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Trapezium Bone

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1. Trapezium Bone Density—A Comparison of Measurements by DXA and CT (PubMed)

Trapezium Bone Density—A Comparison of Measurements by DXA and CT Bone density may influence the primary fixation of cementless implants, and poor bone density may increase the risk of implant failure. Before deciding on using total joint replacement as treatment in osteoarthritis of the trapeziometacarpal joint, it is valuable to determine the trapezium bone density. The aim of this study was to: (1) determine the correlation between measurements of bone mineral density of the trapezium (...) wrist scans. There was an excellent correlation (r = 0.94) between DXA bone mineral density measures using the circumference and the inner-ellipse method. There was a moderate correlation between bone density measures obtained by DXA- and CT-scans with (r = 0.49) for the circumference method, and (r = 0.55) for the inner-ellipse method. DXA may be used in pre-operative evaluation of the trapezium bone quality, and the simpler DXA inner-ellipse measurement method can replace the DXA circumference

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2018 Journal of functional biomaterials

2. Trapezium Bone

Trapezium Bone Trapezium Bone Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Trapezium Bone Trapezium Bone Aka: Trapezium Bone (...) , Greater Multangular Bone , Trapezium II. Anatomy Lewis (1918) Gray's Anatomy 20th ed (in at or ) Images: Related links to external sites (from Bing) These images are a random sampling from a Bing search on the term "Trapezium Bone." Click on the image (or right click) to open the source website in a new browser window. Related Studies (from Trip Database) Ontology: Bone structure of trapezium (C0223736) Definition (NCI_CDISC) A carpal bone on the thumb side of the hand that articulates with the 1st

2018 FP Notebook

3. Osteoid Osteoma of the Trapezium: Case Report of an Unusual Tumor Location Presenting a Diagnostic Challenge (PubMed)

Osteoid Osteoma of the Trapezium: Case Report of an Unusual Tumor Location Presenting a Diagnostic Challenge Osteoid osteoma is a benign bone tumor, which represents approximately 10% of all benign bone tumors. When localized to the carpus, osteoid osteomas are most often seen in the scaphoid and capitate. Rarely, these tumors can also be observed in the trapezium. Given the infrequency with which osteomas are located in the trapezium and often nonspecific presenting symptoms, diagnosis

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2017 Case reports in orthopedics

4. A Case of Trapezium Avascular Necrosis Treated Conservatively (PubMed)

A Case of Trapezium Avascular Necrosis Treated Conservatively Avascular necrosis (AVN) of the bones of the wrist most commonly involves the lunate followed by the proximal pole of the scaphoid and the capitate. Trapezium avascular necrosis is extremely rare with only two cases reported in the literature, both of which were treated surgically. In this article, we report a unique case of trapezium avascular necrosis treated conservatively.A 38-year-old man complaining of a 4-month history of mild (...) pain on the base of his right thumb. MRI scan was performed. The clinical presentation and the imaging findings indicated avascular osteonecrosis of the trapezium. The patient was treated with immobilization of the wrist joint for a period of six weeks. Three months later, the patient was free of symptoms and the MRI scan revealed a normal trapezium.AVN of trapezium is extremely rare. Our case shows that immobilization of an early stage avascular necrosis of the trapezium might be a treatment

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2017 Case reports in orthopedics

5. Developments in trapezium Replacements (PubMed)

Developments in trapezium Replacements 29090074 2018 11 13 2035-8237 9 3 2017 Sep 30 Orthopedic reviews Orthop Rev (Pavia) Developments in trapezium Replacements. 7196 10.4081/or.2017.7196 Eltorai Adam E M AEM Warren Alpert Medical School, Brown University, Providence, RI, USA. Han Alex A Warren Alpert Medical School, Brown University, Providence, RI, USA. eng Journal Article Review 2017 10 03 Italy Orthop Rev (Pavia) 101524779 2035-8164 PubMed Trapezium implants U.S. National Library (...) of Medicine 2017 04 22 2017 06 22 2017 11 2 6 0 2017 11 2 6 0 2017 11 2 6 1 epublish 29090074 10.4081/or.2017.7196 PMC5646426 Am J Orthop (Belle Mead NJ). 2015 Apr;44(4):E117-22 25844594 Hand Clin. 2013 Feb;29(1):37-55 23168027 Handchir Mikrochir Plast Chir. 2015 Feb;47(1):7-16 25706174 J Hand Surg Eur Vol. 2013 Oct;38(8):839-43 23221185 Chir Main. 2013 Apr;32(2):55-62 23561855 Clin Orthop Relat Res. 2014 Apr;472(4):1184-9 24214823 J Bone Joint Surg Am. 2003 Jan;85-A(1):1-3 12533564 Chir Main. 2013 Jun;32

