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Surgical Repair of Acetabular Fracture Using Unidirectional Porous β-Tricalcium Phosphate

We report a case of an acetabular fracture treated using a unidirectional porous β-tricalcium phosphate artificial bone (Affinos®) to surgically repair bone defects. An 82-year-old man sustained an acetabular fracture on the left side and presented with shock on arrival along with impaired vital signs and systolic blood pressure. Upon stabilization, we performed an open reduction...

Quantitative assessment of mesenchymal stem cells contained in concentrated autologous bone marrow aspirate transplantation for the treatment of osteonecrosis of the femoral head: predictive factors and differences by etiology

ObjectiveWe previously established concentrated autologous bone marrow aspirate transplantation as a one-step, lowly invasive, joint-preserving surgical technique for treating osteonecrosis of the femoral head. The objectives of this study were to identify factors that may predict the mesenchymal stem cell (MSC) count in bone marrow aspirate, concentrated using our method, and to...

Robot-assisted voluntary initiation reduces control-related difficulties of initiating joint movement: A phenomenal questionnaire study on shaping and compensation of forward gait

, Hideki Kadone, Yoshiyuki Sankai, Kenji Suzuki. Data curation: Patrick GruÈneberg, Hideki Kadone, Naomi Kuramoto, Tomoyuki Ueno, Yasushi Hada, Masashi Yamazaki, Kenji Suzuki. Formal analysis: Patrick ... GruÈneberg. Resources: Hideki Kadone, Tomoyuki Ueno, Yasushi Hada, Masashi Yamazaki. Visualization: Patrick GruÈneberg, Hideki Kadone, Kenji Suzuki. Writing ± original draft: Patrick GruÈneberg, Hideki

Surgical treatment for dropped head syndrome with cervical spondylotic amyotrophy: a case report

BackgroundDropped head syndrome (DHS) is a flexion deformity of the neck that is caused by severe weakness of the neck extensor muscles. DHS occurs in combination with not only neuromuscular disorders, but also cervical spondylosis. However, there are few reports of DHS complicated by cervical spondylotic amyotrophy (CSA). Here we report a case of DHS with CSA in a patient who...

Surgical treatment for dropped head syndrome with cervical spondylotic amyotrophy: a case report

Dropped head syndrome (DHS) is a flexion deformity of the neck that is caused by severe weakness of the neck extensor muscles. DHS occurs in combination with not only neuromuscular disorders, but also cervical spondylosis. However, there are few reports of DHS complicated by cervical spondylotic amyotrophy (CSA). Here we report a case of DHS with CSA in a patient who underwent...

Subacute Urinary Retention due to a Subpubic Cartilaginous Cyst Treated with Surgical Resection and Internal Fixation: A Case Report and Review of the Literature

A subpubic cartilaginous cyst is a rare mass lesion derived from the pubic symphysis, which can cause acute or subacute urinary retention. We report a case of a subpubic cartilaginous cyst in a 62-year-old woman that caused lower abdominal pain and subacute urinary retention, requiring surgical resection. On physical examination, a hard, flexible, nontender mass, 4 cm in diameter...

Subacute Urinary Retention due to a Subpubic Cartilaginous Cyst Treated with Surgical Resection and Internal Fixation: A Case Report and Review of the Literature

A subpubic cartilaginous cyst is a rare mass lesion derived from the pubic symphysis, which can cause acute or subacute urinary retention. We report a case of a subpubic cartilaginous cyst in a 62-year-old woman that caused lower abdominal pain and subacute urinary retention, requiring surgical resection. On physical examination, a hard, flexible, nontender mass, 4 cm in diameter...

