1.Assessing High-density Y-SNP Panels for Paternal Haplogroup Assignment in Forensic Practice
De-Qin ZHANG ; Chun-Nian WANG ; Lin-Lin LOU ; Meng NI ; Jing GAO ; Jiang HUANG ; Li JIANG
Progress in Biochemistry and Biophysics 2026;53(2):458-469
ObjectiveThe accuracy of Y-chromosome haplogroup assignment is crucial for tracing paternal lineage in male samples. With the advancement of high-throughput sequencing technologies, high-density Y-SNP genotyping from whole-genome or array-based data has become a standard method for determiningY-chromosome haplogroups. This study systematically evaluated the performance of 4 commonly used high-density SNP genotyping systems—namely, the Global Screening Array (GSA), Chinese Genotyping Array (CGA), Affymetrix array, and the 1240K capture panel—for haplogroup assignment. This work provides a reference for data comparison across different systems. MethodsWe extracted genotype data for the 4 Y-SNP panels from 30× whole-genome sequencing (WGS) data of 1 590 male samples from the 1000 Genomes Project. Additionally, GSA array genotype data from 384 relative pairs (spanning 1st- to 12th-degree relationships) from 109 Chinese Han families were collected. Haplogroup assignment was performed using Y-LineageTracker v1.3.0 software. We assessed the concordance and resolution of haplogroup assignments between the four Y-SNP panels and the WGS data. The consistency and resolution of haplogroup assignments were also evaluated for both the 1000 Genomes Project samples and the 109 family samples collected in this study. Furthermore, the impact of varying numbers of Y-SNPs on haplogroup assignment was examined. ResultsThe GSA and CGA panels demonstrated superior resolution and discrimination of haplogroup subclades compared with the other two panels. The haplogroup assignments from the GSA, CGA, and 1240K panels showed high concordance with WGS data, with consistency rates exceeding 88.70%, whereas the Affymetrix platform exhibited a significantly lower consistency rate of 61.89%. Specifically, the GSA and CGA panels consistently demonstrated superior performance compared with the other two panels in the assignment of haplogroups O-M175 and H-L901, achieving complete concordance (100%) for both haplogroups. In contrast, the Affymetrix panel erroneously assigned all individuals belonging to haplogroup O-M175 to haplogroup K2-M526. Furthermore, its accuracy for haplogroup H-L901 was exceedingly low, at merely 1.41%. This poor performance was characterized by the misassignment of 98.59% of H-L901 samples—specifically, 1.41% to J-M304 and a predominant 97.18% to F-M89. For haplogroup R-M207, all four panels exhibited uniformly high levels of consistency, with concordance values exceeding 94.00%. Notably, for haplogroup E-M96, the 1240K and Affymetrix panels outperformed the GSA and CGA panels in terms of concordance, representing the first instance in which these two panels surpassed the latter. Conversely, for haplogroups J-M304, Q-M242, and I-M170, all 4 panels showed relatively elevated misclassification rates, with the Affymetrix array demonstrating the poorest overall performance. None of the four panels showed any discordant haplogroup assignments among the familial relative pairs analyzed. A positive correlation was observed between the number of Y-SNPs (ranging from 1 000 to 10 000) and classification consistency; however, classification consistency plateaued when the number of Y-SNPs exceeded 10 000. Furthermore, a random sampling analysis conducted on the GSA and CGA panels demonstrated that the haplogroup misclassification rate exhibited negligible fluctuation across the Y-SNP range of 500 to 1 000. Conversely, a marked enhancement in classification consistency was observed as the number of markers increased from 1 000 to 5 000, ultimately reaching a plateau within the interval of 5 000 to 8 000 markers. ConclusionThese findings indicate that the GSA and CGA panels provide high resolution and concordance, delivering reliable Y-haplogroup assignment for forensic investigations.
