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1.
Donghai Li Xiaowei Xie Pengde Kang Bin Shen Fuxing Pei Changde Wang 《Journal of orthopaedic science》2017,22(6):1060-1065
Background
The purpose of this study was to evaluate the clinical results, survivorship and quick rehabilitation effects of modified surgery of percutaneously drilling and decompression through femoral head and neck fenestration combined with compacted autograft for early femoral head necrosis.Methods
We conducted a retrospective cohort study with 83 hips performed percutaneous decompression through femoral head and neck fenestration (Modified group) combined with autogenous bone grafting for early ONFH. For comparison, another 90 hips treated with conventional core decompression with bone grafting (Control group).Results
Median follow-up was 36 months (32–44 months). The length of incision, blood loss in operation, incision drainage, operation time and hospital stays in Modified group had better results than those in control group (P < 0.001). There were four cases in Modified group and five cases in control group had complications (P = 0.9). The VAS score and range of hip motion were better in Modified group during hospital stays summarily (P < 0.05). The average Harris score in modified group was higher than the control group at the first month (P = 0.005), while at other time of follow-up the two groups were with similar Harris scores (P > 0.05). There were 22 hips progressed to stage III in Modified group, while 23 hips progressed to stage III in control group (P = 0.89). The clinical success rate in Modified group were 86.7%, compared with that in control group (87.8%) ( P= 0.84).Conclusion
Percutaneous drilling and decompression through femoral head and neck fenestration combined with compacted autograft we reported showed an good surgical effect with a quick rehabilitation and had similar short-term effects compared with the conventional core decompression in treatment of early ONFH. 相似文献2.
3.
Jie-Feng Huang Xian-Jun Jiang Jian-Jian Shen Ying Zhong Pei-Jian Tong Xiao-Hong Fan 《Journal of orthopaedic science》2018,23(6):982-986
Background
The Unified Classification System (UCS) for Periprosthetic femoral fractures (PPFF) still has some limitations.Methods
We retrieved 18 previous classifications for PPFF based on systematic review of the literature, and also retrospectively analyzed 402 cases with PPFF. 46 cases (11.4%) were identified as beyond the classification scope of the original UCS.Results
We modified the UCS as follows: (1) add two new B2 subtypes: B2PALT/B2PAGT (i.e., the pseudo ALT/AGT: Fracture in trochanter region including a segment of the proximal medial/lateral femoral cortex); (2) add a new FS category to encompass stem fracture alone or accompanied by PPFF, with FSO designating this fracture with stem fracture alone, FS1 designating this fracture with the proximal portion of the fractured femoral prosthesis being stable, FS2 designating this fracture with the proximal portion of the fractured femoral prosthesis being loose and the surrounding bone quality being good, and FS3 designating this fracture with the proximal portion of the fractured femoral prosthesis being loose and the bone bed being of poor quality; and (3) delete Type F which does not apply to the femur. Thus, using our modification of the UCS, among the 46 cases, we found thirty-five B2PALT, two B2PAGT, three FSO, one FS1, two FS2 and three SF3.Conclusions
Compared to the original UCS, our modified version is more comprehensive. We believe it is useful to improve the judgment of the implant stability, and establish the therapeutic strategy for PPFF. 相似文献4.
Masatoshi Morimoto Yoshinori Takahashi Takahiro Kubo Kosuke Sugiura Yasuaki Tamaki Shunichi Toki Katsuyoshi Suganuma Kazumasa Inoue Keisuke Adachi Takashi Chikawa Koichi Sairyo Akihiro Nagamachi 《Journal of orthopaedic science》2017,22(4):722-725
Aims
The common treatment for an undisplaced femoral neck fracture is osteosynthesis. Two major complications of osteosynthesis are non-union and late collapse of the femoral head. We speculated that femoral head perfusion is one of the most important factors that affect the outcome of osteosynthesis after femoral neck fracture. We have preoperatively estimated femoral head perfusion by dynamic MRI positive enhancement integral color mapping (PEICM). The purpose of this study was to evaluate the outcomes of undisplaced femoral neck fractures based on PEICM.Patients and methods
Sixty-eight patients participated in this prospective study. All patients underwent PEICM in a 1.5-Tesla MRI machine using coronal fast spoiled gradient echo imaging sequences with gadopentetate dimeglumine as the contrast agent. Femoral head perfusion was displayed via color mapping using PEICM. Three types were distinguished. For type A, the color was identical to unaffected side indicated normal perfusion. For type B, the color was darker than unaffected side indicated decreased perfusion. For type C, the color was black indicated complete absence of perfusion. All patients underwent osteosynthesis with three cannulated screws. The rates of non-union and late collapse for each type were calculated.Results
Sixteen patients were classified as Type A, 43 as Type B, and 6 as Type C. The non-union rates were 0% for Type A, 6.7% for Type B, and 50.0% for Type C. The late collapse rates were 0% for Type A, 4.4% for Type B, and 0% for Type C.Conclusion
PEICM precisely detected femoral head perfusion. Primary prosthetic replacement should be considered for older patients with Type C to minimize the chances of revision surgery, even in undisplaced femoral neck fractures. 相似文献5.
