An assessment of proximal ulna dorsal angulation using digital radiographic images

A 25-year-old woman presented to the emergency room with a painful and swollen right forearm. She had just sustained an injury from an accident during which her arm was tightly wound by a rope as she was lowering a net from a fishing boat. Before being released, her arm was rigidly trapped in the rope for approximately ten minutes. Radiographs revealed anterior dislocation of the radial head that was accompanied by plastic deformation of the proximal ulna, manifested as a reversal of the proximal dorsal angulation of the ulna (PUDA); suggested a Monteggia equivalent fracture. With the patient under general anesthesia, we reduced the radial head by posterior compression at 90° of elbow flexion and at neutral rotation of the forearm. However, the reduction was easily lost and the elbow re-dislocated with even slight supination or extension of the arm. After the osteotomy of the ulnar deformity to restore the PUDA to normal, the reduction remained stable even with manipulation of the arm. We found that the patient could exercise a full range of motion without pain at the 3-month follow-up, and neither residual instability nor degenerative changes were observed at the final 3-year follow-up.

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Evaluation of the Proximal Ulna Dorsal Angulation for Ulnar Component Sizing in Elbow Prosthetic Reconstruction After Distal Humeral Resection of Tumor

JAAOS Global Research and Reviews ◽

10.5435/jaaosglobal-d-20-00062 ◽

2020 ◽

Vol 4 (5) ◽

pp. e20.00062

Author(s):

Caleb M. Yeung ◽

Jonathan Lans ◽

Joseph B. Kuechle ◽

Zachary Wright ◽

Connie Y. Chang ◽

...

Keyword(s):

Proximal Ulna ◽

Prosthetic Reconstruction ◽

Component Sizing ◽

Dorsal Angulation

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Injuries to the Coronoid Process of the Ulna with Involvement of the Lesser Sigmoid Notch

Zeitschrift für Orthopädie und Unfallchirurgie ◽

10.1055/a-1263-1742 ◽

2020 ◽

Author(s):

Valentin Rausch ◽

Sina Neugebauer ◽

Tim Leschinger ◽

Lars Müller ◽

Kilian Wegmann ◽

...

Keyword(s):

Fragment Size ◽

Coronoid Process ◽

Annular Ligament ◽

Concomitant Injuries ◽

Proximal Ulna ◽

Sigmoid Notch ◽

Coronoid Fractures ◽

The Mean ◽

The Stability ◽

Arthritic Changes

Abstract Introduction This study aimed to describe the involvement of the lesser sigmoid notch in fractures to the coronoid process. We hypothesized that injuries to the lateral aspect of the coronoid process regularly involve the annular ligament insertion at the anterior lesser sigmoid notch. Material and Methods Patients treated for a coronoid process fracture at our institution between 06/2011 and 07/2018 were included. We excluded patients < 18 years, patients with arthritic changes or previous operative treatment to the elbow, and patients with concomitant injuries to the proximal ulna. In patients with involvement of the lesser sigmoid notch, the coronoid height and fragment size (anteroposterior, mediolateral, and craniocaudal) were measured. Results Seventy-two patients (mean age: 47 years ± 17.6) could be included in the study. Twenty-one patients (29.2%) had a fracture involving the lateral sigmoid notch. The mean anteroposterior fragment length was 7 ± 1.6 mm. The fragment affected a mean of 43 ± 10.8% of the coronoid height. The mean mediolateral size of the fragment was 10 ± 5.0 mm, and the mean cranio-caudal size was 7 ± 2.7 mm. Conclusion Coronoid fractures regularly include the lesser sigmoid notch. These injuries possibly affect the anterior annular ligament insertion which is important for the stability of the proximal radioulnar joint and varus stability of the elbow.

