S. Uchida

发表

Diagnosing Hip Microinstability: an international consensus study using the Delphi methodology

M. Safran, N. Mohtadi, O. Ayeni, 2022, Knee Surgery, Sports Traumatology, Arthroscopy.

Flt-1 tyrosine kinase-deficient homozygous mice result in decreased trabecular bone volume with reduced osteogenic potential.

S. Niida, Toshitaka Nakamura, A. Sakai, 2007, Bone.

Side population (SP) cells isolated from fetal rat calvaria are enriched for bone, cartilage, adipose tissue and neural progenitors.

J. Aubin, Tomoyuki Inoue, S. Uchida, 2006, Bone.

Cortical bone loss due to skeletal unloading in aldehyde dehydrogenase 2 gene knockout mice is associated with decreased PTH receptor expression in osteocytes.

A. Sakai, Yoshiaki Yamanaka, Takafumi Tajima, 2018, Bone.

Mesenchymal stem cells and their progeny: Developmental paradigms governing osteoblast differentiation & bone formation

J. Aubin, S. Uchida, Shulin Zhang, 2003 .

Arthroscopic Fragment Fixation Using Hydroxyapatite/Poly-L-Lactate Acid Thread Pins for Treating Elbow Osteochondritis Dissecans

Toshitaka Nakamura, Hajime Utsunomiya, A. Sakai, 2015, The American journal of sports medicine.

Effect of the cathepsin K inhibitor odanacatib administered once weekly on bone mineral density in Japanese patients with osteoporosis—a double-blind, randomized, dose-finding study

T. Tomomitsu, M. Fukunaga, A. Santora, 2013, Osteoporosis International.

Reduced Expression of Platelet Endothelial Cell Adhesion Molecule‐1 in Bone Marrow Cells in Mice After Skeletal Unloading

Toshitaka Nakamura, Yoshiya Tanaka, S. Nakayamada, 2005, Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research.

Bisphosphonate (YM529) delays the repair of cortical bone defect after drill-hole injury by reducing terminal differentiation of osteoblasts in the mouse femur.

Toshitaka Nakamura, Masahiro Tanaka, A. Sakai, 2005, Bone.

Fifteen-Year Comparison of Wear and Osteolysis Analysis for Cross-Linked or Conventional Polyethylene in Cementless Total Hip Arthroplasty for Hip Dysplasia-A Retrospective Cohort Study.

H. Ohnishi, Toshiharu Mori, A. Sakai, 2017, The Journal of arthroplasty.

Endoscopic shelf acetabuloplasty combined with labral repair, cam osteochondroplasty, and capsular plication for treating developmental hip dysplasia.

Toshitaka Nakamura, Akihiro Ariumi, H. Iida, 2014, Arthroscopy techniques.

Current Smoking Is Associated with Delayed Wound Healing But Not with Improvement of Contracture after the Open Palm Technique for Dupuytren's Disease.

A. Sakai, Yoshiaki Yamanaka, Takafumi Tajima, 2019, The journal of hand surgery Asian-Pacific volume.

Viability and Tissue Quality of Cartilage Flaps From Patients With Femoroacetabular Hip Impingement: A Matched-Control Comparison

O. Mei-Dan, J. Chahla, A. Richards, 2017, Orthopaedic journal of sports medicine.

Clinical and radiographic predictors of failed hip arthroscopy in the management of dysplasia: a systematic review and proposal for classification

N. Simunovic, J. Kay, O. Ayeni, 2019, Knee Surgery, Sports Traumatology, Arthroscopy.

Arthroscopic Double Shoelace Capsular Plication Technique for the Treatment of Borderline Hip Dysplasia Associated With Capsular Laxity

Hajime Utsunomiya, M. Philippon, K. Kizaki, 2019, Arthroscopy techniques.

Predictors of Poor Clinical Outcome After Arthroscopic Labral Preservation, Capsular Plication, and Cam Osteoplasty in the Setting of Borderline Hip Dysplasia

Dean Matsuda, Hajime Utsunomiya, A. Sakai, 2018, The American journal of sports medicine.