Background
Management of a displaced comminuted patellar fractures is challenging, and various surgical fixation methods have been suggested. However, issues of loss of reduction and breakage of fixatives have not yet been resolved. In the current study, we describe a new technique for exposure and stabilization of comminuted patellar fractures and evaluate the clinical and radiologic outcomes of this new treatment.Materials and methods
Thirteen patellar fractures with articular comminution, which were treated by headless compression screws with additional separate vertical wiring were enrolled in this study. Loose articular fragments were fixed with headless compression screws under direct visual reduction of the articular surface, which was facilitated by the superior everting of the patella. Radiographs of the knee were obtained at routine follow-up to assess fracture healing and widening of articular step-off. Clinical outcomes including range of motion, quadriceps circumference, visual analog scale (VAS) related pain score, Lysholm, and Bostman grading scales were measured at the last follow-up.Results
All the fractures healed at a mean of 15 weeks. No patient had loss of reduction, evidence of implant migration, or metallic failure. Articular step-off larger than 2 mm was not seen in any of the cases. The average range of motion arc was 134.2° (range, 120°–145°), and the mean Lysholm and Bostman scores were 94.4 (range, 84–100 points) and 28.7 (range, 25–30 points), respectively. Thigh muscle wasting was observed in four patients (33.3%), but no patient had >1.5 cm difference in thigh circumference girth between the injured and uninjured lower limbs. The average VAS-related pain score was 0.4.Conclusions
Articular fixations with headless compression screws under direct visual reduction of the articular surface resulted in good clinical outcomes and were considered clinically effective for comminuted patellar fractures. 相似文献6.
7.
Xinjie Wu Xiangsheng Tang Mingsheng Tan Ping Yi Feng Yang 《Journal of orthopaedic science》2018,23(1):39-44
Background
Although several studies reported that Balloon kyphoplasty (BK) or percutaneous vertebroplasty (PVP) could improve pulmonary functions, there is no study to compare the efficacy and safety of 2 procedures in COPD patients with osteoporotic vertebral compression fractures (OVCFs) and investigate the reason why they could improve pulmonary functions.Method
Two procedures, including BK and PVP were performed in 61 COPD patients with single-level OVCFS. VAS-score, ODI, pulmonary function and radiological parameters (Anterior vertebral body height ratio, posterior vertebral body height ratio and Local kyphotic angle) were evaluated preoperatively and 1 week, 3 months and 12 moths postoperatively, respectively. The operation time and cement leakage rate were also recorded.Result
The operation time was longer in BK than PVP (37.5 ± 7.4 versus 27.6 ± 6.2 min per vertebra). Both groups got an equally significant improvement in pain relief, functional result, pulmonary functions and demonstrated similar cement leakage rate (BK: 6.5%; PVP: 10%). Radiologically, BK is favored than PVP. A significant relationship between VAS and pulmonary functions except FEV1 was observed in first week postoperatively, while the ODI was related to MVV in first 3 months postoperatively.Conclusion
Both BK and PVP provided equally significant back pain relief and improvements of respiratory functions in patients affected by COPD with single level OVCFs. BK was favored in radiography, this improvement was not related to pain relief and improvement of pulmonary functions. Given much higher cost of BK, similar effectiveness and safety of BK and PVP, in COPD patients with OVCFs, PVP may be a better choice. 相似文献8.