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2017 Orthopedic reviews

6. Unilateral fusion of the scaphoid and the trapezium (PubMed)

Unilateral fusion of the scaphoid and the trapezium Fusion of the carpal bones is a rare anatomical abnormality, caused by a defect in the separation and cavitation during embryonic development. It has a prevalence of about 0.1% and most of the time, patients do not present with symptoms. Symptoms are usually caused by wear and tear of the ligaments attached to the fused carpal fragments. We present a case in which a woman aged 36 years experiences pain caused by a lunato-triquetral instability (...) which in turn is caused by a unilateral complete fusion of the scaphoid and the trapezium. A unilateral complete fusion of the scaphoid and trapezium has not been reported before.2016 BMJ Publishing Group Ltd.

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2016 BMJ case reports

7. Systematic review of studies of the anatomy of the human trapezium bone and thumb carpometacarpal joint

Systematic review of studies of the anatomy of the human trapezium bone and thumb carpometacarpal joint Print | PDF PROSPERO This information has been provided by the named contact for this review. CRD has accepted this information in good faith and registered the review in PROSPERO. CRD bears no responsibility or liability for the content of this registration record, any associated files or external websites. Email salutation (e.g. "Dr Smith" or "Joanne") for correspondence: Organisation web

2017 PROSPERO

8. Trapezium Bone

Trapezium Bone Trapezium Bone Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Trapezium Bone Trapezium Bone Aka: Trapezium Bone (...) , Greater Multangular Bone , Trapezium II. Anatomy Lewis (1918) Gray's Anatomy 20th ed (in at or ) Images: Related links to external sites (from Bing) These images are a random sampling from a Bing search on the term "Trapezium Bone." Click on the image (or right click) to open the source website in a new browser window. Related Studies (from Trip Database) Ontology: Bone structure of trapezium (C0223736) Definition (NCI_CDISC) A carpal bone on the thumb side of the hand that articulates with the 1st

2015 FP Notebook

9. Bone mineral density of the trapezium in osteoarthritic trapeziometacarpal joints. (PubMed)

Bone mineral density of the trapezium in osteoarthritic trapeziometacarpal joints. The aim of this study was to test the precision and reliability of measurements of the bone mineral density (BMD) of the trapezium in patients with osteoarthritic trapeziometacarpal joints using dual-energy X-ray absorptiometry scans and to assess whether there is an acceptable correlation between the BMD of the trapezium and that of the distal radius, for which normative data exist. We included 66 patients (52 (...) women, 14 men) diagnosed with Eaton-Glickel stage II-IV osteoarthritis and a mean age of 59 years (range 40-77) in a prospective study. We found good intra- and inter-observer agreement of BMD measurements. Reliability was also good in repeated measurements. There was an indication of an increase in BMD with progression in the Eaton-Glickel stage. There was only a moderate correlation between the BMD of the trapezium and that of the radius.

2012 Journal of Hand Surgery - European

10. Enhanced angiogenesis and increased bone turnover characterize bone marrow lesions in osteoarthritis at the base of the thumb (PubMed)

OA.Patients with OA at the base of the thumb, or the hip, underwent preoperative MRI to assess BMLs, and tetracycline labelling to determine bone turnover. Three groups were compared: trapezium bones removed by trapeziectomy from patients with thumb base OA (n = 20); femoral heads with (n = 24); and those without (n = 9) BMLs obtained from patients with hip OA who underwent total hip arthroplasty.All trapezium bones demonstrated MRI-defined BMLs. Compared with femoral heads without BMLs, the trapezia (...) Enhanced angiogenesis and increased bone turnover characterize bone marrow lesions in osteoarthritis at the base of the thumb Little is known about tissue changes underlying bone marrow lesions (BMLs) in non-weight-bearing joints with osteoarthritis (OA). Our aim was to characterize BMLs in OA of the hand using dynamic histomorphometry. We therefore quantified bone turnover and angiogenesis in subchondral bone at the base of the thumb, and compared the findings with control bone from hip

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2018 Bone & joint research

11. Primary cup fixation with different designs of trapeziometacarpal total joint trapezium components: a radiostereometric analysis in a pig bone model. (PubMed)

