Abstract:From July 2012 to July 2022, the Orthopaedic Journal of China has published 240 issues with 6 075 articles in a total. The main academic hotspots involved osteoarthritis, spinal degenerative diseases, osteoporotic fractures, spinal and limb deformity correction, high-tech application in orthopaedic practice and perioperative rehabilitation, etc. The specific situation of the manuscript publication and the citations of the published articles were analyzed in this review. This journal always sincerely served the authors and continuously im- proved the academic quality during the past 10 years. In the face of the fact that some manuscripts were good and some were poor with aca- demic misconduct in some extent, our measures were to improve the manuscript review process, to play the role of peer review and expert re- view, and to implement the system of "three reviews and three checks" with high quality. This article also introduced honor obtained and problem existed in this journal past 10 years.

Abstract:[Objective] To compare the clinical outcomes of unilateral biportal endoscopy (UBE) versus percutaneous interlaminar endo- scopic discectomy (PIED) for lumbar lateral recess stenosis accompanied with disc herniation. [Methods] A total of 60 patients received en- doscopic surgeries for single-segment lumbar lateral recess stenosis accompanied by disc herniation in our hospital from November 2018 to November 2020. Based on preoperative doctor- patient communication, 30 patients had UBE performed, while the other 30 patients had PIED conducted. The documents regarding to perioperative period, follow-up and laboratory and imaging examinations were compared be- tween the two groups. [Results] The UBE group consumed significantly shorter operation time, whereas had significantly longer incision than the PIED group (P＜0.05) , although there were no statistical differences between the two groups in terms of blood loss, fluoroscopy times, time to return walking postoperatively, healing grade of incision and hospital stay (P＞0.05) . There was no significant difference in the time to re- sume full-weight bearing activity between the two groups (P＞0.05) . As time went during follow-up lasted for (21.48±6.82) months on an aver- age, the VAS scores of low back pain and leg pain, as well as ODI scores decreased significantly (P＜0.05) , whereas the JOA scores increased significantly in both groups (P＜0.05) . However, there were no statistically significant differences in abovementioned items between the two groups at any matching time points (P＞0.05) . In terms of auxiliary examinations, the blood myoglobin, anteroposterior diameter of lateral re- cess and the area of the involved spinal canal increased significantly (P＜0.05) , while the intervertebral space height remained unchanged postoperatively compared with those preoperatively in both groups (P＞0.05) , which were not statistically significantly different between the two groups at any corresponding time points (P＞0.05) . [Conclusion] Both UBE and PIED are effective and minimally invasive techniques for lumbar lateral recess stenosis accompanied with disc herniation, but UBE takes an advantage of shortening operation time.

Abstract:

[Objective] To explorthe factors affecting plumpness of balloon dilation in percutaneous kyphoplasty (PKP) for osteoporotic vertebral compression fractures (OVCF) . [Methods] A retrospective study was done on total of 153 patients who received PKP for OVCF in our hospital from January 2018 to December 2019. According to the intraoperative balloon dilation shape, the patients were divided into the full-dilation group (the FD) and the non-full dilation group (the NFD) . Univariate comparison and binary multiple logistic regression were conducted to search the factors influencing the intraoperative balloon dilation in PKP. [Results] All patients were successfully operated on without serious complications. The intraoperative fluoroscopy confirmed that the balloon fully dilated in 103 patients, accounting for 67.32%, while not fully dilated in 50 patients, accounting for 32.68%. In term of univariate comparison, although there were no significant differences in age, gender, BMI, BMD, vertebral segment distribution, operation time, bone cement injection amount, postoperative walking time and the time to resum full- weight-bearing activity between the two groups (P>0.05) , the NFD group had significantly longer course of disease (P<0.05) , significantly higher incidence of intravertebral vaccum phenomina (IVP) (P<0.05) , significantly higher ratio of vertebral com- pression and greater local Cobb angle (P<0.05) , and significantly higher incidence of vertebral re-fracture after PKP (P<0.05) compared with the FD group. As results of binary multifactor logistic regression, the IVP (OR=74.189, P<0.05) , the greater local Cobb angle (OR= 3.438, P<0.05) , higher ratio of vertebral compression (OR=1.270, P<0.05) , and longer course of disease (OR=1.057, P<0.05) were the in- dependent risk factors for inadequate balloon dilation in PKP. [Conclusion] The IVP, large local cobb angle, severe vertebral compression and long course of disease are the factors related to the incomplete balloon dilation in PKP, which should be paid attention to. In addition, inadequate balloon dilation also increases the risk of refracture of the injured vertebrae.

