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Savarese E, Aicale R, Romeo R, Maffulli N. Shoulder balloon spacer for massive irreparable rotator cuff tears results in significant improvements. Knee Surg Sports Traumatol Arthrosc 2025; 33:1815-1825. [PMID: 39189116 DOI: 10.1002/ksa.12445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 06/25/2024] [Accepted: 08/07/2024] [Indexed: 08/28/2024]
Abstract
PURPOSE The aim of the present study was to assess the effectiveness of balloon implantation in patients with irreparable supraspinatus tears alone or in combination with other rotator cuff (RC) tendon tears and the effect of several covariables, such as age, gender, status of the long head biceps, with or without tendon repair and regardless the number of tendon involved. METHODS Patients enrolled from 'San Carlo' Hospital of Potenza (Italy, IT), from January 2012 to September 2014, underwent arthroscopic implantation of shoulder balloon by a single surgeon, and followed for 3 years. The American Shoulder and Elbow Surgeons (ASES) and Constant score (CS) were administered pre-, post-operatively at 12 months, and then annually. Patients were classified on the basis of the number of tendons involved in the tears and treatment performed, considering the reparability of the tendons themselves. Gleno-humeral joint osteoarthrosis (OA) was evaluated through shoulder radiographs and classified according to the Samilson-Prieto classification, at the first examination and at the final follow-up. Statistical improvements were evaluated using a variance model (least-squares means) and a T distribution test for the evaluation between different treatment groups. RESULTS A total of 61 procedures were performed, and eight patients were lost during follow-up. The mean baseline CS was 30.2 ± 15.4 with statistically significant improvement, respectively, at 1-, 2- and 3-year follow-up to 69.3 ± 4.2, 74.6 ± 3.6 and 69.7 ± 5.1 respectively. ASES score at baseline was 22.5 ± 10.9, with a statistically significant improvement to 69.7 ± 9.2, 68 ± 17.8 and 71.2 ± 16.6 at 1-, 2- and 3-year follow-up, respectively. Tenotomy or absence of long head biceps at presentation did not influence results (n.s.), with no difference according to gender and age. At final follow-up, 24 patients (43.9%) showed progression of glenohumeral OA. One patient required secondary surgery for shoulder replacement after 18 months for persistent pain and one patient required implant removal following post-operative laser treatment. CONCLUSION Arthroscopic rotator cuff tears repair with subacromial spacer balloon implantation showed statistically significant clinical and functional improvement at 3-year follow-up. Patients treated with combined partial repair and subacromial spacer balloon implantation experienced good results independent of gender, age, type of tear and long-head biceps tendon status. The risks related to this procedure appear to be minimal. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Eugenio Savarese
- Department of Orthopaedic and Trauma Surgery, Casa di Cura di Bernardini, Taranto, Italy
| | - Rocco Aicale
- Department of Orthopaedic and Trauma Surgery, Casa di Cura di Bernardini, Taranto, Italy
| | - Rocco Romeo
- Department of Orthopaedic and Trauma Surgery, Ospedale San Carlo, Via Potito Petrone, Potenza, Italy
| | - Nicola Maffulli
- Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Mile End Hospital, Queen Mary University of London, London, England
- School of Medicine, Institute of Science and Technology in Medicine, Guy Hilton Research Centre, Keele University, Stoke-on-Trent, England
- Department of Trauma and Orthopaedic Surgery, Faculty of Medicine and Psychology, University La Sapienza, Roma, Italy
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Kang H, Yoo SJ, Yang J, Lee KR, Choi S. Comparable clinical outcome with greater thickness and lesser re-tear rate following allogenous dermal scaffold augmentation for large to massive rotator cuff tears: a retrospective case-controlled study. J Orthop Surg Res 2025; 20:304. [PMID: 40119456 PMCID: PMC11929308 DOI: 10.1186/s13018-025-05696-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2024] [Accepted: 03/07/2025] [Indexed: 03/24/2025] Open
Abstract
BACKGROUND Allogenous dermal scaffold augmentation enhances partial rotator cuff repairs by providing structural support and a biologic scaffold that promotes tissue regeneration, reduces mechanical strain, and compensates for poor tendon quality in large to massive rotator cuff tears. This approach helps lower the risk of retear and improves functional recovery. METHODS This study included 55 patients with large to massive rotator cuff tears, divided into two groups. Group A (28 patients) underwent arthroscopic partial repair, while Group B (27 patients) received allogenous dermal scaffold graft augmentation following partial repair to reinforce the repair and resurface the uncovered tendon footprint. Clinical assessments, including the University of California-Los Angeles score, Constant-Murley score, and visual analogue scale, were conducted preoperatively, at 3, 6, and 12 months postoperatively, and annually thereafter. Radiologic evaluations, including magnetic resonance imaging and ultrasonography, were performed preoperatively and postoperatively to assess tendon integrity. RESULTS The mean follow-up period was 40 months for Group A and 36 months for Group B. Clinical functional scores significantly improved in both groups at the final follow-up. Postoperative radiologic assessment showed 9 retears in Group A and 4 in Group B (p < 0.05), respectively, with significantly greater postoperative tendon thickness in Group B compared to Group A (p-value < 0.05). Additionally, acromiohumeral distance improved significantly in both groups, from 7 mm to 9 mm in Group A and from 7 mm to 11 mm in Group B, with Group B demonstrating superior improvement (p < 0.01). CONCLUSION This study suggests that allogenous dermal scaffold graft augmentation, in addition to partial repair, enhances tendon thickness and acromiohumeral distance. Furthermore, it results in lower retear rates compared to partial repair alone.