2.Assessing High-density Y-SNP Panels for Paternal Haplogroup Assignment in Forensic Practice
De-Qin ZHANG ; Chun-Nian WANG ; Lin-Lin LOU ; Meng NI ; Jing GAO ; Jiang HUANG ; Li JIANG
Progress in Biochemistry and Biophysics 2026;53(2):458-469
ObjectiveThe accuracy of Y-chromosome haplogroup assignment is crucial for tracing paternal lineage in male samples. With the advancement of high-throughput sequencing technologies, high-density Y-SNP genotyping from whole-genome or array-based data has become a standard method for determiningY-chromosome haplogroups. This study systematically evaluated the performance of 4 commonly used high-density SNP genotyping systems—namely, the Global Screening Array (GSA), Chinese Genotyping Array (CGA), Affymetrix array, and the 1240K capture panel—for haplogroup assignment. This work provides a reference for data comparison across different systems. MethodsWe extracted genotype data for the 4 Y-SNP panels from 30× whole-genome sequencing (WGS) data of 1 590 male samples from the 1000 Genomes Project. Additionally, GSA array genotype data from 384 relative pairs (spanning 1st- to 12th-degree relationships) from 109 Chinese Han families were collected. Haplogroup assignment was performed using Y-LineageTracker v1.3.0 software. We assessed the concordance and resolution of haplogroup assignments between the four Y-SNP panels and the WGS data. The consistency and resolution of haplogroup assignments were also evaluated for both the 1000 Genomes Project samples and the 109 family samples collected in this study. Furthermore, the impact of varying numbers of Y-SNPs on haplogroup assignment was examined. ResultsThe GSA and CGA panels demonstrated superior resolution and discrimination of haplogroup subclades compared with the other two panels. The haplogroup assignments from the GSA, CGA, and 1240K panels showed high concordance with WGS data, with consistency rates exceeding 88.70%, whereas the Affymetrix platform exhibited a significantly lower consistency rate of 61.89%. Specifically, the GSA and CGA panels consistently demonstrated superior performance compared with the other two panels in the assignment of haplogroups O-M175 and H-L901, achieving complete concordance (100%) for both haplogroups. In contrast, the Affymetrix panel erroneously assigned all individuals belonging to haplogroup O-M175 to haplogroup K2-M526. Furthermore, its accuracy for haplogroup H-L901 was exceedingly low, at merely 1.41%. This poor performance was characterized by the misassignment of 98.59% of H-L901 samples—specifically, 1.41% to J-M304 and a predominant 97.18% to F-M89. For haplogroup R-M207, all four panels exhibited uniformly high levels of consistency, with concordance values exceeding 94.00%. Notably, for haplogroup E-M96, the 1240K and Affymetrix panels outperformed the GSA and CGA panels in terms of concordance, representing the first instance in which these two panels surpassed the latter. Conversely, for haplogroups J-M304, Q-M242, and I-M170, all 4 panels showed relatively elevated misclassification rates, with the Affymetrix array demonstrating the poorest overall performance. None of the four panels showed any discordant haplogroup assignments among the familial relative pairs analyzed. A positive correlation was observed between the number of Y-SNPs (ranging from 1 000 to 10 000) and classification consistency; however, classification consistency plateaued when the number of Y-SNPs exceeded 10 000. Furthermore, a random sampling analysis conducted on the GSA and CGA panels demonstrated that the haplogroup misclassification rate exhibited negligible fluctuation across the Y-SNP range of 500 to 1 000. Conversely, a marked enhancement in classification consistency was observed as the number of markers increased from 1 000 to 5 000, ultimately reaching a plateau within the interval of 5 000 to 8 000 markers. ConclusionThese findings indicate that the GSA and CGA panels provide high resolution and concordance, delivering reliable Y-haplogroup assignment for forensic investigations.
3.Effectiveness of an online patient education video for transcatheter aortic valve implantation.
Samuel Ji Quan KOH ; Jonathan YAP ; Chun Yen KOK ; Yilin JIANG ; Yu Jen LOO ; Michelle Wei Ling HO ; Yu Fei LIM ; See Hooi EWE ; Mohammed Rizwan AMANULLAH ; Zameer Abdul AZIZ ; Sivaraj GOVINDASAMY ; Victor CHAO ; Kay Woon HO
Annals of the Academy of Medicine, Singapore 2025;54(3):197-199
4.Innovation and application of traditional Chinese medicine dispensing promoted through integration of whole-process data elements.