Abstract:[Objective] To investigate the cardiopulmonary function in patients with congenital scoliosis (CS) , and further to discuss the effect of Cobb angle of the thoracic curve on cardiopulmonary function. [Methods] From October 2020 to October 2021, a total of 50 pa- tients who suffered from CS were included into this study. Based on the extent of scoliosis, 30 patients were fall into the severe groups with Cobb angle＜90°, while the remaining 20 patients were into the moderate group with Cobb angle of ≥40°~＜90°. The parameters related to cardiac structure, cardiac function and pulmonary function were measured and compared between the two groups. In addition, correlation analysis were conducted to search the relationships between the Cobb’s angle and parameters regarding the cardiac structure, cardiac func- tion and pulmonary function. [Results] Although the cardiac structure and function parameter in all patients of both groups remained in the normal ranges, the severe group proved significantly inferior to the moderate group in terms of atrial size, ventricular size and diastolic func- tion, including E/A and e’/a’ parameters (P＜0.05) . In addition, both groups got decreased pulmonary function in some extent, and the se- vere group was significantly inferior to the moderate group in terms of restrictive ventilation function, small airway function and ventilation function parameters (P＜0.05) . As results of correlation analysis, the Cobb angle in these CS patients proved significantly negatively related to the left atrial size, involving LA, LVD and LVS, as well as diastolic function, involving E/A and e’/a’. Moreover, the Cobb angle was also significnalty negatively correlated with restrictive ventilatory function parameters (P＜0.05) . [Conclusion] The Cobb angle does impact the cardiac structure and function, in which the diastolic function and diameter of LA and LV decreases with the increasing of Cobb angle. Fur- thermore, the Cobb angle also influence pulmonary function, the larger Cobb angle, the worse pulmonary function.

Abstract:[Objective] To evaluate the clinical efficacy of transcranial direct current stimulation (tDCS) combined with core exercise for non-specific low back pain (NLBP) . [Methods] From June 2017 to June 2020, 64 patients with NLBP were enrolled in this study and random- ly divided into two groups. Among them, 32 patients were treated with transcranial electrical stimulation combined with core exercise (com- bined group) , while the remaining 32 patients were treated with conventional physical therapy (conventional group). The early and follow-up consequences were compared between the two groups. [Results] The treatment period of the combined group was shorter than that of the conven- tional group, but the difference was not statistically significant (P＞0.05) . There were no adverse reactions during treatment without a significant difference in treatment compliance between the two groups (P＞0.05) . However, the treatment cost and patient satisfaction in the combined group were significantly higher than those in the conventional group (P＜0.05) . All patients were followed up for an average of (9.34±4.12) months. The combined group proved significantly superior to the conventional group in the time to recover previous work and recurrence rate (P＜ 0.05) . The combined group got significant decline in terms of VAS and ODI scores, as well as core instability parameters, such as OSI, APSI and MLSI (P＜0.05) , whereas significant increment of JOA score after treatment compared with those before treatment (P＜0.05) . By contrast, the con- ventional group also got significant improvements in terms of VAS, ODI and JOA scores after treatment compared with those before treatment (P＜ 0.05) , however, remained unchanged in the OSI, APSI and MLSI (P＞0.05) . Although there were no significant differences in the abovesaid items between the two groups before treatment (P＜0.05) , the combined group proved significantly superior to the conventional group in all above- mentioned parameters at the end of treatment, 6 months after treatment and the last follow-up (P＜0.05) . [Conclusion] The transcranial direct current stimulation combined with core exercise does effectively relieve pain, improve function and postural control ability for NLBP.

Abstract:[Objective] To evaluate the efficacy of selective posterior rhizotomy (SPR) in improving lower limb gait and joint kinematics of cerebral palsy in children by a meta-analysis. [Methods] Literature retrieval was carried out in PubMed, Embase, Web of Science, Co- chrane Library, CBM, CNKI, Wanfang and VIP electronic databases to search the controlled studies on SPR for cerebral palsy. At least 2 re- searchers independently screened the literature and extracted data. The quality of the included RCTs was assessed by using the Cochrane 5.1.0, a bias risk assessment tool, and then the methodological quality of nRCTs by using MINORS. Finally, the meta-analysis was conduct- ed by Revman 5.3 software. [Results] A total of 4 115 articles were retrieved, including 1 829 in English and 2 284 in Chinese. A total of 219 patients with cerebral palsy were included in the meta-analysis after screening, including 112 in the SPR group and 107 in the nonSPR group. As results of meta-analysis, the SPR improved gait (step length) and joint kinematics, involving knee extension, ankle dorsiflex- ion, ankle plantar flexion, foot forward angle, which proved significantly better than those of the non-SPR group (P＜0.05) . However, there were no significant differences in step frequency, step speed, hip flexion and extension, hip extension, knee flexion and extension, knee swing, pelvic inclination and pelvic rotation angle between SPR group and non-SPR group (P＞0.05) . [Conclusion] The SPR does improve gait quality and kinematics parameters of knee and ankle in children with cerebral palsy, which is more obviously in the distal joint of the lower limb.