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Dynamic Proximal Ulnar Osteotomy for the Treatment of Ununited Anconeal Process in 17 Dogs

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0038-1632614 ◽

1998 ◽

Vol 11 (02) ◽

pp. 76-79 ◽

Cited By ~ 14

Author(s):

B. M. Turner ◽

R. H. Abercromby ◽

J. Innes ◽

W. M. McKee ◽

M. G. Ness

Keyword(s):

Clinical Outcome ◽

Prospective Study ◽

Patient Population ◽

Clinical Results ◽

Radiographic Evaluation ◽

Proximal Ulna ◽

Ulnar Osteotomy ◽

A Prospective Study

SummaryA prospective study was made of 17 dogs with ununited anconeal process treated by osteotomy of the proximal ulna. The effect of the surgery on lameness was evaluated subjectively and the elbows were assessed radiographically for evidence of anconeal fusion and healing of the osteotomy. Whilst clinical outcome was generally good and complications infrequent, relatively few cases achieved anconeal fusion. These results do not compare well with the results of a previous study but this disparity may be due in part to differences in patient population and radiographic evaluation.Further work is required to establish how best to achieve predictable anconeal fusion.Proximal ulnar osteotomy was used to treat 17 dogs with ununited anconeal process. Clinical results were good but anconeal fusion was not achieved consistently. Further work is needed to determine how best to achieve predictable anconeal fusion.

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Radiographic Prevalence of Osteochondrosis in Yearling Feral Horses

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0038-1632481 ◽

1999 ◽

Vol 12 (03) ◽

pp. 151-155 ◽

Cited By ~ 19

Author(s):

L. W. Valentino ◽

E. M. Gaughan ◽

D. R. Biller ◽

R. H. Raub ◽

J. D. Lillich

Keyword(s):

Subchondral Bone ◽

Management Practices ◽

Articular Surface ◽

Radiographic Images ◽

Feral Horses ◽

Metacarpophalangeal Joints ◽

Genetic Base ◽

Domestic Horses ◽

The Difference ◽

Metatarsophalangeal Joints

The purpose of the study is to document the prevalence of articular surface osteochondrosis lesions in feral horses. Eighty yearling feral horses were used. Radiographic images of the left stifle, both tarsocrural, metatarsophalangeal, metacarpophalangeal joints were taken. Radiographs were examined for the presence of osteochondral fragmentation and abnormal outline of subchondral bone suggestive of osteochondrosis. The prevalence of each lesion was calculated for each joint as well as for overall prevalence within the group, the latter being 6.25%. Typical osteochondrosis lesions were found within the tarsocrural and metatarsophalangeal joints. Based on the difference in prevalence of osteochondrosis between feral and certain domestic horses, management practices and perhaps genetic base may have a greater influence on the development of the disease in horses than trauma alone.

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STUDY OF HOMOGENEITY, POROSITY AND INTERNAL DEFECTS IN AERATED AND EPS AGGREGATE POLY BRICKS USING NEUTRON RADIOGRAPHY TECHNIQUE

JOURNAL OF ADVANCES IN PHYSICS ◽

10.24297/jap.v7i2.1699 ◽

2015 ◽

Vol 7 (2) ◽

pp. 1428-1439

Author(s):

Khurshed Alam ◽

Md. Sayeedur Rahman ◽

Md. Mostafizur Rahman ◽

S. M. Azaharul Islam

Keyword(s):

Optical Density ◽

Neutron Radiography ◽

Density Variation ◽

Expanded Polystyrene ◽

Elemental Distribution ◽

Non Destructive Testing ◽

Internal Defects ◽

Destructive Testing ◽

Radiographic Images ◽

Non Destructive

A powerful non-destructive testing (NDT) technique is adopted to study the internal defects and elemental distribution/homogeneity and porosity of aerated brick and EPS aggregate poly brick samples. In the present study the internal defects like homogeneity, porosity, elemental distribution, EPS aggregate and aerator distributor in the test samples have been observed by the measurement of gray value/optical density of the neutron radiographic images of these samples. From this measurement it is found that the neutron intensity/optical density variation with the pixel distance of the AOI of the NR images in both expanded polystyrene (EPS) aggregate poly brick and aerated brick samples comply almost same in nature with respect to the whole AOI but individually each AOI shows different nature from one AOI to another and it confirms that the elemental distribution within a AOI is almost homogeneous. Finally it was concluded that homogeneity, elemental distribution in the EPS aggregate poly brick sample is better than that of the aerated brick sample.Â

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