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Affiliation(s)
- Hyunseong Kang
- Department of Orthopaedic Surgery, Jeju National University Hospital, Jeju National University School of Medicine, Jeju, Republic of Korea
| | - Seung Jin Yoo
- Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Joseph Yang
- Department of Orthopaedic Surgery, Jeju National University Hospital, Jeju National University School of Medicine, Jeju, Republic of Korea
| | - Kyung Ryeol Lee
- Department of Radiology, Jeju National University Hospital, Jeju National University School of Medicine, Jeju, Republic of Korea
| | - Sungwook Choi
- Department of Orthopaedic Surgery, Jeju National University Hospital, Jeju National University School of Medicine, Jeju, Republic of Korea.
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Khanfar A, Alswerki MN, Alelaumi AF, Al-Tamimi S, Saimeh TH, Keilani LZ, Keilani DZ, Altarawneh TA, Barakat M, Alelaumi OF, Almomani A, Hammad R, Theeb L, Al Qaroot B. A combined anterior and posterior cuff transfer: a novel technique for massive irreparable rotator cuff tears. Musculoskelet Surg 2025:10.1007/s12306-025-00882-0. [PMID: 39891872 DOI: 10.1007/s12306-025-00882-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2024] [Accepted: 01/14/2025] [Indexed: 02/03/2025]
Abstract
INTRODUCTION Irreparable rotator cuff tears (IRCTs) are large tears that can't be surgically repaired due to poor tissue quality, degeneration, or severe tendon retraction. These tears often involve multiple tendons and lead to fatty infiltration, humeral head migration, and tendon retraction. Patients with IRCTs typically present with pseudoparalysis, muscle atrophy, or anterosuperior escape. While various surgical options exist, outcomes are often inconsistent. This case series presents a novel technique for managing massive IRCTs, showing excellent, consistent results and offering a promising advancement for treating these challenging cases. METHODOLOGY Our case series involved 20 patients with massive irreparable rotator cuff tears, presenting clinically with pseudoparalysis and radiographically with signs of fatty infiltration, anterosuperior escape, and tendon retraction. The outcomes of interest included the Western Ontario Rotator Cuff Index (WORI), Oxford Shoulder Score (OSS), and range of motion arc (forward flexion and abduction), measured both preoperatively and postoperatively. RESULTS The mean age of our patient cohort was 53.6 years, with a mean follow-up time of 40 months. The mean preoperative WORI score was 155.3, which improved to 54.2 postoperatively, showing an improvement of 101 points from the baseline. The mean preoperative OSS was 34.4, improving to 10.5 postoperatively, with a gain of 23.8 points. The mean preoperative range of motion for forward flexion was 67.0°, which improved to 164° postoperatively, resulting in a mean gain of 97°. The mean preoperative abduction was 57°, which improved to 166° postoperatively, with a mean gain of 109°. All these findings were statistically significant (p < 0.05). CONCLUSION In our surgical technique, all patients demonstrated clinically and statistically significant improvements in both range of motion and patient-reported outcomes. This makes our approach a novel, robust, and reliable technique for managing massive irreparable tears, particularly in young adult patients. LEVEL OF EVIDENCE Case Series, Level IV.