Arthroscopic Shoelace Capsular Closure Technique in the Hip Using Ultratape.

J. Chahla, Hajime Utsunomiya, A. Sakai, 2017, Arthroscopy techniques.

Endoscopic shelf acetabuloplasty can improve clinical outcomes and achieve return to sports-related activity in active patients with hip dysplasia

Dean Matsuda, Hajime Utsunomiya, Toshiharu Mori, 2017, Knee Surgery, Sports Traumatology, Arthroscopy.

Hip Arthroscopic Management Can Improve Osteitis Pubis and Bone Marrow Edema in Competitive Soccer Players With Femoroacetabular Impingement

Dean Matsuda, Hajime Utsunomiya, Hirotaka Nakashima, 2019, The American journal of sports medicine.

Prostaglandin E2 receptor (EP4) selective agonist (ONO-4819.CD) accelerates bone repair of femoral cortex after drill-hole injury associated with local upregulation of bone turnover in mature rats.

Toshitaka Nakamura, Masahiro Tanaka, A. Sakai, 2004, Bone.

Risk Factors for Decrease in The Cross-Sectional Area of the Paraspinal Muscle in 1,849 Individuals: A 10-Year Longitudinal Study

A. Sakai, K. Narusawa, T. Nakagawa, 2021 .

Intra-articular injection versus interscalene brachial plexus block for acute-phase postoperative pain management after arthroscopic shoulder surgery.

Hajime Utsunomiya, K. Kizaki, S. Uchida, 2022, Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association.

OP-JHPS200040 1..8

S. Tateishi, Yasuhiro Yamamoto, N. Watanabe, 2020 .

Subacromial bursitis following human papilloma virus vaccine misinjection.

Toshitaka Nakamura, A. Sakai, S. Uchida, 2012, Vaccine.

Randomized Controlled Trial of Hip Arthroscopy Surgery vs Physical Therapy: Letter to the Editor

M. R. Price, Joshua D. Harris, M. Safran, 2018, The American journal of sports medicine.

Is Arthroscopic Hip Labral Repair/Reconstruction Surgery Effective for Treating Femoroacetabular Impingement in the Presence of Osteoarthritis?

C. Larson, Hajime Utsunomiya, Hirotaka Nakashima, 2019, Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine.

Disruption of the Aldehyde Dehydrogenase 2 Gene Results in No Increase in Trabecular Bone Mass Due to Skeletal Loading in Association with Impaired Cell Cycle Regulation Through p21 Expression in the Bone Marrow Cells of Mice

T. Kawamoto, Toshiharu Mori, A. Sakai, 2017, Calcified Tissue International.

Development of a novel knee contracture mouse model by immobilization using external fixation

A. Sakai, Yoshiaki Yamanaka, Takafumi Tajima, 2021, Connective tissue research.

Hip arthroscopy enables classification and treatment of precollapse subchondral insufficiency fracture of the femoral head associated intra-articular pathology

Dean Matsuda, Hajime Utsunomiya, Toshiharu Mori, 2017, Knee Surgery, Sports Traumatology, Arthroscopy.

Skeletal unloading reduces cluster of differentiation (CD) 38 expression in the bone marrow and osteoblasts of mice.

Yoshiya Tanaka, Hajime Utsunomiya, K. Yamaoka, 2020, Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association.

Editorial Commentary: Mesenchymal Stem Cell Preparation Methods Affect the Properties of Shoulder Subacromial Bursa-Derived Cells.

I. Sekiya, Hajime Utsunomiya, S. Uchida, 2020, Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association.

Calcifying tendonitis of the gastrocnemius. A report of three cases.

T. Nakamura, Y. Iguchi, S. Uchida, 2002, The Journal of bone and joint surgery. British volume.

Increased levels of chondrocalcin in knee joint fluid in synovial chondromatosis--a case report

Toshitaka Nakamura, S. Uchida, T. Yoshioka, 2000, Acta orthopaedica Scandinavica.