Norio Imai Ryota Takubo Hayato Suzuki Hayato Shimada Dai Miyasaka Kazuki Tsuchiya Naoto Endo 《Journal of orthopaedic science》2019,24(3):482-487
BackgroundIn obese patients, malpositioning of the acetabular cup increases the risk of dislocation in total hip arthroplasty (THA). The aim of this study was to determine whether obesity affects the accuracy of acetabular cup positioning using a computed tomography (CT)-based navigation system.MethodsWe retrospectively evaluated 226 consecutive patients who underwent cementless primary THAs assisted by the CT-based hip navigation system. We divided the patients into three groups according to body mass index (BMI) and examined the difference between preoperative planning and postoperative implantation angles from CT data.ResultsThere was no significant correlation between BMI and both inclination and anteversion differences (R = 0.028 and R = 0.045, respectively). There were no significant differences among the BMI < 25, 25 ≦ BMI < 30, and BMI ≧ 30 groups (p value: 0.725, 0.934, respectively); between the BMI < 25 and BMI ≧ 25 groups (p value: 0.542, 0.697, respectively); and between the BMI < 30 and BMI ≧ 30 groups with regard to inclination and anteversion (p value: 0.859, 0.456, respectively). Moreover, similar findings were observed with regard to the distance between the preoperative planning and postoperative cup positioning for the transverse, anteroposterior, and craniocaudal axes of the pelvis.ConclusionWe found that the accuracy of acetabular cup placement using CT based-navigation in THA was not affected in obese patients. Therefore, THAs with a CT-based navigation system are considered useful in obese patients. 相似文献
9.
Tao Jiang Hong Yin Xian-Jun Ren Tong-Wei Chu Wei-Dong Wang Chang-Qing Li 《Journal of orthopaedic science》2017,22(5):816-821
Background
Tear drop fracture of axis represents a very small percentage of injuries of the cervical spine, but there is controversy about the treatment method for tear drop fracture of axis, especially when a large avulsed fragment is significant displacement, which combined with the inferior endplate serious traversed lesion of axis.Objective
To evaluate the clinical outcome of anterior reduction, graft fusion of C2-3 and plate fixation in the management of massive tear drop fracture of axis combining with inferior endplate serious traversed lesion of axis.Methods
There were 7 patients with a massive tear drop fracture of axis combining with inferior endplate serious traversed lesion. The avulsed ratio of inferior endplate of axis was 46.8 ± 13.4%, the average angle of rotation of the avulsed fragment was 30.4 ± 11.7, and the average displacement was 7.7 ± 2.8 mm. The posterior displacement of axis body was observed with three patients. All patients underwent anterior reduction, graft fusion of C2-3 and plate fixation with high anterior cervical retropharyngeal approach. The follow-up ranges from 2 years to 5 years.Results
In all cases, tear drop fracture was reduced completely, avulsed fragment got bony healing, and bone graft achieved bony fusion at C2-3. There were no local angle deformity and rotated deformity in all patients, and there were normal physiological lordosis and good stabilization of upper cervical spine. The neurological function of one patient with American Spine Injury Association (ASIA) impairment scale type D was improved to type E postoperatively. Six patients without neurological lesion had no neurological syndrome after operation.Conclusions
Anterior surgical procedures would be an effective treatment of massive tear drop fracture of axis combining with inferior endplate serious traversed lesion. Complete reduction, sufficient stabilization and normal physiological lordosis of upper cervical spine could be achieved postoperatively. 相似文献10.
Dongmin Xu Hiroshi Koyama Hiroki Furuhashi Shoichi Nishikino Hironobu Hoshino Yukihiro Matsuyama 《Journal of orthopaedic science》2017,22(6):1102-1106
Background
In total hip arthroplasty (THA) surgery, hip muscle preservation is important in strengthening the stability of the hip and improving the activities of the patient. However, whether the type of femoral stem affects the recovery of the hip muscles remains unknown. The aim of this study was to compare the postoperative hip muscle recovery among femoral stem varieties after THA.Methods
The computed tomography (CT) images of 44 patients (44 hips) who underwent THA using an anterolateral approach were reviewed. Twenty-two patients received a fit-and-fill (FF) stem and 22 received the tapered-wedge (TW) stem. The volumes of the gluteus maximus (GMA), gluteus medius (GME), and obturator internus (OI) were measured on three-dimensional models reconstructed using preoperative and 6-month postoperative CT images. Relationships between muscle volume changes and factors including the femoral stem length were evaluated.Results
The GMA and GME volumes increased postoperatively by 8.2% and 8.3%, respectively, in the FF stem group and 7% and 6%, respectively, in the TW stem group, with no group differences. In contrast, the OI volume decreased postoperatively by 17.8% in the FF group and was preserved in TW group (p < 0.001). Moreover, OI volume was decreased in 19 patients (86%) in the FF group and in 11 patients (50%) in the TW group (p = 0.01). The normalized stem length was significantly associated with the postoperative change in OI volume (r = ?0.45, p = 0.002).Conclusions
The TW stem showed a significant advantage over the FF stem in terms of OI preservation. Surgeons should pay close attention during surgery to avoid OI injury when using different femoral stem types. We suggest that a short and reduced lateral shoulder femoral stem is a better choice for the preservation of external rotation muscles. 相似文献11.