Huan-Fei YANG ; Si-Yu LI ; Chen-Qian YU ; Jian-Kun WU ; Fang LIU ; Li-Bin JIANG ; Chun-Jin LI ; Xiang-Fei SU ; Wei-Guo BAI ; Hua-Qiang ZHAI ; Shi-Yuan JIN ; Yong-Yan WANG
China Journal of Chinese Materia Medica 2025;50(11):3189-3196
As a new type of production factor that can empower the development of new quality productivity, the data element is an important engine to promote the high quality development of the industry. Traditional Chinese medicine(TCM) dispensing is the most basic work of TCM clinical pharmacy, and its quality directly affects the clinical efficacy of TCM. The integration of data elements and TCM dispensing can stimulate the innovation and vitality of the TCM dispensing industry and promote the high-quality and sustainable development of the industry. A large-scale, detailed, and systematic study on TCM dispensing was conducted. The innovative practice path of data fusion construction in the whole process of TCM dispensing was investigated by integrating the digital resources "nine full activities" of TCM dispensing, creating the digital dictionary of "TCM clinical information data elements", and exploring innovative applications of TCM dispensing driven by data and technology, so as to promote the standardized, digital, and intelligent development of TCM dispensing in medical health services. The research content of this project was successfully selected as the second batch of "Data element×" typical cases of National Data Administration in 2024, which is the only selected case in the field of TCM.
Medicine, Chinese Traditional/methods*
;
Drugs, Chinese Herbal
;
Humans
5.Biomechanical finite element analysis of American Chiropractic intervention on the third lumbar transverse process syndrome based on imaging.
Ling-Feng ZHU ; Hai-Jie YU ; Hai-Fen YING ; Ben-Bao CHEN ; Xiao-Chun XIONG ; Li-Jiang LYU
China Journal of Orthopaedics and Traumatology 2025;38(4):403-410
OBJECTIVE:
To explore the displacement and pressure distribution of American Chiropractic in a model of third lumbar syndrome based on finite element analysis.
METHODS:
On March 2021, CT and MRI images of a 23-year-old male patient with right third lumbar syndrome were selected. A 3D stl model was established using Mimics and CATIA, and the data was imported into Hypermesh, Abaqus & ANSYS. The elastic modulus and Poisson's ratio of the affected side material were adjusted to establish its finite element model. Based on the comparison of the operating positions and routines of the American Chiropractic and the lumbar spine oblique pull method, but with differences in the focus and direction of force, the experimental group simulated the American Chiropractic with the healthy side (left side) lying position of the model. The upper endplate of L3 and the lower part below L3 twisted accordingly with the body position, we applied a vertical forward thrust of 246 N to the plane formed by the L4, L5 spinous processes and L4 upper articular processes;The control group simulates the oblique pull method of the lumbar spine, requiring the model to lie on the healthy side (left side), fix the upper endplate of L4, and perform a horizontal rotation along the longitudinal axis of L3 vertebral body. At this time, the contact force in the upward direction is also set to 246 N. Compare the displacement and stress differences between the L1-L5 intervertebral bodies, intervertebral discs, articular processes, and transverse process muscles in two intervention models.