Arthroscopic Shoelace Side-to-Side Repair Technique Using Ultratape for the Treatment of Longitudinal Midsubstance Rotator Cuff Tears

A. Sakai, S. Uchida, Hitoshi Suzuki, 2017, Arthroscopy Techniques.

Elbow Ulnar Collateral Ligament Shoelace Repair with Internal Bracing for Treating Throwing Athletes Who Have Ulnar Collateral Ligament Instability

Hajime Utsunomiya, A. Sakai, Yoshiaki Yamanaka, 2021, Arthroscopy techniques.

Shoelace capsular and external rotators closure techniques in posterior (southern) approach to hip joint

K. Kizaki, Fumiharu Yamashita, S. Uchida, 2017, Arthroplasty today.

Association of combined hip-pelvic-lumbar mobility with hip muscle strength and clinical outcomes in patients treated for femoroacetabular impingement syndrome: A case-control study.

Makoto Takahashi, S. Uchida, Y. Murata, 2022, Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association.

Endoscopic Shelf Acetabuloplasty for Treating Acetabular Large Bone Cyst in Patient With Dysplasia

Dean Matsuda, Kazuki Yamada, A. Sakai, 2018, Arthroscopy techniques.

Isolation and Characterization of Synovial Mesenchymal Stem Cell Derived from Hip Joints: A Comparative Analysis with a Matched Control Knee Group

I. Sekiya, Hajime Utsunomiya, Hirotaka Nakashima, 2017, Stem cells international.

Synovial Mesenchymal Stem Cells Derived From the Cotyloid Fossa Synovium Have Higher Self-renewal and Differentiation Potential Than Those From the Paralabral Synovium in the Hip Joint

I. Sekiya, Hajime Utsunomiya, Hirotaka Nakashima, 2018, The American journal of sports medicine.

HMG-CoA reductase inhibitor mobilizes bone marrow--derived endothelial progenitor cells.

J. Isner, K. Walsh, Y. Kureishi, 2001, The Journal of clinical investigation.

Isolation and Characterization of Human Mesenchymal Stem Cells Derived From Shoulder Tissues Involved in Rotator Cuff Tears

I. Sekiya, Toshitaka Nakamura, Hajime Utsunomiya, 2013, The American journal of sports medicine.

Bone Endoscopy and Endoscopic Bony Procedures Around the Hip

T. Lui, Chunbao Li, S. Uchida, 2021, Endoscopy of the Hip and Knee.

Deep gluteal syndrome is defined as a non-discogenic sciatic nerve disorder with entrapment in the deep gluteal space: a systematic review

N. Simunovic, C. Aquino, O. Ayeni, 2020, Knee Surgery, Sports Traumatology, Arthroscopy.

Isolation and Characterization of Synovial Mesenchymal Stem Cells Derived From Patients With Chronic Lateral Ankle Instability: A Comparative Analysis of Synovial Fluid, Adipose Synovium, and Fibrous Synovium of the Ankle Joint

I. Sekiya, Hirotaka Nakashima, A. Sakai, 2022, Orthopaedic journal of sports medicine.

1072 Distal Biceps Brachii Tendon Repairs: A Single-Incision Technique Using a Cortical Button With Interference Screw Versus a Double-Incision Technique Using Suture Fixation Through Bone Tunnels

Kyle T. Aune, Walter A. Laughlin, B. Reider, 2015 .

Biomechanical Evaluation of 4 Suture Techniques for Hip Capsular Closure

G. Dornan, A. Brady, Hajime Utsunomiya, 2022, Orthopaedic journal of sports medicine.

Combined open and arthroscopic approaches in hip preservation surgery

Dean Matsuda, A. Sakai, S. Uchida, 2018 .

Arthroscopic treatment for symptomatic lateral discoid meniscus: The effects of different ages, groups and procedures on surgical outcomes.

Hirotaka Nakashima, A. Sakai, S. Uchida, 2018, The Knee.

Vascular endothelial growth factor is expressed along with its receptors during the healing process of bone and bone marrow after drill-hole injury in rats.

Toshitaka Nakamura, Masahiro Tanaka, A. Sakai, 2003, Bone.