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Affiliation(s)
- A Khanfar
- Upper Limb and Orthopedic Surgery Consultant, Jordan University Hospital, Associate Professor, University of Jordan, Amman, Jordan
| | - M N Alswerki
- Department of Orthopedic Surgery, Jordan University Hospital, P.O. Box: 13046, Amman, Jordan.
| | - A F Alelaumi
- Department of Orthopedic Surgery, Jordan University Hospital, P.O. Box: 13046, Amman, Jordan
| | | | - T H Saimeh
- Jordan University Hospital, Amman, Jordan
| | | | | | | | - M Barakat
- Jordan University Hospital, Amman, Jordan
| | - O F Alelaumi
- Jordan University Science and Technology, Irbid, Jordan
| | - A Almomani
- Jordan University Hospital, Amman, Jordan
| | - R Hammad
- Jordan University Hospital, Amman, Jordan
| | - L Theeb
- Faculty of Medicine, University of Jordan, Amman, Jordan
| | - B Al Qaroot
- Faculty of Rehabilitation Science, University of Jordan, Amman, Jordan
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Tashiro E, Kozono N, Higaki H, Shimoto T, Nakashima Y. In vivo shoulder kinematic changes and rotator cuff healing after surgical repair of large-to-massive rotator cuff tears. J Orthop Surg Res 2024; 19:801. [PMID: 39604958 PMCID: PMC11603637 DOI: 10.1186/s13018-024-05292-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2024] [Accepted: 11/18/2024] [Indexed: 11/29/2024] Open
Abstract
BACKGROUND Few studies have investigated the correlation between shoulder kinematics and clinical outcomes in patients undergoing rotator cuff repair using dynamic analysis. This study assessed shoulder kinematics before and after surgical repair in patients with rotator cuff tears (RCTs) and determined the relationship among shoulder kinematics and between shoulder kinematics and clinical outcomes. METHODS Ten patients with large-to-massive RCTs and 10 control participants were included. In vivo shoulder kinematics during scapular plane abduction were measured preoperatively and 1 year postoperatively using validated image-registration techniques and compared among the control, preoperative, and postoperative groups. Mixed models were used to compare the effects of the groups on shoulder kinematics, followed by Tukey's honest significant difference test. Pearson's correlation coefficient was used to identify the correlations among shoulder kinematics and between each kinematic and clinical outcome. RESULTS The scapula, tilted more anteriorly preoperatively, was not different from the control group postoperatively. Additionally, the change in scapular posterior tilt (PT) throughout dynamic abduction was 18.17° ± 3.59° in the postoperative group, greater than that in the control group (11.54° ± 2.29°; p = 0.0037). The postoperative change in PT significantly correlated with acromiohumeral distance (AHD) and rotator cuff integrity (Sugaya classification) (AHD: r = 0.71, p = 0.023; Sugaya classification: r = - 0.75, p = 0.013), but not preoperative change in PT. Functional score improved from preoperative to postoperative (p < 0.0001). Abduction angle and functional score significantly correlated with Sugaya classification (abduction angle: r = - 0.67, p = 0.034; functional score: r = - 0.70, p = 0.025) but not with shoulder kinematics. Mean superior translation of the humeral head and AHD throughout abduction changed from 1.77 ± 1.34 to 0.61 ± 1.37 and 1.44 ± 1.59 to 2.71 ± 2.27 mm, respectively, from preoperative to postoperative (both p < 0.0001). CONCLUSIONS After the surgical repair of large-to-massive RCTs, glenohumeral stability normalized, and the more anteriorly tilted orientation of the scapula improved. Additionally, the preoperative increased scapular motion throughout dynamic abduction was further enhanced postoperatively. Interestingly, in postoperative patients, scapular motion toward PT during dynamic abduction correlated with minimum AHD and cuff healing.
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Affiliation(s)
- Eiji Tashiro
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka City, Fukuoka, 812-8582, Japan
| | - Naoya Kozono
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka City, Fukuoka, 812-8582, Japan.