RESULTS:
① Under safe load conditions, a test force of 246 N was applied to the model, and the maximum vertebral displacement occurred on the right side of the L3 vertebral body (1.197 mm) after manual intervention in the control group. The vertebral displacement between L1-L5 induced by manual intervention in the experimental group was smaller than that of the control group's manual intervention (P<0.05). ② The maximum vertebral body stress occurred on the right side of the L3 vertebral body after manual intervention in the control group (98.425 MPa). The stress on each vertebral body formed by the experimental group's manual intervention was lower than that of the control group's manual intervention (P<0.05). ③The maximum intervertebral disc stress occurred on the right side of the L2,3 intervertebral disc (6.282 MPa) after manual intervention in the control group. ④ The maximum joint process stress occurred on the right side of the L4 upper joint process after manual intervention in the experimental group (1.587 MPa). The joint process stress on the left side below L1 and the left side above and below L2 induced by manual intervention in the experimental group was lower than that of the control group (P<0.05). ⑤The maximum stress on the intertransverse process muscle was observed at the right lateral L3 process end (31.960 MPa) of L3,4 in the control group after manual intervention. The stress on the L2,3 and L4,5 segments of the intertransverse process muscle induced by manual intervention in the experimental group was lower than that of the control group's manual intervention (P<0.05).
CONCLUSION
The mechanical feedback of the L1-L5 vertebral body, the lower left side of the articular process L1, the upper and lower left side of the articular process L2, and the L2,3 and L4,5 segments of the transverse process muscle in the model indicates that performing American Chiropractic for the treatment of third lumbar transverse process syndrome can accurately hit the target pain point and allow the patient's tissue to form a low stress and low tension state after manual operation, thereby reducing the possibility of tissue damage caused by hypertonia after intervertebral joint movement, making it relatively safe. The application of American Chiropractic will be a new supplement to the traditional treatment plan for third lumbar transverse process syndrome.
Humans
;
Finite Element Analysis
;
Male
;
Lumbar Vertebrae/physiopathology*
;
Biomechanical Phenomena
;
Young Adult
;
Manipulation, Chiropractic
;
Adult
;
Tomography, X-Ray Computed
;
Magnetic Resonance Imaging
6.Clinical observation of proximal femoral nail antirotation internal fixation in the treatment of Basicervical fracture in the elderly.
Xue-Kun HAN ; Ai-Chun WEI ; Jian-Feng JIANG
China Journal of Orthopaedics and Traumatology 2025;38(7):676-679
OBJECTIVE:
To investigate the clinical efficacy and key techniques of proximal femoral nail antirotation (PFNA) in the treatment of Basicervical fracture.
METHODS:
A retrospective analysis was performed on 23 patients with Basicervical fractures who underwent closed reduction and PFNA internal fixation under C-arm X-ray fluoroscopy between March 2019 and March 2023. The cohort included 9 males and 14 females. The age distributions was as follows:7 individuals aged from 60 to 69 years old, 5 individuals aged from 70 to 79 years old, 9 individuals aged from 80 to 89 years old, and 2 individuals aged from 90 to 99 years old. The operative time, intraoperative blood loss and fracture healing time were recorded. Hip function was evaluated according to the Harris score.
RESULTS:
All 23 patients successfully underwent the operation, with the operation time ranging from 30 to 75 minutes and an average of (60.51±9.82) minutes. The intraoperative blood loss varied from 100 to 180 ml, averaging (145.36±25.21) ml, and the hidden blood loss ranged from 150 to 220 ml, with an average of (189.00±30.12) ml. All 23 patients were followed up, and the duration ranged from 6 to 28 months, with an average of (18.56±6.35) months. All incisions healed well, the fracture healing time ranged from 12 to 15 weeks, with an average of (14.30±1.82) weeks. During the follow-up period, one patient experienced a spiral blade cut-out, and no complications such as internal fixation rupture, avascular necrosis of the femoral head, fracture nonunion, hip varus deformity, or refracture occurred. At the latest follow-up, the results were evaluated by Harris hip function score:17 cases were excellent, 4 cases were good, 1 case was fair, and 1 case was poor.
CONCLUSION
PFNA internal fixation in the treatment of Basicervical fracture has the advantages of simple operation, less trauma, short operation time, rigid fixation, postoperative functional recovery and so on, which is an ideal fixation for elderly Basicervical fracture.
Humans
;
Female
;
Male
;
Aged, 80 and over
;
Aged
;
Retrospective Studies
;
Bone Nails
;
Middle Aged
;
Fracture Fixation, Internal/methods*
;
Fracture Healing
;
Fracture Fixation, Intramedullary
7.Percutaneous endoscopic discectomy with lateral approach and dual-channel method for the treatment of highly free lumbar disc herniation.