Abstract:Medial compartmental osteoarthritis of the knee is a common degenerative disease and the cause of disability in the middleaged and elderly. High tibial osteotomy (HTO) has been proved an effective treatment for medial compartment osteoarthritis of the knee. However, the indication selection and surgical technique of HTO remain difficulties in some extent. Improper indication selection or poor surgical manipulation will lead to unacceptable clinical outcome, even accelerate osteoarthritis progression. At present, finite element analy- sis is the main method to simulate the stress distribution of knee joint after HTO and predict the clinical outcomes. In this paper, finite ele- ment analysis on knee stress distribution and its variations after high tibial osteotomy, as well as the design and placement of implants were analyzed and summarized to provide a theoretical reference for clinical practice to improve surgical efficacy and clinical results.

Abstract:The pathogenesis of ruptured lumbar disc herniation is that the nucleus pulposus of the lumbar intervertebral disc break- through the posterior longitudinal ligament and prolapse or even leaves the original intervertebral space with up or down migration. This type of lumbar disc herniation has the characteristics of serious compression, severe symptoms and the possibility of nerve damage, usually treat- ed with surgery. In recent years with the in-depth study of clinical and imaging, it is found that the nucleus pulposus of ruptured lumbar disc herniation is more prone to be resorbed, and more suitable for conservative treatment, which provides a clinical basis for conservative treat- ment of ruptured lumbar disc herniation. This article reviews the clinical characteristics, mechanism of resorption, safety and risk of conser- vative treatment for ruptured lumbar disc herniation.

Abstract:Osteoarthritis (OA) is a degenerative disease caused by irreversible and progressive destruction of articular cartilage. Howev- er, there is no effective method to delay the progression of OA. In recent years, more and more evidences show that the occurrence and devel- opment of OA is correlated with the increase of senescent cells in joint tissue, and senescent cells and their senescent associated secretory phenotype (SASP) have been implicated in cartilage degeneration and OA. Targeted clearance of senescent cells can prevent articular carti- lage degeneration and OA progression. In view of the important role of cell senescence in OA, this paper reviews the progress of the causal re- lationship between cell senescence and OA, the potential cellular and molecular mechanisms of cell senescence leading to the occurrence and development of OA, as well as targeted removal of senescent cells in OA therapy.

Abstract:Treatment of spinal tuberculosis with paraspinal or epidural abscesses is a challenge for orthopedic surgeons. The classical surgical method of spinal tuberculosis, such as open debridement and spinal internal fixation, consumed longer operation time, with high risk, great iatrogenic trauma and certain impact on the immunity of patients, which is unacceptable for the patients with poor general condi- tions. With the development of technique and equipment, endoscopic spinal surgery is becoming more and more popular. In this paper, we reported a case of lumbar tuberculosis with psoas major muscle and spinal canal abscess treated endoscopically in our department, and re- viewed literatures on minimally invasive surgery for lumbar tuberculosis accompanied with psoas major and spinal canal abscess to provide a reference for orthopaedic clinicians.