Eiji Nakata Shinsuke Sugihara Natsumi Yamashita Shozo Osumi 《Journal of orthopaedic science》2017,22(5):946-950
Background
Atypical femoral fractures (AFFs) have been reported to occur in patients with bone metastases who received long-term bisphosphonate treatment. However, the incidence of AFFs in breast cancer patients with bone metastases who received intravenous bisphosphonate is unclear. The purpose of this study is to examine the incidence of AFFs in breast cancer patients with bone metastases who received intravenous bisphosphonate. In addition, we estimated the number of dose and duration of intravenous bisphosphonate at the time of occurrence of AFFs.Methods
We identified 356 female breast cancer patients with bone metastases who received intravenous bisphosphonate between November 2004 and October 2013 in our institution. The median number of doses of intravenous bisphosphonate was 18 (range, 1–103). The median duration of intravenous bisphosphonate treatment was 16 months (range, 1–102 months).We estimated the incidence of AFFs in patients who received intravenous bisphosphonate and used Poisson regression model to obtain the incidence rates of AFFs.Results
Three AFFs in two patients were identified and the estimated incidence of AFFs was 2.99 per 1000 person-years. At the time of occurrence of AFFs, the patients had received 41 and 83 doses of intravenous bisphosphonate, for 37 and 79 months, respectively. The patients underwent open reduction and internal fixation with intramedullary nail. The frequency and incidence of AFFs in patients who received intravenous bisphosphonate for at least 41 or 83 doses or for more than 37 or 79 months were 2/60 (3.3%), 1/7 (14.3%), 2/70 (2.9%), and 1/9 (11.1%), respectively.Conclusions
The incidence of AFFs is low in breast cancer patients with bone metastases who received intravenous bisphosphonate. Careful observation is warranted and radiography should be performed to investigate AFFs when clinical signs such as thigh pain appear.Study design
Clinical study. 相似文献12.
Tomoko Tetsunaga Tomonori Tetsunaga Keiichiro Nishida Masato Tanaka Yoshihisa Sugimoto Tomoyuki Takigawa Toshifumi Ozaki 《Journal of orthopaedic science》2017,22(3):554-559
Background
Although a multidisciplinary approach is often recommended to treat intractable pain, this approach does not completely prevent uncontrolled pain in some patients. The aim of this retrospective study was to investigate the exacerbating factors of prolonged, intractable pain among patients being treated at a pain liaison clinic.Methods
The participants of this study were 94 outpatients (32 men, 62 women) with chronic intractable pain who visited our hospital between April 2013 and February 2015. Demographic and clinical information was obtained from all patients at baseline. Experts in various fields, including anesthesia, orthopedic surgery, psychiatry, physical therapy, and nursing, were involved in the treatment procedures. All patients were assessed before and after a 6-month treatment period using the following measures: the Numeric Rating Scale (NRS); the Pain Catastrophizing Scale (PCS); the Hospital Anxiety and Depression Scale (HADS); the Pain Disability Assessment Scale (PDAS); and the Oswestry Disability Index (ODI). All participants were then divided into two groups based on their self-reported pain after treatment: a pain relief group (n = 70) and a prolonged pain group (n = 24). The exacerbating factors of prolonged pain after treatment in the pain liaison outpatient clinic were analyzed using univariate and multiple logistic regression analysis.Results
A significant improvement in NRS scores was observed after the 6-month follow-up period. After treatment, 24 (25.5%) of the 94 patients reported having prolonged pain. Significant improvements were seen in the PCS, PDAS, and ODI scores in the pain relief group, and in the HADS depression scores in the prolonged pain group. On univariate and multiple regression analysis, HADS depression scores were identified as a factor related to prolonged pain after treatment.Conclusions
The results of the present study suggest that severe depression at the initial visit to the liaison outpatient clinic was an exacerbating factor for prolonged pain after treatment. 相似文献13.