Qi-Ming CHEN ; Chun-Hua YU ; Gang CHEN ; Han-Rong XU ; Yi-Biao JING ; Yin-Jiang LU ; Shan-Chun TAO ; Jian-Bo WU
China Journal of Orthopaedics and Traumatology 2025;38(9):924-929
OBJECTIVE:
To explore clinical efficacy of percutaneous endoscopic discectomy with a lateral approach and dual-channel method in treating highly free lumbar disc herniation(LDH).
METHODS:
A retrospective analysis was conducted on 54 patients with highly free LDH who were treated with spinal endoscopic techniques from January 2021 to December 2022. Twenty-seven patients were treated with lateral approach dual-channel(lateral approach dual-channel group), including 16 males and 11 females, with an average age of (54.6±10.5) years old. Twenty-seven patients were treated with unilateral biportal endoscopic (UBE group), including 17 males and 10 females, with an average age of (52.9±12.3) years old. The number of intraoperative fluoroscopy, operation time and hospital stay, as well as visual analogue scale (VAS) and Oswestry diability index (ODI) of low back and leg pain between two patients before operation, 1 day, 1, 3, and 12 months after operation, and the efficacy was evaluated by the modified MacNab criteria at 12 mohths after operation.
RESULTS:
All patients were successfully completed surgical and were followed up, the time raged from 12 to 22 months with an average of (13.57±4.12) months. There was no statistically significant difference in operation time between two groups (P>0.05). The hospital stay of lateral approach dual-channel group was (3.9±1.1) days, which was shorter than that of UBE group (6.5±1.4) days, the number of intraoperative fluoroscopy in lateral approach dual-channel group was (12.7±2.1) times, which was more than that in UBE group (6.6±1.3) times, the differences were statistically significant (t=5.197, -7.532;P<0.05). VAS and ODI for low back pain at 1 day and 1 month after operation, and VAS for leg pain at 1 day after operation of lateral approach dual-channel group were superior to those of UBE group, and the differences were statistically significant (P<0.05). However, there were no statistically significant differences in VAS and ODI for low back and leg pain between two groups before operation and 3 and 12 months after operation (P>0.05). VAS and ODI of low back and leg pain were significantly improved at each time point before and after operation in both groups, and the difference were statistically significant (P<0.05). At 12 months after operation, according to the modified MacNab criteria, the excellent and good rates of therapeutic effects between lateral approach dual-channel group and UBE group were 92.6% (25/27) and 88.9% (24/27), respectively, and the difference was not statistically significant (χ2=0.22, P>0.05).
CONCLUSION
For patients with highly free lumbar intervertebral disc protrusion, both of lateral approach dual-channel method and UBE endoscopic surgery are safe and effective. Endoscopic surgery with lateral approach and dual-channel method could be performed under local anesthesia, allowing for the removal of the nucleus pulposus under direct vision. It is simpler, more efficient.
Humans
;
Male
;
Female
;
Intervertebral Disc Displacement/surgery*
;
Middle Aged
;
Diskectomy, Percutaneous/methods*
;
Lumbar Vertebrae/surgery*
;
Endoscopy/methods*
;
Adult
;
Retrospective Studies
;
Aged
8.Multicenter randomized controlled trial of Yiqi Huoxue formula() for the treatment of ruptured lumbar disc herniation.
Yu ZHU ; Zhi-Qiang WANG ; Shun LIN ; Ying-Ying YAO ; Xue-Qiang SHEN ; Xiao-Chun LI ; Feng YU ; Xiao-Yang XIONG ; Yi SONG ; Meng-Fei CHEN ; Peng-Fei YU ; Hong JIANG ; Jin-Tao LIU
China Journal of Orthopaedics and Traumatology 2025;38(11):1112-1118
OBJECTIVE:
To observe the clinical symptoms and MRI outcomes of patients with ruptured lumbar disc herniation(LDH) through a multicenter randomized controlled study, and to evaluate the clinical efficacy and safety of Yiqi Huoxue formula() in the treatment of this disease.