Abstract:[Objective] To investigate the effect of 1,25 dihydroxyvitamin D3 on macrophage polarization in ankylosing spondylitis (AS) and its regulation mechanism by Toll-like receptor 4 (TLR4) /myeloid differentiation factor 88 (MyD88) /nuclear factor-κB (NF-κB) signal pathway. [Methods] Phorbol ester was used to induce human monocyte line THP1 differentiate into macrophages. Subsequently, the cells were cultured with 5% serum of healthy subjects (normal group) , 5% AS patient’s serum (the AS group) , whereas 5% serum of AS patients, and 1 ml of 100 nmol/L 1,25-dihydroxyvitamin D3 solution (the trial group) . ELISA method was used to detect the content of interleukin10 (IL-10) , IL-6 and tumor necrosis factor-α (TNF-α) in the supernatant of each group of cells. Western blot was used to detect the cell signaling pathway related protein expression. [Results] Compared with the normal group, the AS group and the trial group had significantly decreased IL-10 in the cell supernatant, while significantly increased IL-6 and TNF-α in the cell supernatant, as well as the expression of TLR4, MyD88, NF-κB, which were statistically significant (all P＜0.05) . Compared with the AS group, the trial group had significantly in- creased IL-10 content in the cell supernatant, whereas significantly decreased IL- 6 and TNF-α, as well as expression levels of TLR4, MyD88, and NF-κB with statistically significant differences (P＜0.05) . [Conclusion] 1,25-dihydroxyvitamin D3 might regulate polarization process of macrophages in ankylosing spondylitis by the TLR4/MyD88/NF-κB signaling pathway.

Abstract:[Objective] To explore the role of medial collateral ligament (MCL) and radial head (RH) on elbow valgus stability, and to evaluate the outcomes of MCL repair and RH fracture fixation alone or in combination. [Methods] Six adult cadaveric bone-ligament speci- mens were treated and measured successively as follows: intact specimens, MCL cutting, MCL repair, MCL cutting +RH fracture, MCL re- pair +RH fracture, MCL cutting +RH fixation, MCL repair +RH fixation and MCL repair +RH resection. The valgus angular displacement (VAD) was measured under 1.5 N · m valgus loading at 0°~120° flexions of the elbow. [Results] The VAD at 0° of elbow flexion ranked down-up as follows: intact specimen ＜ MCL repair +RH fixation ＜ MCL repair ＜ MCL repair +RH fracture ＜ MCL repair +RH resection ＜ MCL cutting ＜ MCL cutting +RH fixation ＜ MCL cutting +RH fracture, with statistically significant overall difference (P＜0.05) . In term of pairwise comparison, there was no significant difference in VAD between intact specimens, MCL repair, MCL repair +RH fixation, MCL re- pair +RH fracture, MCL repair +RH resection (P＞0.05) , but the above 5 groups had significantly less VAD than MCL cutting, MCL cutting + RH fixation and MCL cutting +RH fracture group (P＜0.05) . As results of factorial design analysis of variance, there were statistically signifi- cant differences in VAD among the 8 specimen treatments (F_treat= 227.670, P＜0.01) , statistically significant differences in VAD among 5 de- grees of elbow flexions (F_flexion = 13.170, P＜0.01) , and significant interaction between specimen treatments and flexions of the elbow (Finter = 6.143, P＜0.01) . [Conclusion] MCL injury does lead to elbow valgus instability, which is considerably deteriorated by accompanied RH fracture. MCL repair alone is superior to RH fracture fixation alone to restore valgus stability.

Abstract:[Objective] To introduce the surgical techniques and preliminary clinical results of 3D printed osteotomy and total knee ar- throplasty (TKA) for complex lower limb deformities. [Methods] From November 2019 to November 2020, 3 patients received aforesaid pro- cedures for complex lower limb deformities. The CT data of lower limb were processed by computer to design extraarticular osteotomy guid- er and TKA osteotomy guider, and mimic the operations. Intraoperatively, the extraarticular osteotomy guider was placed on the center of ro- tation (COR) of the extraarticular deformity as planned to conduct the extraarticular osteotomy and correction with plate fixation. For the pa- tients with articular deformities, the 3D printed TKA guider was used for femoral or tibial end osteotomy, followed by the prosthetic installa- tion. [Results] All the patients were successfully operated on without any serious complications such as vascular and nerve injury. As time went during the follow-up period lasted for (20.00±6.93) months, KSS score and knee extension-flexion ROM significantly increased (P＜ 0.05) . Radiographically, the mechanical axis deviation (MAD) significantly improved postoperatively compared with those preoperatively (P＜ 0.05) . The hip-knee-ankle angle (HKA) improved postoperatively compared with those preoperatively, but there was no significant differ- ence between them (P＞0.05) . [Conclusion] The 3D printed one-stage osteotomy and TKA do correct deformities accurately and achieve good clinical outcomes for the knee end-stage arthropathy complicated with complex extraarticular and articular deformities.