Xiao Yu Difeng Zhang Xianjun Chen Ji Yang Lin Shi Qingjiang Pang 《Journal of orthopaedic science》2018,23(2):356-364
Background
Non-traumatic osteonecrosis of the femoral head (ONFH) is a refractory osteonecrosis disease caused by an abnormal blood supply to bone tissue. However, therapeutic hip preservation strategies are diverse, and the therapeutic outcomes are not ideal.Objective
A network meta-analysis was performed to assess the effect of hip preservation treatments on non-traumatic ONFH.Methods
We searched public electronic databases through May 15, 2017 using the following keywords: “femoral head necrosis osteonecrosis”; “femoral head osteonecrosis”; “osteonecrosis of femoral head”; “avascular necrosis of femoral head”; “necrosis of femoral”; and “random*”. The primary outcome in the present analysis was the treatment failure rate. Secondary outcomes included the Harris hip and the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scores.Results
We included 21 articles assessing a total of 1415 hips in our analysis. In the network meta-analysis, the treatments were ranked by the surface under the cumulative ranking curve (SUCRA). Core decompression (CD) plus cytotherapy was most likely to reduce the treatment failure rate (SUCRA score = 18.9%), followed by alendronate treatment (SUCRA score = 17.8%), cocktail treatments (SUCRA score = 15.6%), extracorporeal shock wave therapy (ESWT) plus alendronate (SUCRA score = 15.4%), and avascular biomaterials plus cytotherapy (SUCRA score = 13.8%) in a frequentist framework; similar results were obtained in a Bayesian framework. For the secondary outcomes, ESWT was most likely to improve the Harris hip score (SUCRA score = 33.7%), followed by ESWT plus alendronate (SUCRA score = 33.1%) and cocktail (SUCRA score = 19.6%) treatments in a frequentist framework. A traditional analysis showed that the effect of CD plus cytotherapy was significantly better than the effect of CD alone in improving the WOMAC score (SMD, ?6.01; 95% CI, ?7.81 to ?4.22; p < 0.001).Conclusion
CD plus cytotherapy is a relatively superior treatment for reducing treatment failure rates in early and intermediate ONFH patients, and ESWT is the most effective treatment for improving Harris hip scores. 相似文献14.
Ji Wan Kim Jin-Sook Ryu Sora Baek Seong-Eun Byun Jae Suk Chang 《Journal of orthopaedic science》2017,22(3):457-462
Background
Bone SPECT can be used after a femur neck fracture to assess the circulation of the femoral head in the immediate postoperative period because the blood supply is one of the major factors affecting bone uptake of radiotracer on bone scintigraphy. The purpose of our present study was to investigate whether osteonecrosis of the femoral head (OFH) after internal fixation of femoral neck fracture could be predicted by early and late bone SPECT.Methods
This retrospective cohort study enrolled 44 patients (33 women; mean age, 66.9 years) who underwent surgical fixation for femoral neck fractures. Early and late bone SPECT images were obtained within 2 weeks postoperatively and at 3 months postoperatively. Patients were followed up for a minimum of 24 months (average, 34 months).Results
OFH developed in 9 out of 44 patients but no patient showed nonunion. Seventeen patients with normal femoral head uptake on early bone SPECT were healed. Of 27 patients with decreased femoral head uptake on early bone SPECT, 2 patients developed OFH on radiography before 3 months postoperatively, 18 patients recovered to normal uptake on the late SPECT, and the remaining 7 patients still showed decreased uptake on the late SPECT at 3 months postoperatively. All of these 7 cases finally developed OFH on radiography.Conclusion
Bone SPECT can reliably predict the possibility of OFH with after femoral neck fracture at least 3 months after surgery, while early bone SPECT showed low specificity.Study design
Clinical. 相似文献15.