Primary cup fixation with different designs of trapeziometacarpal total joint trapezium components: a radiostereometric analysis in a pig bone model. High loosening rates of the trapezium components of trapeziometacarpal total joint prostheses have been reported. The purpose of this study was to compare the primary press fit fixation of two different, uncemented cup designs (MOTEC and Elektra) with the primary fixation of a cemented polyethylene cup (DLC) in a pig bone model. We did a push out (...) test to measure the maximal load strength of the implants and a low-pressure cyclic loading test combined with radiostereometric analysis to measure the micromotion of the implants. There was no significant difference in fixation strength between the two uncemented screw cup designs or between the two uncemented screw cups and the cemented polyethylene cup. However, we found that threading of the bone before insertion of the Electra screw cup weakens the primary fixation strength of the implant

2011 Journal of Hand Surgery - European

12. Porous Polyurethaneurea (Artelon) Joint Spacer Compared to Trapezium Resection and Ligament Reconstruction. (PubMed)

Porous Polyurethaneurea (Artelon) Joint Spacer Compared to Trapezium Resection and Ligament Reconstruction. To examine outcomes and complications of the porous polyurethaneurea (Artelon; Small Bone Innovations, Morrisville, PA) spacer compared to traditional surgical treatment of trapeziectomy with ligament reconstruction and tendon interposition (LRTI).A retrospective chart review was undertaken of patients with carpometacarpal (CMC) arthritis who had either placement of an Artelon spacer

2013 Journal of Hand Surgery - American

13. Trapezium Trabecular Morphology in Carpometacarpal Arthritis. (PubMed)

Trapezium Trabecular Morphology in Carpometacarpal Arthritis. In thumb carpometacarpal osteoarthritis, current evidence suggests that degenerative, bony remodeling primarily occurs within the trapezium. Nevertheless, the pathomechanics involved and the most common sites of wear remain controversial. Quantifying structural bone morphology characteristics with high-resolution computed tomography CT (micro-CT) infer regions of load transmission. Using micro-CT, we investigated whether predominant (...) trabecular patterns exist in arthritic versus normal trapeziums.We performed micro-CT analysis on 13 normal cadaveric trapeziums and 16 Eaton stage III to IV trapeziums. We computationally divided each specimen into 4 quadrants: volar-ulnar, volar-radial, dorsal-radial, and dorsal-ulnar. Measurements of trabecular bone morphologic parameters included bone volume ratio, connectivity, trabecular number, and trabecular thickness. Using analysis of variance with post hoc Bonferroni/Dunn correction, we

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2012 Journal of Hand Surgery - American

14. Gastric cancer initially presenting as bone metastasis: Two case reports and a literature review (PubMed)

Gastric cancer initially presenting as bone metastasis: Two case reports and a literature review Gastric cancer frequently spreads to the regional lymph nodes, liver and lungs following surgery or late in the clinical course. However, an initial clinical presentation of bone metastasis in gastric cancer patients is relatively rare. The current study presents two cases of gastric cancer diffusely metastasized to the spinal vertebrae and with a single metastasis to the trapezium, respectively (...) . The initial presentations were an increased alkaline phosphatase level without any symptoms associated with bone metastasis in the first case and a swelling in the right carpometacarpal joint of the thumb in the second case. These clinical manifestations are also extremely rare in gastric cancer with bone metastasis. The study emphasizes that a diagnosis of gastric cancer should be considered in patients with increased alkaline phosphatase without clinical symptoms or with a single bone metastasis.

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2018 Oncology letters

15. Changes in Local Bone Density in Early Thumb Carpometacarpal Joint Osteoarthritis. (PubMed)

that early CMC OA is associated with lower local bone density about the CMC joint as assessed by HU.We examined HU units from CT scans in 23 asymptomatic subjects and 91 patients with early CMC OA. The HU measurements were obtained within cancellous portions of the trapezium, capitate, first and third metacarpal bases, and distal radius. Linear regression models, with age and sex included as covariates, were used to assess the relationship between CMC OA and HU values at each anatomical site.Early OA (...) patients had significantly lower HU than asymptomatic subjects within the trapezium (mean, 377 HU vs 436 HU) and first metacarpal bases (265 HU vs 324 HU). No significant group differences were noted at the capitate, third metacarpal, or distal radius. Male sex and younger age were associated with significantly higher HU at all the anatomical sites, except the first metacarpal base, where age had no significant effect.Subjects presenting with early CMC OA had significantly lower bone density

2017 Journal of Hand Surgery - American

16. Massive trapezial metastasis from gastric adenocarcinoma resected and reconstructed with a vascularized scapular bone graft: A case report. (PubMed)