Abstract:[Objective] To introduce the surgical technique and preliminary clinical results of percutaneous lumbar interbody fusion with novel self-developed instrument for lumbar spondylolisthesis. [Methods] From December 2017 to February 2019, 23 patients under- went abovementioned surgical intervention for lumbar spondylolisthesis. Under guide of fluoroscopy, the puncture aiming to the sliding in- tervertebral space was conducted from the entry point 6~9 cm beside the posterior midline, and then the needle was replaced by a guide wire. Foraminoplasty was performed following the guide wire, and the endoscope and instruments were inserted to complete decompression of the lateral recess and intervertebral foramen. The novel self-developed instruments were used to dilate the narrowed intervertebral space in grades. After that, percutaneous pedicle screws and rods were placed to assist reduction of spondylolisthesis. Discectomy with complete remove of endplate cartilage was done with self-developed reamers and curators through working cannel under endoscopic vision, and then bone autograft and a cage were inserted into the space. Finally, the screw-rod system was adjusted to compress the intervertebral space and fastened. [Results] All patients were successfully operated on without serious complications. At the last follow-up, the VAS scores both for back pain and leg pain, ODI score, as well as height of intervertebral space and distance of spondylolisthesis measured on radiographs were significantly improved compared with those before operation (P＜0.05) . CT scanning revealed bony fusion of the affected intervertebral space in all patients at the last interview. [Conclusion] This percutaneous lumbar fusion with the novel self-developed instruments is a safe, ef- fective and minimally invasive surgical method for lumbar spondylolisthesis.

Abstract:[Objective] To compare the early outcomes of primary total hip arthroplasty (THA) through SuperPATH approach versus pos- terolateral approach (PLA) . [Methods] From July 2018 to December 2020, a total of 88 patients underwent primary THA in our hospital. Of them, 45 patients were undergoing THA through SuperPATH approach, however, 2 cases were changed to PLA intraoperatively, finally 43 cases were enrolled in the SuperPATH group, while 43 patients had THA by using PLA approach. The perioperative, follow-up and im- aging data were compared between the two groups. [Results] The SuperPATH group was superior to the PLA group in terms of incision length, postoperative drainage, time to return walking and hospital stay (P＜0.05) , whereas the former was inferior to the latter in intraopera- tive blood loss and operation time (P＜0.05) . The SuperPATH group resumed full-weight bearing activity significantly earlier than the PLA group (P＜0.05) . The SuperPATH group were significantly better than the PLA group in terms of the VAS and Harris scores at 3 months after surgery (P＜0.05) , whereas which became not statistical significant between the two groups at the latest follow-up (P＞0.05) . Regarding to ra- diographic assessment, there was no a significant difference in acetabular inclination between the two groups at the latest follow-up (P＞0.05) , but the anteversion angle of the SuperPATH group was significantly higher than that of the PLA group (P＜0.05) . [Conclusion] The Super- PATH has the advantages of smaller incision, less trauma, less pain and faster postoperative functional recovery, whereas longer operation time compared with PLA approach.

Abstract:[Objective] To evaluate the clinical outcomes of bone cement filling bone defect of the first metatarsal secondary to tophus erosion. [Methods] A retrospective study was done on 32 patients who received bone cement filling combined with Kirschner wire place- ment for the bone defect of the first metatarsal secondary to tophus debridement in our hospital from January 2017 to December 2019. The metatarsophalangeal range of motion (ROM) , VAS score, hallux valgus angle measured on radiographs and blood uric acid were compared before and after operation. [Results] All patients were successfully operated on without complications, and were followed up for 12~18 months, with a mean of (15.92±2.41) months. At the last follow-up, the ROM, VAS and AOFAS scores significantly improved compared those preoperatively (P＜0.05) . As findings of X-ray films, the bone cement was in place firmly without separation and displacement, while with proper preservation of metatarsophalangeal space and unchanged hallux valgus angle (P＜0.05) . However, the blood uric acid had no significant change before and after operation (P＜0.05) . [Conclusion] Bone cement filling bone defect of the first metatarsal secondary to to- phi removed does preserve the metatarsophalangeal joint function to the maximum extent and improve the range of motion, which is an effec- tive treatment of the first metatarsophalangeal tophi in the early stage.