Shunichiro Kambara Hiroshi Nakayama Motoi Yamaguchi Akio Matsumoto Ken Sasaki Kaori Kashiwa Tomoya Iseki Shinichi Yoshiya 《Journal of orthopaedic science》2017,22(3):481-487
Purpose
To comparatively analyze the geometry of the posterolateral femoral (PL) tunnel in double-bundle ACL reconstruction between far anteromedial transportal (TP) and outside-in (OI) drilling techniques based on three-dimensional computed tomography (3DCT) image analysis.Methods
Forty patients who underwent anatomic double-bundle hamstring ACL reconstruction using the TP (n: 20) or OI (n: 20) method with postoperative CT data available were included in the study. The analyzed parameters were as follows: location of the intraarticular tunnel aperture, tunnel length, bending angle (angulation of the graft at the intraarticular tunnel aperture), and long axis of the tunnel aperture/drill diameter ratio as a parameter of ellipsoidal geometry.Results
Anatomical tunnel placement was achieved in both groups. Coalition of the AM and PL tunnel apertures was found in 3 knees in the TP group and 1 knee in the OI group, though no significant difference in the rate of this problem was demonstrated between the groups (P: 0.30). The tunnel length was not significantly different between the groups, while the graft bending angle at the tunnel aperture was significantly larger in the OI group than the TP group (99.4° vs. 63.6°). The long axis/drill diameter ratio averaged 1.23 in the TP group and 1.13 in the OI group with significant intergroup difference.Conclusion
When drilling the PL femoral tunnel in double-bundle ACL reconstruction, anatomic placement of the intraarticular tunnel aperture was feasible in both the TP and OI techniques. The tunnel aperture was rounder and the graft bending angle in knee extended position at the intraarticular aperture was more acute in the OI technique than the TP technique.Level of evidence
Level IV (retrospective comparison of the two patient groups treated at different hospitals). 相似文献16.
17.
Atsunori Murase Masahiro Nozaki Masaaki Kobayashi Hideyuki Goto Masahito Yoshida Sanshiro Yasuma Tetsuya Takenaga Yuko Nagaya Jun Mizutani Hideki Okamoto Hirotaka Iguchi Takanobu Otsuka 《Journal of orthopaedic science》2017,22(5):874-879
Background
Recently several authors have reported on the quantitative evaluation of the pivot-shift test using cutaneous fixation of inertial sensors. Before utilizing this sensor for clinical studies, it is necessary to evaluate the accuracy of cutaneous sensor in assessing rotational knee instability. To evaluate the accuracy of inertial sensors, we compared cutaneous and transosseous sensors in the quantitative assessment of rotational knee instability in a cadaveric setting, in order to demonstrate their clinical applicability.Methods
Eight freshly frozen human cadaveric knees were used in this study. Inertial sensors were fixed on the tibial tuberosity and directly fixed to the distal tibia bone. A single examiner performed the pivot shift test from flexion to extension on the intact knees and ACL deficient knees. The peak overall magnitude of acceleration and the maximum rotational angular velocity in the tibial superoinferior axis was repeatedly measured with the inertial sensor during the pivot shift test. Correlations between cutaneous and transosseous inertial sensors were evaluated, as well as statistical analysis for differences between ACL intact and ACL deficient knees.Results
Acceleration and angular velocity measured with the cutaneous sensor demonstrated a strong positive correlation with the transosseous sensor (r = 0.86 and r = 0.83). Comparison between cutaneous and transosseous sensor indicated significant difference for the peak overall magnitude of acceleration (cutaneous: 10.3 ± 5.2 m/s2, transosseous: 14.3 ± 7.6 m/s2, P < 0.01) and for the maximum internal rotation angular velocity (cutaneous: 189.5 ± 99.6 deg/s, transosseous: 225.1 ± 103.3 deg/s, P < 0.05), but no significant difference for the maximum external rotation angular velocity (cutaneous: 176.1 ± 87.3 deg/s, transosseous: 195.9 ± 106.2 deg/s, N.S).Conclusions
There is a positive correlation between cutaneous and transosseous inertial sensors. Therefore, this study indicated that the cutaneous inertial sensors could be used clinically for quantifying rotational knee instability, irrespective of the location of utilization. 相似文献18.
19.
Hiroshi Hagino Naoto Endo Tetsuji Yamamoto Atsushi Harada Jun Iwamoto Naoki Kondo Tasuku Mashiba Satoshi Mori Junichi Nakamura Seiji Ohtori Akinori Sakai Junichi Takada Yoshiharu Kato 《Journal of orthopaedic science》2018,23(2):316-320