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Article: Myopericytoma of the patella with local recurrence and patellectomy: A case report.

Sakuda, Tomohiko / Furuta, Taisuke / Adachi, Nobuo

International journal of surgery case reports

2024 Volume 115, Page(s) 109263

Abstract: Introduction and importance: Myopericytomas are tumors originating from perivascular myoid cells and exhibiting a wide range of histologic growth patterns. They rarely occur in bones, and no case of myopericytoma in the patella has been reported so far.! ...

Abstract	Introduction and importance: Myopericytomas are tumors originating from perivascular myoid cells and exhibiting a wide range of histologic growth patterns. They rarely occur in bones, and no case of myopericytoma in the patella has been reported so far. Case presentation: A 74-year-old male presented with a chief complaint of pain in the left knee. Magnetic resonance imaging revealed bone tumor and osteolytic lesions of the patella. The patient underwent bone tumor curettage and filling of the cavity with artificial bone. However, as the tumor reoccurred, a patellectomy was performed. The patient regained premorbid functional status after surgery. Additionally, there was no radiological evidence of recurrence of the lesion 3 years after patellectomy. Clinical discussion: Myopericytoma of the patella is very rare. However, it should be considered for the differential diagnosis of lytic lesions of the bone. Although surgery is curative, patellectomy may be necessary for recurrent cases. Conclusion: In conclusion, we report the first case of patellar myopericytoma. Although patellar myopericytoma might be rare, it should be considered for the differential diagnosis of lytic lesions of the bone. Surgery is curative; however, patellectomy may be necessary in recurrent cases.
Language	English
Publishing date	2024-01-13
Publishing country	Netherlands
Document type	Case Reports
ISSN	2210-2612
ISSN	2210-2612
DOI	10.1016/j.ijscr.2024.109263
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Article ; Online: Editorial Commentary: The Benefits of Three-Dimensional Computed Tomography Images to Evaluate the Safety of All-Inside Meniscal Repair.

Adachi, Nobuo

Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association

2019 Volume 35, Issue 5, Page(s) 1565–1566

Abstract: All-inside meniscal repair is a useful alternative to inside-out repair, particularly for the posterior horn of the lateral meniscus, because open approach to the complex posterolateral corner can be avoided. However, risk to the neurovascular structures ...

Abstract	All-inside meniscal repair is a useful alternative to inside-out repair, particularly for the posterior horn of the lateral meniscus, because open approach to the complex posterolateral corner can be avoided. However, risk to the neurovascular structures is a major concern, and surgeons must be aware of portal placement, degree of penetration, patient size, and patient positioning. Imaging studies may be misleading, as they are generally obtained with the knee in extension. In the future, advanced imaging by 3-dimensional computed tomography may better allow us to preoperatively plan for a safe approach to the posterior horn of the lateral meniscus using all-inside repair techniques.
MeSH term(s)	Humans ; Knee Joint ; Menisci, Tibial ; Patient Positioning ; Tibial Meniscus Injuries ; Tomography, X-Ray Computed
Language	English
Publishing date	2019-05-04
Publishing country	United States
Document type	Editorial ; Comment
ZDB-ID	632528-2
ISSN	1526-3231 ; 0749-8063
ISSN (online)	1526-3231
ISSN	0749-8063
DOI	10.1016/j.arthro.2019.02.038
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Article ; Online: Evaluation of articular cartilage degeneration in patients with osteonecrosis of the femoral head using T2 mapping magnetic resonance imaging.

Kaneta, Hiroki / Shoji, Takeshi / Shozen, Hideki / Ueki, Shinichi / Adachi, Nobuo

Modern rheumatology

2024

Abstract: Objectives: To evaluate and characterise articular cartilage degeneration in patients with osteonecrosis of the femoral head (ONFH) using T2 mapping magnetic resonance imaging (MRI).: Methods: We reviewed 35 patients with ONFH (20 males and 15 ... ...

Abstract	Objectives: To evaluate and characterise articular cartilage degeneration in patients with osteonecrosis of the femoral head (ONFH) using T2 mapping magnetic resonance imaging (MRI). Methods: We reviewed 35 patients with ONFH (20 males and 15 females, mean age 45.7±12.9 years) without obvious cartilage abnormalities on plain MRI (ONFH group) and 25 healthy volunteers (9 males and 16 females, mean age 42.9±5.8 years) (control group). All patients underwent T2 mapping MRI after ONFH onset. The region of interest was defined as the weight-bearing portion of the articular cartilage in the femoral head and acetabulum in the coronal view. Results: The T2 values of the articular cartilage of the acetabulum and femoral head, including necrotic and normal regions, were significantly higher in the ONFH group than those in the control group. These T2 values of the acetabulum and femoral head in stages 3A and 2 were significantly higher in the ONFH group than those in the control group. Conclusions: The articular cartilage of the acetabulum and femoral head can deteriorate after the onset of ONFH, which may affect the natural history of ONFH and ONFH treatment. Our findings suggest the need for early intervention in joint preservation surgery.
Language	English
Publishing date	2024-05-03
Publishing country	England
Document type	Journal Article
ZDB-ID	2078157-X
ISSN	1439-7609 ; 1439-7595
ISSN (online)	1439-7609
ISSN	1439-7595
DOI	10.1093/mr/roae020
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Article: Dependence on visual information in patients with ACL injury for multi-joint coordination during single-leg squats: a case control study.