Postoperative Deep Gluteal Syndrome After Hip Arthroscopic Surgery

A. Sakai, H. Martin, K. Kizaki, 2020, Orthopaedic journal of sports medicine.

Exploring the validation of a Japanese version of the International Hip Outcome Tool 12: Reliability, validity, and responsiveness.

S. Tateishi, Yasuhiro Yamamoto, N. Watanabe, 2019, Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association.

Japanese version of the international PROMs "Vail Hip Score": Reliability, validity, and responsiveness according to the COSMIN checklist.

S. Tateishi, Yasuhiro Yamamoto, N. Watanabe, 2019, Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association.

Hip Arthroscopy for Diffuse Idiopathic Skeletal Hyperostosis Using a Capsulotomy-First Approach.

Dean Matsuda, A. Sakai, Y. Yukizawa, 2020, Orthopedics.

Short-term efficacy and safety of collagenase injection for Dupuytren's contracture: Therapy protocol for successful outcomes in a clinical setting.

A. Sakai, Takafumi Tajima, Manabu Tsukamoto, 2019, Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association.

Longitudinal study of risk factors for decreased cross-sectional area of psoas major and paraspinal muscle in 1849 individuals

A. Sakai, K. Narusawa, T. Nakagawa, 2021, Scientific Reports.

Arthroscopic osteochondral autologous transplantation for the treatment of osteochondritis dissecans of the femoral head

Hajime Utsunomiya, A. Sakai, E. Honda, 2017, SICOT-J.

Hip Arthroscopic Osteochondral Autologous Transplantation for Treating Osteochondritis Dissecans of the Femoral Head.

Hajime Utsunomiya, H. Hayashi, A. Sakai, 2015, Arthroscopy techniques.

Hip arthroscopic management for treating a rhythmic gymnast with a large bone cyst at the femoral head in the setting of hip dysplasia—a case report

A. Sakai, S. Uchida, Akihisa Hatakeyama, 2022, Journal of hip preservation surgery.

Endoscopic Shelf Acetabuloplasty in the Treatment of Hip Dysplasia

S. Uchida, 2018 .

15-year comparison of cementless total hip arthroplasty with anatomical or high cup placement for Crowe I to III hip dysplasia.

Toshitaka Nakamura, N. Nakura, H. Tsurukami, 2012, Orthopedics.

Clinical and Radiographic Predictors for Worsened Clinical Outcomes After Hip Arthroscopic Labral Preservation and Capsular Closure in Developmental Dysplasia of the Hip

Toshitaka Nakamura, Hajime Utsunomiya, Toshiharu Mori, 2016, The American journal of sports medicine.

Cleft Sign and Bone Marrow Edema of the Pubic Symphysis Are Associated With Sports and Bony Morphology in Patients With Femoroacetabular Impingement and Labral Tears

Hajime Utsunomiya, A. Sakai, Manabu Tsukamoto, 2022, Orthopaedic journal of sports medicine.

Hip Dysplasia in Athletes

Dean Matsuda, A. Sakai, S. Uchida, 2019, Hip and Groin Pain in the Athlete.

A Prospective, Randomized, Controlled Trial Comparing Conservative Treatment With Trunk Stabilization Exercise to Standard Hip Muscle Exercise for Treating Femoroacetabular Impingement: A Pilot Study

Dean Matsuda, Hajime Utsunomiya, S. Uchida, 2019, Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine.

A Prospective, Randomized, Controlled Trial Comparing Conservative Treatment With Trunk Stabilization Exercise to Standard Hip Muscle Exercise for Treating Femoroacetabular Impingement: A Pilot Study.

Dean Matsuda, Hajime Utsunomiya, S. Uchida, 2017, Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine.

Highly Cross-Linked Polyethylene Reduces Osteolysis Incidence and Wear-Related Reoperation Rate in Cementless Total Hip Arthroplasty Compared With Conventional Polyethylene at a Mean 12-Year Follow-Up.

H. Ohnishi, Toshiharu Mori, A. Sakai, 2017, The Journal of arthroplasty.

Factors associated with mortality among patients with necrotizing soft tissue infections: An analysis of 4597 cases using the Diagnosis Procedure Combination Database.