METHODS:
A total of 160 outpatients and inpatients with ruptured LDH admitted to 4 medical centers from January 2023 to June 2023 were selected and randomly divided into the Yiqi Huoxue formula group and the control group, with 80 patients in each group. In the Yiqi Huoxue formula group, there were 43 males and 37 females, with an age of (41.03±9.56) years and a disease duration of (10.45±25.37) days, and the patients were treated with Yiqi Huoxue formula. In the control group, there were 34 males and 46 females, with an age of (42.14±8.73) years and a disease duration of (11.31±21.14) days;during the acute phase, patients in this group could take celecoxib capsules orally, and methylcobalamin orally at the same time. The Japanese Orthopaedic Association (JOA) score, Oswestry disability index (ODI), changes in the volume of herniated disc tissue on MRI, herniation rate, and absorption rate were recorded at the time of enrollment and during follow-ups at the 3rd, 6th, and 12th month after treatment.
RESULTS:
A total of 156 patients completed the clinical follow-up, and 4 patients withdrew midway. The clinical symptoms of all patients who completed the study were relieved to varying degrees, and reabsorption of herniated disc tissue was observed in all patients in the Yiqi Huoxue formula group after treatment. For the JOA score:in the Yiqi Huoxue formula group, it was (10.73±2.76) points before treatment and (24.65±2.19) points at the 12th month after treatment;in the control group, it was (11.01±1.20) points before treatment and (17.07±3.26) points at the 12th month after treatment. For the ODI score:in the Yiqi Huoxue formula group, it was (26.21±3.55) points before treatment and (5.65±2.19) points at the 12th month after treatment;in the control group, it was (27.92±2.51) points before treatment and (9.09±2.15) points at the 12th month after treatment. At the 12th month after treatment, the JOA and ODI scores of both groups were better than those before treatment, and the scores of the Yiqi Huoxue formula group were better than those of the control group, with statistically significant differences (P<0.05). In terms of the herniated disc volume and herniation rate on MRI, the Yiqi Huoxue formula group was superior to the control group, with statistically significant differences(P<0.05). Reabsorption occurred in 56.96%(45/79) of patients in the Yiqi Huoxue formula group, which was significantly higher than the 37.66%(29/77) in the control group.
CONCLUSION
After treatment with Yiqi Huoxue formula, patients with ruptured LDH show significant improvement in clinical symptoms and a marked reduction in the volume of herniated discs. During the follow-up period, no obvious adverse drug reactions are observed in patients, and no recurrence of symptoms is found at the last follow-up, indicating that the formula has safe and reliable efficacy.
Humans
;
Male
;
Female
;
Intervertebral Disc Displacement/drug therapy*
;
Adult
;
Drugs, Chinese Herbal/adverse effects*
;
Middle Aged
;
Lumbar Vertebrae
9.Intramedullary administration of tranexamic acid reduces bleeding in proximal femoral nail antirotation surgery for intertrochanteric fractures in elderly individuals: A randomized controlled trial.
Xiang-Ping LUO ; Jian PENG ; Ling ZHOU ; Hao LIAO ; Xiao-Chun JIANG ; Xiong TANG ; Dun TANG ; Chao LIU ; Jian-Hui LIU
Chinese Journal of Traumatology 2025;28(3):201-207
PURPOSE:
Intertrochanteric fractures undergoing proximal femoral nail antirotation (PFNA) surgery are associated with significant hidden blood loss. This study aimed to explore whether intramedullary administration of tranexamic acid (TXA) can reduce bleeding in PFNA surgery for intertrochanteric fractures in elderly individuals.