Massive trapezial metastasis from gastric adenocarcinoma resected and reconstructed with a vascularized scapular bone graft: A case report. Isolated metastasis to the hand bones is very rare. Only seven cases of metastasis to the trapezium have been reported. To the best of our knowledge, this is the first report of a single metastasis to the trapezium from a gastric adenocarcinoma.A 62-year-old man presented with pain and massive swelling in the right carpometacarpal joint of the thumb.The (...) patient was diagnosed with trapezial metastasis of advanced gastric adenocarcinoma.The patient underwent systemic chemotherapy with cisplatin and S-1, radiotherapy to the metastatic bone, and treatment with denosumab. One year later, the huge metastatic tumor was resected, and the hand was reconstructed using vascularized scapular bone.Eighteen months postoperatively, the patient was satisfied with the appearance of the reconstructed hand and was able to use his right thumb in activities of daily

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2017 Medicine

17. Excision of the Trapezium for Osteo-Arthritis of the Trapezio-Metacarpal Joint (PubMed)

Excision of the Trapezium for Osteo-Arthritis of the Trapezio-Metacarpal Joint 18857413 2008 10 16 2018 12 01 0032-5473 24 271 1948 May Postgraduate medical journal Postgrad Med J Excision of the trapezium for osteoarthritis of the trapezio-metacarpal joint. 262-4 GERVIS W H WH eng Journal Article England Postgrad Med J 0234135 0032-5473 OM Humans Joints Metacarpal Bones Osteoarthritis surgery Trapezium Bone surgery 4815:50p1 JOINTS/trapezio-metacarpal OS TRAPEZIUM/surgery OSTEOARTHRITIS

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1948 Postgraduate medical journal

18. Osteo-arthritis of the Trapezio-metacarpal Joint treated by Excision of the Trapezium (PubMed)

Osteo-arthritis of the Trapezio-metacarpal Joint treated by Excision of the Trapezium 19993599 2010 06 24 2018 12 01 0035-9157 40 9 1947 Jul Proceedings of the Royal Society of Medicine Proc. R. Soc. Med. Osteo-arthritis of the Trapezio-metacarpal Joint treated by Excision of the Trapezium. 492 Gervis W H WH eng Journal Article England Proc R Soc Med 7505890 0035-9157 OM Humans Metacarpal Bones Metacarpophalangeal Joint Osteoarthritis therapy Trapezium Bone Wrist surgery 4713:931g

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1947 Proceedings of the Royal Society of Medicine

19. Wrong-Bone Excision in Hand Surgery (PubMed)

excision of the trapezium. Respondents indicated that inadequate visualization, inadequate localization, and teaching of a resident or fellow contributed to the error. There was only 1 case of legal action.The results of our survey indicate that there exists a non-zero incidence of wrong-bone excision in hand surgery. The most common mistake is incorrect excision of the scaphoid during a planned trapeziectomy. Most surgeons feel that their patients were pleased with their outcome despite (...) Wrong-Bone Excision in Hand Surgery The incidence of wrong-bone excision in hand surgery is not known. The wrist offers a unique challenge in that a single surgical incision yields access to multiple potential surgical sites, thus rendering site marking less effective. Mistaken identification of structures in the wrist is a real and potentially troublesome phenomenon. This study is designed to evaluate the occurrence of wrong-bone excision and to identify any risk factors and preventative

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2016 Hand (New York, N.Y.)

20. Trapezoid Bone

, Trapezoid , Lesser Multangular Bone II. Anatomy Lewis (1918) Gray's Anatomy 20th ed (in at or ) Images: Related links to external sites (from Bing) These images are a random sampling from a Bing search on the term "Trapezoid Bone." Click on the image (or right click) to open the source website in a new browser window. Related Studies (from Trip Database) Ontology: Trapezoid bone structure (C0223741) Definition (NCI) A carpal bone located between the trapezium and capitate bones. Definition (NCI_CDISC (...) ) A carpal bone located between the trapezium and capitate bones. (NCI) Definition (MSH) A carpal bone which is located between the TRAPEZIUM BONE and the CAPITATE BONE. Concepts Body Part, Organ, or Organ Component ( T023 ) MSH SnomedCT 85575004 French Petit multiangulaire , Os trapézoïde , Trapézoïde Czech trapézovitá kost , kost mnohohranná menší , os trapezoideum Finnish Pieni monikulmaluu Russian KOST' TRAPETSIEVIDNAIA , КОСТЬ ТРАПЕЦИЕВИДНАЯ English Bone of trapezoid , Os trapezoideum , Bone

2018 FP Notebook

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