S. Matsuda, Y. Fujino, A. Sakai, 2020, International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases.

Patients aged in their 70s do not have a high risk of progressive osteoarthritis following arthroscopic femoroacetabular impingement correction and labral preservation surgery

Dean Matsuda, Hajime Utsunomiya, Hirotaka Nakashima, 2019, Knee Surgery, Sports Traumatology, Arthroscopy.

A Comparison of Clinical Outcome Between Athletes and Nonathletes Undergoing Hip Arthroscopy for Femoroacetabular Impingement

Hajime Utsunomiya, A. Sakai, S. Uchida, 2017, Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine.

Posterolateral corner of the knee: an expert consensus statement on diagnosis, classification, treatment, and rehabilitation

Charles H. Brown, James R. Robinson, L. Engebretsen, 2018, Knee Surgery, Sports Traumatology, Arthroscopy.

Arthroscopic Technique for Isolated Posterolateral Rotational Instability of the Knee.

A. Sakai, C. Pascual-Garrido, S. Uchida, 2017, Arthroscopy techniques.

Transient expression of activin betaA mRNA on osteoprogenitor cells in rat bone regeneration after drill-hole injury.

S. Fujimoto, Y. Doi, H. Kudo, 2000, Bone.

Closed Reduction and Immobilization for Traumatic Isolated Dislocation of the Carpometacarpal Joint of the Thumb in Rugby Football Players

Toshitaka Nakamura, N. Okimoto, Y. Okazaki, 2001, The American journal of sports medicine.

Surgical management of obturator neuropathy with a concomitant acetabular labral tear — a case report

A. Sakai, S. Uchida, Eiichiro Nakamura, 2018, Acta orthopaedica.

Surgical Management with Self-Locking Pins and Circumferential Wiring for Treating Comminuted Patella Fractures Achieved Seiza-Style Sitting

D. Mori, K. Kizaki, Fumiharu Yamashita, 2019, Joints.

The prevalence and risk factors of pubic bone marrow edema in femoroacetabular impingement and hip dysplasia

A. Sakai, S. Uchida, Akihisa Hatakeyama, 2021, Journal of hip preservation surgery.

Higher risk of cam regrowth in adolescents undergoing arthroscopic femoroacetabular impingement correction: a retrospective comparison of 33 adolescent and 74 adults

Hajime Utsunomiya, A. Sakai, S. Uchida, 2019, Acta orthopaedica.

Effect of metformin treatment and its time of administration on joint capsular fibrosis induced by mouse knee immobilization

A. Sakai, Takafumi Tajima, Manabu Tsukamoto, 2021, Scientific Reports.

Microstructure of osteophytes in medial knee osteoarthritis

K. Azuma, K. Kizaki, Fumiharu Yamashita, 2018, Clinical Rheumatology.

Clinical and Radiographic Predictors for Unsalvageable Labral Tear at the Time of Initial Hip Arthroscopic Management for Femoroacetabular Impingement

Hajime Utsunomiya, Hirotaka Nakashima, A. Sakai, 2019, The American journal of sports medicine.

Comparison Between Hip Arthroscopic Surgery and Periacetabular Osteotomy for the Treatment of Patients With Borderline Developmental Dysplasia of the Hip: A Systematic Review

G. Dornan, M. Philippon, N. Fukase, 2021, Orthopaedic journal of sports medicine.

Attenuation of Post‐Traumatic Osteoarthritis After Anterior Cruciate Ligament Injury Via Inhibition of Hedgehog Signaling

K. Sabanai, A. Sakai, Manabu Tsukamoto, 2019, Journal of orthopaedic research : official publication of the Orthopaedic Research Society.

Inflammation and Degeneration in Cartilage Samples from Patients with Femoroacetabular Impingement.

M. Kurosaka, R. Kuroda, S. Hashimoto, 2016, The Journal of bone and joint surgery. American volume.

Delayed cortical bone healing due to impaired nuclear Nrf2 translocation in COPD mice.

K. Azuma, A. Sakai, Takafumi Tajima, 2023, Bone.

Arthroscopic Treatment of a Displaced Nonunion of the Anterior Inferior Iliac Spine Causing Extra-articular Impingement.