Toriyama, Minoru / Nakamae, Atsuo / Abe, Takumi / Hirata, Kazuhiko / Adachi, Nobuo

BMC sports science, medicine & rehabilitation

2024 Volume 16, Issue 1, Page(s) 87

Abstract: Background: The influence of vision on multi-joint control during dynamic tasks in anterior cruciate ligament (ACL) deficient patients is unknown. Thus, the purpose of this study was to establish a new method for quantifying neuromuscular control by ... ...

Abstract	Background: The influence of vision on multi-joint control during dynamic tasks in anterior cruciate ligament (ACL) deficient patients is unknown. Thus, the purpose of this study was to establish a new method for quantifying neuromuscular control by focusing on the variability of multi-joint movement under conditions with different visual information and to determine the cutoff for potential biomarkers of injury risk in ACL deficient individuals. Methods: Twenty-three ACL deficient patients and 23 healthy subjects participated in this study. They performed single-leg squats under two different conditions: open eyes (OE) and closed eyes (CE). Multi-joint coordination was calculated with the coupling angle of hip flexion, hip abduction and knee flexion. Non-linear analyses were performed on the coupling angle. Dependence on vision was compared between groups by calculating the CE/OE index for each variable. Cutoff values were calculated using ROC curves with ACL injury as the dependent variable and significant variables as independent variables. Results: The sample entropy of the coupling angle was increased in all groups under the CE condition (P < 0.001). The CE/OE index of coupling angle variability during the descending phase was higher in ACL deficient limbs than in the limbs of healthy participants (P = 0.036). The CE/OE index of sample entropy was higher in the uninjured limbs of ACL deficient patients than in the limbs of healthy participants (P = 0.027). The cutoff value of the CE/OE index of sample entropy was calculated to be 1.477 (Sensitivity 0.957, specificity 0.478). Conclusion: ACL deficient patients depended on vision to control multiple joint movements not only on the ACL deficient side but also on the uninjured side during single leg squat task. These findings underscore the importance of considering visual dependence in the assessment and rehabilitation of neuromuscular control in ACL deficient individuals.
Language	English
Publishing date	2024-04-17
Publishing country	England
Document type	Journal Article
ZDB-ID	2719537-5
ISSN	2052-1847
ISSN	2052-1847
DOI	10.1186/s13102-024-00875-9
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Article: On-Top Osteotomy of the Phalanx Base Combined With Modified Bilhaut: Cloquet Procedure for Atypical Radial Polydactyly.

Kodama, Akira / Ishibashi, Shigeki / Munemori, Masaru / Tsuji, Kentarou / Adachi, Nobuo

Cureus

2024 Volume 16, Issue 1, Page(s) e53285

Abstract: In this report, we present the combination of on-top plasty with a modified Bilhaut-Cloquet procedure for treating atypical radial polydactyly with duplication at the metacarpophalangeal (MP) joint and triphalangism of the radial and ulnar phalanges, ... ...

Abstract	In this report, we present the combination of on-top plasty with a modified Bilhaut-Cloquet procedure for treating atypical radial polydactyly with duplication at the metacarpophalangeal (MP) joint and triphalangism of the radial and ulnar phalanges, hypoplastic middle phalanx of the radial thumb, and hypoplastic phalanx base of the ulnar thumb. To preserve the stable MP and interphalangeal joints of the radial and ulnar thumbs, respectively, on-top plasty involved osteotomizing the middle phalanx and transferring the distal end of the middle phalanx of the ulnar finger to the phalanx base of the radial thumb. A modified Bilhaut-Cloquet procedure was used to combine the tips and nails of both thumbs. Twelve months postoperatively, good joint alignment and thumb tip appearance were achieved. On-top plasties effectively combined the desirable parts of both thumbs. The modified Bilhaut-Cloquet technique is particularly well-suited for atypical cases, such as the present case.
Language	English
Publishing date	2024-01-31
Publishing country	United States
Document type	Case Reports
ZDB-ID	2747273-5
ISSN	2168-8184
ISSN	2168-8184
DOI	10.7759/cureus.53285
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Article: Nonunion of Isolated Medial Cuneiform Fracture Fixed With a Compression Screw and Compression Staple: A Case Report.

