ± 3.4, F = 1.570, P = 0.232） or 8 weeks （20.7 ±3.3 vs. 18.0 ± 3.0, F = 2.162, P = 0.117） posttreatment, and only became significant after 12 weeks （27.5± 4.6 vs. 22.1 ± 1.9, F 4.968, P = 0.009）. Biomechanical properties such as the maximum load, maximum strength, and the stiffness for the SVF-FG group were significantly greater than that for the control group at 8 weeks＇ posttreatment （maximum load： 166.89 ± 11.62 N vs. 99.40 ± 5.70 N, P 〈 0.001： maximum strength： 8.22 ± 1.90 N/ram vs. 5.82 ±0.68 N/ram, P 〈 0.010： and the stiffness： 34.85±3.00 Pa vs. 24.57±5.72 Pa, P 〈 0.010）. Conclusion： Local application of ADSVF might lead to better tendon-bone healing in rabbit models.