| | - Hidehiko Higaki
- Department of Biorobotics, Faculty of Engineering, Kyushu Sangyo University, 2-3-1 Matsukadai, Higashi-Ku, Fukuoka City, Fukuoka, 813-8503, Japan
| | - Takeshi Shimoto
- Department of Information and System Engineering, Faculty of Information Engineering, Fukuoka Institute of Technology, 3-30-1 Wajiro-Higashi, Higashi-Ku, Fukuoka City, Fukuoka, 811-0295, Japan
| | - Yasuharu Nakashima
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka City, Fukuoka, 812-8582, Japan
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Milano G, Colosio A, Minotta Quebradas MJ, Pratobevera A, Daffara V, Saccomanno MF. Biologic augmentation of rotator cuff repair with microfragmented autologous subacromial bursal tissue enveloped in a patch of compressed autologous long head of biceps tendon tissue: the Bio-Ravioli technique. JSES Int 2024; 8:1010-1015. [PMID: 39280168 PMCID: PMC11401564 DOI: 10.1016/j.jseint.2024.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/18/2024] Open
Abstract
Background Rotator cuff repair is one of the most frequently performed procedures in orthopedic surgery. However, considering the limited healing potential of rotator cuff tendons, several augmentation strategies have evolved to enhance tendon healing. The purpose of this article was to present a new surgical technique called Bio-Ravioli. Methods Patients with repairable full-thickness posterosuperior rotator cuff tear and a moderate-to-high risk of healing failure were chosen as candidates for the Bio-Ravioli procedure. It is a biologic augmentation strategy to increase healing potential of arthroscopic rotator cuff repair by use of a biologic graft fixed at the bone-tendon interface. The Bio-Ravioli consists of microfragmented autologous subacromial bursal tissue enveloped in a patch of compressed autologous long head of biceps tendon tissue. The rotator cuff is then repaired to the bone and over the graft using a transosseus equivalent configuration. Conclusion The Bio-Ravioli technique represents an easy and reliable way to increase the healing potential at the bone-tendon interface by using autologous mesenchymal stem cells from different sources: subacromial bursa and long head of the biceps tendon.
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Affiliation(s)
- Giuseppe Milano
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy
- Department of Bone and Joint Surgery, Spedali Civili, Brescia, Italy
| | - Alessandro Colosio
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy
| | | | - Andrea Pratobevera
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy
| | - Valerio Daffara
- Department of Orthopaedic Surgery, University of Modena and Reggio Emilia, Modena, Italy
| | - Maristella F Saccomanno
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy
- Department of Bone and Joint Surgery, Spedali Civili, Brescia, Italy
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Savarese E, Aicale R, Torsiello E, Bernardini G, Maffulli N. Long head of biceps tendon augmentation for massive rotator cuff tears improves clinical results regardless of the number of tendons involved. Knee Surg Sports Traumatol Arthrosc 2024; 32:1843-1853. [PMID: 38651602 DOI: 10.1002/ksa.12184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 02/21/2024] [Accepted: 02/28/2024] [Indexed: 04/25/2024]
Abstract
PURPOSE Management of massive rotator cuff tears (MRCTs) remains debated, and various arthroscopic and open techniques have been described for their management. Nevertheless, the optimal strategy remains unclear. The present study evaluated the clinical results in patients managed arthroscopically for MRCTs augmented with the long head biceps tendon (LHBT) at a minimum 1-year follow-up, considering different type of tears, demographic data and number of torn tendons. METHODS Patients treated in a secondary referral centre from January 2021 to April 2022 were enroled prospectively. Inclusion criteria were pain, inability to fully elevate the affected shoulder, irreparable tears and active and motivated patients. All patients were managed within 2 months from diagnosis in a single centre by the same surgeons. Preoperative shoulder radiographs and magnetic resonance imaging (MRI) were collected, and clinical assessment was also performed using the Numerical analogue scale (NAS), Constant score (CS) American Shoulder and Elbow Surgeons Shoulder Score (ASES). Tissue retraction and tendon fatty infiltration were evaluated using Patte and Fuchs scale, respectively. Clinical assessment was performed using the same scales at 3-6 months and 1-year follow-up. RESULTS A total of 55 patients (31 female and 24 male) with a mean age of 60 ± 7.1 years were enroled for a mean follow-up of 18.2 ± 4.3 months. The mean preoperative NAS was 7.8 ± 0.6, CS was 20.5 ± 7.6 and ASES was 22.6 ± 9.2, increasing, respectively, to 0.3 ± 0.6, 91.5 ± 6.9 and 94.2 ± 6.7. No adverse side effects (infection, rejection, allergy) were reported during the study period. All patients were evaluated after surgery at 3 and 6 months and 1 year with statistically significant improvement for each score at the first and last follow-up (p < 0.05). CONCLUSIONS The use of LHBT augmentation in patients with MRCTs in appropriately selected patients is safe and effective and can lead to pain relief and acceptable clinical outcomes. Furthermore, its use carries low donor site morbidity and is cost effective. Comparative studies, including randomised controlled trials, with other proposed techniques are needed to confirm these findings. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Eugenio Savarese