Kanemitsu, Munekazu / Nakasa, Tomoyuki / Shiraishi, Katsunori / Ikuta, Yasunari / Adachi, Nobuo

Cureus

2024 Volume 16, Issue 4, Page(s) e58074

Abstract: Isolated cuneiform fractures are rare and account for only 1.7% of all midfoot fractures. Medial cuneiform fractures can be treated conservatively or surgically, with good clinical outcomes. However, nonunion is a rare complication of medial cuneiform ... ...

Abstract	Isolated cuneiform fractures are rare and account for only 1.7% of all midfoot fractures. Medial cuneiform fractures can be treated conservatively or surgically, with good clinical outcomes. However, nonunion is a rare complication of medial cuneiform fractures, and only a few cases have been reported in the literature. We report a case of a medial cuneiform fracture requiring surgical treatment that had a good clinical outcome. A 15-year-old boy presented to an orthopedic clinic with a complaint of pain in his right foot. The patient had landed on the foot during a handball game and was treated conservatively for several months. However, his symptoms persisted, and he was referred to our clinic for further evaluation, where he was diagnosed with medial cuneiform nonunion of the right foot. Open reduction and internal fixation surgery using a compression screw and staple and autologous bone grafting were performed. Postoperatively, bone union was observed, and the patient returned to full competition with no complaints of pain during exercise. The Self-Administered Foot Evaluation Questionnaire (SAFE-Q) score at 21 months after surgery was 100.0 for the following subscales: Pain & Pain-Related; Physical Functioning & Daily Living; Social Functioning; Shoe-Related; General Health & Well-Being; and Sport (handball). We encountered a case of an isolated medial cuneiform fracture that required surgical treatment. During the surgical treatment, fixation with a combination of compression staples and screws may be considered simple and useful for achieving strong fixation because the medial cuneiform fracture has a small bone fragment.
Language	English
Publishing date	2024-04-11
Publishing country	United States
Document type	Case Reports
ZDB-ID	2747273-5
ISSN	2168-8184
ISSN	2168-8184
DOI	10.7759/cureus.58074
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Article: Plantar Plate Repair using Suture Anchors for Chronic Plantar Plate Rupture of the first Interphalangeal Joint in a Pediatric Patient: A Case Report.

Ikuta, Yasunari / Nakasa, Tomoyuki / Kawabata, Shingo / Adachi, Nobuo

Journal of orthopaedic case reports

2023 Volume 13, Issue 9, Page(s) 83–87

Abstract: Introduction: Injuries of the great toe are common sports-related injuries; however, isolated traumatic plantar plate tears at the interphalangeal (IP) joint are relatively rare. Here, we present a pediatric case of a chronic plantar plate tear of the ... ...

Abstract	Introduction: Injuries of the great toe are common sports-related injuries; however, isolated traumatic plantar plate tears at the interphalangeal (IP) joint are relatively rare. Here, we present a pediatric case of a chronic plantar plate tear of the IP joint of the great toe that was difficult to diagnose definitively, which delayed surgical treatment. Case report: An 11-year-old girl was injured when she collided with her right great toe while using a jump box during gymnastics. She felt pain in her great toe that progressively worsened despite conservative treatment at an initial clinic, and she experienced hyperextension of the IP joint. She was referred to our outpatient clinic because of diagnostic difficulty and increased symptoms, such as pain and swelling of the plantar side of her right great toe. Physical examination revealed swelling and tenderness on the plantar aspect of the IP joint and the impossibility of active flexion of the IP joint. The passive range of motion was 35° during extension. Ultrasonography revealed a low-echoic area on the plantar plate on the phalangeal side. Thus, we diagnosed the patient with a chronic plantar plate tear of the IP joint of the right great toe and performed surgical treatment 8 months after its onset. The plantar plate ruptured at the insertion of the proximal phalanx; however, the insertion of the distal phalanx remained intact. The plantar plate was repaired using suture anchors, and excellent short-term postoperative results were obtained at the 1-year follow-up. Conclusion: Isolated plantar plate rupture is difficult to diagnose definitively in the acute phase because of the lack of specific findings on physical and radiographic examinations. Plantar plate rupture should be suspected as a differential diagnosis in patients with great toe injuries due to axial load and hyperextension forces. Plantar plate repair using suture anchors may be a useful option for treating plantar plate tears of the IP joint of the great toe when its insertion into the distal phalanx is preserved, even during the chronic phase.
Language	English
Publishing date	2023-09-16
Publishing country	India
Document type	Case Reports
ZDB-ID	2658169-3
ISSN	2250-0685
ISSN	2250-0685
DOI	10.13107/jocr.2023.v13.i09.3886
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Article: Decreased Joint Position Sense of the Ankle Joint Is a Risk Factor for Falls in the Elderly.