Abstract:[Objective] To explore the clinical outcomes and occupational protection of surgical treatment for thoracolumbar tuberculo- sis complicated with AIDS. [Methods] From November 2011 to May 2019, 21 patients underwent debridement and instrumented fusion through posterior approach for thoracolumbar tuberculosis complicated with AIDS in our department. Clinical results and documents regard- ing to occupational exposure and protection of the medical staff were analyzed. [Results] All patients were operated on successfully without serious complications. At the latest follow-up lasted for (16.97±4.42) months, both VAS score and ASIA neurological function scales signifi- cantly improved compared with those preoperatively (P＜0.05) . In term of radiographic assessment, all the patients got bone fusion, without lesion recurrence, internal fixation loosening or fracture by the time of the latest follow-up. Regarding occupational exposure, a total of 5 ex- posures occurred during operation, mainly in the process of surgical instrument transfer and surgical suture, involving needle puncture and eye spatter. All occupationally exposed medical workers were treated immediately without the infection detected 12 months later. [Conclusion] The surgical treatment is still effective approach to thoracolumbar tuberculosis complicated with AIDS, and occupational protection, especially for the hands and eyes, should be highly lightened during the operation.

Abstract:[Objective] To evaluated the clinical efficacy of triplane medial malleolus osteotomy and osteochondral autografting for os- teochondral lesions of the talus (OLT) . [Methods] From September 2015 to September 2017, a total of 23 patients received triplane medial malleolus osteotomy combined with debridement and repair with osteochondral graft harvest from the non-weight-bearing area of the talus for OLT. The clinical and imaging consequences were summarized. [Results] All the patients were successfully operated on without nerve or vascular injuries, whereas with operation time of (69.43±12.63) min. At the latest follow-up lasted for (37.13±7.33) months, the VAS score decreased significantly (P＜0.05) , whereas AOFAS score increased significantly compared with those preoperatively (P＜0.05) . In term of radiographic assessment, all patients got osteotomy union by the time of last follow-up, with OLT lesion repaired well, whereas with- out significant ankle degeneration. [Conclusion] This triplane medial malleolus osteotomy combined with osteochondral autografting har- vested from non-weight-bearing area of talus does achieve satisfactory clinical outcomes with low complication rate for OLT.

Abstract:[Objective] To investigate the feasibility of combined conservative treatments for old pubic symphysis separation. [Methods] A retrospective study was conducted on 30 patients who received combined conservative therapies, including three–dimensional con- tinuous traction, pelvic band fixation and exercise therapy, for old postpartum pubic symphysis separation in our department from February 2018 to August 2020. The clinical and imaging consequences were evaluated. [Results] There were no obvious adverse reactions during the combined conservative treatments. Compared with those before treatment, the VAS score and SF-36 score were significantly improved at 4 weeks and 6 months after treatment (P＜0.05) . At 6 months after treatment, 23 patients were marked obviously effectively, 6 cases effectively and 1 case ineffective, with total effective rate of 96.67%. Radiographically, compared with that before treatment the pubic symphysis separa- tion distance was significantly reduced at 4 weeks and 6 months after treatment (P＜0.05) . [Conclusion] This combined conservative therapy, involving continuous traction for three- dimensional reduction, pelvic band fixation and exercise therapy, has a satisfactory clinical out- comes for old postpartum pubic symphysis separation with an advantage of high safety.

Abstract:[Objective] To compare the clinical and imaging results of preoperative virtual reality simulation assisted arthroscopic ac- romioplasty (VRSAA) versus conventional arthroscopic acromioplasty (CAA) . [Methods] From March 2019 to March 2020, 67 patients with subacromial impingement were enrolled in this study, and were randomly divided into two groups. Of them, 33 patients were given the VR- SAA, while the other 34 received CAA. The clinical and imaging consequences were compared between the two groups. [Results] All pa- tients had operations finished successfully with no significant difference in the operative time between the two groups (P＜0.05) , however, the VRSAA group had significantly larger osteophyte in length resected than the CAA group (P＜0.05) . As time went in the follow-up period last- ed for (6.83±1.59) months on an average, the UCLA score and Constant-Murley score increased significantly in both groups (P＜0.05) , which in the VRSAA group were significantly better than CAA group at 1 and 3 months postoperatively (P＜0.05) . Regarding to imaging evaluation, the acromial slope angle (ASA) and acromial curvature height (ACH) significantly decreased (P＜0.05) , whereas the acromiohumeral intervals distance (AHD) significantly increased postoperatively in both groups compared with those preoperatively (P＜0.05) . The VRSAA had signifi- cantly lower ASA than that in the CAA group (P＜0.05) , despite of the fact that no significant differences were noticed in ACH and AHD be- tween the two groups postoperatively (P＜0.05) . [Conclusion] This preoperative virtual reality simulation assisted arthroscopic acromioplas- ty does help determine the intraoperative resection range, and is conducive to postoperative shoulder function recovery.