Comparative Analysis of Cellular and Growth Factor Composition in Bone Marrow Aspirate Concentrate and Platelet-Rich Plasma

Kumagai,3 Kojiro Hyodo,3 Osamu Ohneda,2 Masashi Yamazaki,3 and Hajime Mishima3 1Division of Regenerative Medicine for Musculoskeletal System, Department of Orthopedics Surgery, Faculty of Medicine

Comparative Analysis of Cellular and Growth Factor Composition in Bone Marrow Aspirate Concentrate and Platelet-Rich Plasma

Kumagai,3 Kojiro Hyodo,3 Osamu Ohneda,2 Masashi Yamazaki,3 and Hajime Mishima3 1Division of Regenerative Medicine for Musculoskeletal System, Department of Orthopedics Surgery, Faculty of Medicine

Autologous Concentrated Bone Marrow Grafting for the Treatment of Osteonecrosis of the Humeral Head: A Report of Five Shoulders in Four Cases

,1,2 Masashi Yamazaki,1 and Hajime Mishima1 1Department of Orthopaedics Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan 2Division of Regenerative

Autologous Concentrated Bone Marrow Grafting for the Treatment of Osteonecrosis of the Humeral Head: A Report of Five Shoulders in Four Cases

,1,2 Masashi Yamazaki,1 and Hajime Mishima1 1Department of Orthopaedics Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan 2Division of Regenerative

The Training Effect of Early Intervention with a Hybrid Assistive Limb after Total Knee Arthroplasty

After total knee arthroplasty (TKA), it is important for patients to show early improvements in knee joint function and walking to regain independence in performing the activities of daily life. We conducted for 4 weeks an intervention one week after TKA using a hybrid assistive limb (HAL: unilateral leg type) as an exoskeleton robotic device to facilitate knee joint function and...

Hybrid Assistive Limb Intervention in a Patient with Late Neurological Deterioration after Thoracic Myelopathy Surgery due to Ossification of the Ligamentum Flavum

benefit to the authors (Masakazu Taketomi, Yukiyo Shimizu, Hideki Kadone, Shigeki Kubota, Tetsuya Abe, Aiki Marushima, Tomoyuki Ueno, Yasushi Hada, and Masashi Yamazaki) or on any organization with which ... helped to draft the manuscript. Hiroaki Kawamoto and Akira Matsumura contributed to the gross planning and organization of the research project of HAL clinical trials. Masashi Yamazaki is the principal

Reducing the risk of impaired bone apposition to titanium screws with the use of fibroblast growth factor-2−apatite composite layer coating

Kengo Fujii Atsuo Ito 0 Hirotaka Mutsuzaki Shinji Murai Yu Sogo 0 Yuki Hara Masashi Yamazaki 0 Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) , Central

Lateral Lumbar Interbody Fusion for Ossification of the Yellow Ligament in the Lumbar Spine: First Reported Case

, Katsuya Nagashima, Hiroshi Kumagai, and Masashi Yamazaki Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan Correspondence

Lateral Lumbar Interbody Fusion for Ossification of the Yellow Ligament in the Lumbar Spine: First Reported Case

, Katsuya Nagashima, Hiroshi Kumagai, and Masashi Yamazaki Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan Correspondence

Knee-Extension Training with a Single-Joint Hybrid Assistive Limb during the Early Postoperative Period after Total Knee Arthroplasty in a Patient with Osteoarthritis

associated (Tomokazu Yoshioka, Hisashi Sugaya, Shigeki Kubota, Mio Onishi, Akihiro Kanamori, and Masashi Yamazaki). References K. Y. Chiu, T. P. Ng, W. M. Tang, and W. P. Yau, “Review article: knee

Knee-Extension Training with a Single-Joint Hybrid Assistive Limb during the Early Postoperative Period after Total Knee Arthroplasty in a Patient with Osteoarthritis

associated (Tomokazu Yoshioka, Hisashi Sugaya, Shigeki Kubota, Mio Onishi, Akihiro Kanamori, and Masashi Yamazaki). References K. Y. Chiu, T. P. Ng, W. M. Tang, and W. P. Yau, “Review article: knee