METHODS:
A randomized controlled trial was conducted from January 2019 to December 2022. Patients aged over 60 years with intertrochanteric fractures who underwent intramedullary fixation surgery with PFNA were eligible for inclusion and grouped according to random numbers. A total of 249 patients were initially enrolled, of which 83 were randomly allocated to the TXA group and 82 were allocated to the saline group. The TXA group received intramedullary perfusion of TXA after the bone marrow was reamed. The primary outcomes were total peri-operative blood loss and post-operative transfusion rate. The occurrence of adverse events was also recorded. Continuous data was analyzed by unpaired t-test or Mann-Whitney U test, and categorical data was analyzed by Pearson Chi-square test.
RESULTS:
The total peri-operative blood loss (mL) in the TXA group was significantly lower than that in the saline group (577.23 ± 358.02 vs. 716.89 ± 420.30, p = 0.031). The post-operative transfusion rate was 30.67% in the TXA group and 47.95% in the saline group (p = 0.031). The extent of post-operative deep venous thrombosis and the 3-month mortality rate were similar between the 2 groups.
CONCLUSION
We observed that intramedullary administration of TXA in PFNA surgery for intertrochanteric fractures in elderly individuals resulted in less peri-operative blood loss and decreased transfusion rate, without any adverse effects, and is, thus, recommended.
Humans
;
Tranexamic Acid/administration & dosage*
;
Hip Fractures/surgery*
;
Male
;
Aged
;
Female
;
Fracture Fixation, Intramedullary/adverse effects*
;
Blood Loss, Surgical/prevention & control*
;
Antifibrinolytic Agents/administration & dosage*
;
Aged, 80 and over
;
Bone Nails
;
Middle Aged
;
Blood Transfusion/statistics & numerical data*
10.Interposition of acellular amniotic membrane at the tendon to bone interface would be better for healing than overlaying above the tendon to bone junction in the repair of rotator cuff injury.
Jiang-Tao WANG ; Chun-Bao LI ; Jia-Ting ZHANG ; Ming-Yang AN ; Gang ZHAO ; Yu-Jie LIU
Chinese Journal of Traumatology 2025;28(3):187-192
PURPOSE:
The retear rate of rotator cuff (RC) after surgery is high, and the rapid and functional enthesis regeneration remains a challenge. Whether acellular amniotic membrane (AAM) helps to promote the healing of tendon to bone and which treatment is better are both unclear. The study aims to investigate the effect of AAM on the healing of RC and the best treatment for RC repair.
METHODS:
Thirty-three Sprague Dawley rats underwent RC transection and repair using microsurgical techniques and were randomly divided into the suturing repair only (SRO) group (n = 11), the AAM overlaying (AOL) group (n = 11), and the AAM interposition (AIP) group (n = 11), respectively. Rats were sacrificed at 4 weeks, then examined by subsequent micro-CT, and evaluated by histologic and biomechanical tests. The statistical analyses of one-way ANOVA or Kruskal-Wallis test were performed using with SPSS 23.0. A p < 0.05 was considered a significant difference.
RESULTS:
AAM being intervened between tendon and bone (AIP group) or overlaid over tendon to bone junction (AOL group) in a rat model, promoted enthesis regeneration, increased new bone and cartilage generation, and improved collagen arrangement and biomechanical properties in comparison with suturing repair only (SRO group) (AOL vs. SRO, p < 0.001, p = 0.004, p = 0.003; AIP vs. SRO, p < 0.001, p < 0.001, p < 0.001). Compared with the AOL group, the AIP group had better results in micro-CT evaluation, histological score, and biomechanical testing (p = 0 0.039, p = 0.011, p = 0.003, respectively).
CONCLUSION
In the RC repair model, AAM enhanced regeneration of the tendon to bone junction. This regeneration was more effective when the AAM was intervened at the tendon to bone interface than overlaid above the tendon to bone junction.
Animals
;
Rats, Sprague-Dawley
;
Rotator Cuff Injuries/surgery*
;
Amnion/transplantation*
;
Rats
;
Wound Healing
;
Rotator Cuff/surgery*
;
Male
;
X-Ray Microtomography
;
Tendons/surgery*
;
Biomechanical Phenomena

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