Dean Matsuda, E. Honda, S. Uchida, 2017, Orthopedics.

T. Kawamoto, Toshiharu Mori, A. Sakai, 2017, Calcified Tissue International.

Intermittent Administration of Human Parathyroid Hormone(1–34) Prevents Immobilization‐Related Bone Loss by Regulating Bone Marrow Capacity for Bone Cells in ddY Mice

Toshitaka Nakamura, T. Norimura, R. Okazaki, 1999, Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research.

Association between the expression of inducible nitric oxide synthase by chondrocytes and its nitric oxide-generating activity in adjuvant arthritis in rats.

Hideo Utsumi, Ken-ichi Yamada, Akiko Mori, 2003, Nitric oxide : biology and chemistry.

A biomechanical analysis of ischiofemoral impingement in a cadaver model

P. Quinn, A. Brady, Hajime Utsunomiya, 2020, Journal of hip preservation surgery.

The posteromedial corner of the knee: an international expert consensus statement on diagnosis, classification, treatment, and rehabilitation

Charles H. Brown, James R. Robinson, A. Weiler, 2020, Knee Surgery, Sports Traumatology, Arthroscopy.

Arthroscopic anterior inferior iliac spine decompression does not alter postoperative muscle strength

S. Tateishi, C. Larson, Makoto Takahashi, 2018, Knee Surgery, Sports Traumatology, Arthroscopy.

Radiologic Correlation Between the Ischiofemoral Space and Morphologic Characteristics of the Hip in Hips With Symptoms of Dysplasia.

Dean Matsuda, Hirotaka Nakashima, A. Sakai, 2018, AJR. American journal of roentgenology.

Accurate cup placement using a portable navigation system during total hip arthroplasty based on pelvic orientation in the lateral decubitus position.

A. Sakai, M. Kawasaki, Manabu Tsukamoto, 2022, Artificial organs.

Differentiation potential of synovial mesenchymal stem cells isolated from hip joints affected by femoroacetabular impingement syndrome versus osteoarthritis.

I. Sekiya, J. Huard, Hajime Utsunomiya, 2020, Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association.

Arthroscopic Technique to Reduce Suture Button Migration During Anterior Cruciate Ligament Reconstruction Procedure

Hajime Utsunomiya, A. Sakai, S. Uchida, 2017, Arthroscopy techniques.

Endoscopic Technique to Remove Endobutton After Anterior Cruciate Ligament Reconstruction.

Dean Matsuda, S. Uchida, Tomoya Arashi, 2023, Arthroscopy techniques.

An Anatomical Study of the Anterosuperior Capsular Attachment Site on the Acetabulum

M. Tsutsumi, K. Akita, A. Nimura, 2019, The Journal of bone and joint surgery. American volume.

Endoscopic Shelf Acetabuloplasty Concomitant With Labral Repair, Cam Osteoplasty, and Capsular Plication to Treat Acetabular Dysplasia in Artistic Athletes: A Case Series

Hajime Utsunomiya, A. Sakai, Manabu Tsukamoto, 2021, Orthopaedic journal of sports medicine.

Cotyloid Fossa Coverage Percentages May Be Associated With Alpha Angle, Labral Tear, and Clinical Outcomes in Patients With Femoroacetabular Impingement

Charles P. Ho, M. Philippon, N. Fukase, 2021, The American journal of sports medicine.

How Useful Is the Flexion-Adduction-Internal Rotation Test for Diagnosing Femoroacetabular Impingement: A Systematic Review.

Jaymee R. Shell, N. Simunovic, O. Ayeni, 2018, Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine.

Validity of the Japanese Orthopaedic Association Hip Disease Evaluation Questionnaire (JHEQ) for Japanese patients with labral tear

S. Tateishi, Yasuhiro Yamamoto, N. Watanabe, 2020, Journal of hip preservation surgery.

Clinical and radiographic predictors of failed hip arthroscopy in the management of dysplasia: a systematic review and proposal for classification

N. Simunovic, J. Kay, O. Ayeni, 2019, Knee Surgery, Sports Traumatology, Arthroscopy.