Kanemitsu, Munekazu / Nakasa, Tomoyuki / Ikuta, Yasunari / Adachi, Nobuo

Cureus

2023 Volume 15, Issue 12, Page(s) e51084

Abstract: Background: Falls in the elderly are common causes of morbidity, mortality, loss of independence, and poor quality of life. We hypothesized that decreased ankle position sense is one among several risk factors that might lead to falls.: Methods: A ... ...

Abstract	Background: Falls in the elderly are common causes of morbidity, mortality, loss of independence, and poor quality of life. We hypothesized that decreased ankle position sense is one among several risk factors that might lead to falls. Methods: A total of 54 feet from 28 patients over 65 years of age and 10 feet from five healthy volunteers were included. Measurements of ankle position sense, medical history, and fall history within a year were obtained, which were compared between the groups. Results: The mean replication error angle of internal and external rotation was significantly higher in the elderly, and the mean replication error angle of internal rotation was significantly higher in the group with a history of falls. Conclusion: The mean replication error angle of internal rotation and a history of fractures were significant risk factors for falls. Hence, an increase in the mean replication error angle of internal rotation may increase the risk of falls in the elderly population.
Language	English
Publishing date	2023-12-25
Publishing country	United States
Document type	Journal Article
ZDB-ID	2747273-5
ISSN	2168-8184
ISSN	2168-8184
DOI	10.7759/cureus.51084
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Article: Achilles Tendon Reconstruction Using a Hamstring Tendon Autograft for Chronic Rupture of the Achilles Tendon in Patients Over 70 Years of Age: A Retrospective Case Series.

Ikuta, Yasunari / Nakasa, Tomoyuki / Kawabata, Shingo / Adachi, Nobuo

Cureus

2023 Volume 15, Issue 8, Page(s) e42788

Abstract: Reconstruction techniques using autologous hamstring tendons were generally applied for chronic Achilles tendon rupture with a large defect size. Previous studies have reported good clinical results of this technique for young or middle-aged patients, ... ...

Abstract	Reconstruction techniques using autologous hamstring tendons were generally applied for chronic Achilles tendon rupture with a large defect size. Previous studies have reported good clinical results of this technique for young or middle-aged patients, however, the clinical outcomes in older patients have been unclear. This retrospective case series reviewed four male patients aged >70 years (mean age, 78.5 years) who underwent Achilles tendon reconstruction using the hamstring tendon autograft for chronic rupture of the Achilles tendon with a large tendon defect. The proximal-distal length between the healthy tendon stumps was measured using sagittal T2-weighted magnetic resonance imaging (MRI). The American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score and postoperative complications were evaluated. The duration from the traumatic event or appearance of symptoms to surgery was 3.8 (range, 2-6) months. The mean measured gap between the healthy tendon stumps was 67.5 mm on MRI. The AOFAS ankle-hindfoot score improved from 67.3 to 99.5 at the mean follow-up period of 40.3 (range, 23-75) months. No donor site morbidity was observed in all patients. Re-rupture was detected at the five-month follow-up in one patient who had removed a hinged ankle-foot orthosis with adjustable heel wedges without permission. Achilles tendon reconstruction using a hamstring tendon is a viable option for treating selected patients with chronic rupture of the Achilles tendon with a large tendon defect even in older patients. To improve clinical outcomes, a better understanding should be provided to family members as well as older patients regarding the postoperative rehabilitation program.
Language	English
Publishing date	2023-08-01
Publishing country	United States
Document type	Case Reports
ZDB-ID	2747273-5
ISSN	2168-8184
ISSN	2168-8184
DOI	10.7759/cureus.42788
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Article ; Online: Outcomes of Revision Unlinked Total Elbow Arthroplasty for Rheumatoid Elbow.

Kodama, Akira / Mizuseki, Takaya / Adachi, Nobuo

The journal of hand surgery Asian-Pacific volume

2023 Volume 28, Issue 4, Page(s) 479–485

Abstract: Background: ...

Abstract	Background:
Language	English
Publishing date	2023-09-25
Publishing country	Singapore
Document type	Journal Article
ZDB-ID	2848651-1
ISSN	2424-8363 ; 2424-8355
ISSN (online)	2424-8363
ISSN	2424-8355
DOI	10.1142/S2424835523500558
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