- Department of Orthopaedic and Trauma Surgery, Casa di Cura di Bernardini, Taranto, Italy
| | - Rocco Aicale
- Department of Orthopaedic and Trauma Surgery, Casa di Cura di Bernardini, Taranto, Italy
| | - Ernesto Torsiello
- Department of Musculoskeletal Disorders, Faculty of Medicine and Surgery, University of Salerno, Baronissi, Italy
- Clinica Ortopedica, Ospedale San Giovanni di Dio e Ruggi D'Aragona, Salerno, Italy
| | - Giulio Bernardini
- Department of Orthopaedic and Trauma Surgery, Casa di Cura di Bernardini, Taranto, Italy
| | - Nicola Maffulli
- Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Mile End Hospital, Queen Mary University of London, London, UK
- School of Medicine, Institute of Science and Technology in Medicine, Guy Hilton Research Centre, Thornburrow Drive, Hartshill, Keele University, Stoke-on-Trent, UK
- Department of Trauma and Orthopaedic Surgery, Faculty of Medicine and Psychology, University La Sapienza, Roma, Italy
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Chiang CH, Ho W, Lin CH, Chih WH, Su WR, Hong CK. Modified arthroscopic intra-articular transtendinous looped biceps tenodesis leads to satisfactory functional outcomes and less frequent Popeye deformity compared to biceps tenotomy. J Orthop Surg Res 2023; 18:603. [PMID: 37587498 PMCID: PMC10428633 DOI: 10.1186/s13018-023-04078-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 08/04/2023] [Indexed: 08/18/2023] Open
Abstract
PURPOSE The present study aimed to propose a modified intra-articular transtendinous looped biceps tenodesis (mTLBT) using a suture anchor and to compare the functional outcomes and incidence of Popeye deformities between biceps tenotomy and mTLBT. METHODS Medical records of patients who underwent either tenotomy or mTLBT for the long head of the biceps tendon (LHBT) lesion between January 2016 and April 2021 were retrospectively reviewed. The inclusion criteria were patients aged 40-70 years with LHBT pathologies, such as superior labrum anterior to posterior (SLAP) lesions > type II, LHBT pulley system rupture with bicipital instability, and intra-articular LHBT tear. The exclusion criteria were full-thickness supraspinatus tears, frozen shoulder, shoulder fracture, and postoperative traumatic events that affected the operated shoulder. All patients were followed up for at least 1 year. Popeye deformity, bicipital cramping pain, visual analog scale (VAS) pain score, and functional outcome scores (University of California at Los Angeles [UCLA] and American Shoulder and Elbow Surgeons [ASES] scores) were recorded. Fisher's exact test and Chi-square test were used for categorical variables, whereas the Mann-Whitney U test was used for nonparametric variables. RESULTS The mTLBT and tenotomy groups included 15 and 40 patients, respectively. The incidence of Popeye deformity and biceps cramping pain in the tenotomy group (52.5% and 50%, respectively) was significantly higher than that in the mTLBT group (13.3% and 20%, respectively) (p = 0.009 and p = 0.045, respectively). The postoperative VAS, UCLA, and ASES scores were not significantly different between the two groups. One patient in the tenodesis group experienced metallic-anchor pullout. CONCLUSION mTLBT is an arthroscopic intra-articular top of the groove tenodesis that can be performed completely in the intra-articular space and is especially suitable for patients with an intact or partially torn rotator cuff. This technique is reliable for treating biceps pathologies as it results in similar functional outcome scores, lesser biceps cramping pain, and less frequent Popeye deformity compared to biceps tenotomy. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Chen-Hao Chiang
- Department of Orthopaedics, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Wei Ho
- Department of Orthopaedics, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Chang-Hao Lin
- Department of Orthopaedics, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Wei-Hsing Chih
- Department of Orthopaedics, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Wei-Ren Su
- Department of Orthopaedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No.138, Sheng-Li Road, North Dist., Tainan, 70428, Taiwan
- Skeleton Materials and Bio-Compatibility Core Lab, Research Center of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Musculoskeletal Research Center, Innovation Headquarter, National Cheng Kung University, Tainan, Taiwan
| | - Chih-Kai Hong
- Department of Orthopaedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No.138, Sheng-Li Road, North Dist., Tainan, 70428, Taiwan.
- Department of Orthopaedic Surgery, National Cheng Kung University Hospital, Dou-Liou Branch, Yunlin, Taiwan.
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