scholarly journals Imaging study of coronal structural matching of the distal radius in normal adults

2019 ◽  
Author(s):  
Xin Zhang ◽  
Feng Yuan ◽  
Yong Yin ◽  
Jian Fan
Keyword(s):  
Distal Radius ◽  
Normal Population ◽  
Joint Space ◽  
Distal Radioulnar Joint ◽  
Medial Wall ◽  
Axial Line ◽  
Radioulnar Joint ◽  
Anatomical Basis ◽  
Normal Adults ◽  
Structural Matching

Abstract Background As an important anatomical basis, coronal structural position matching of the distal radius has long been lacking in terms of a quantitative understanding, and such matching is correlated with the postoperative functional recovery of patients with distal radius fracture. The purpose of this study was to explore the degree of coronal structural matching of the distal radius in a normal population and to improve the detailed anatomical knowledge of the distal radius.Methods Thin-film CT images of the wrist joint in 80 normal adults were randomly selected, and detailed parameters were recorded. The reconstructed 3D data were analysed using 3-matic research software, and the coronal structural matching of the distal radius was studied from two aspects: 1) self-matching of the distal radius; and 2) matching between the distal radius and ulna (i.e., the joint space of the distal radioulnar joint). Specific research methods: 1) The relative position of the medial wall of the distal radius with respect to the lunate was determined as the percentage (%) of the vertical distance from the medial wall of the radius to the most prominent ulnar point of the lunate in the corresponding plane from the ulna to the radius. 2) A total of 9 sets of data were collected for evaluating the palmar lateral spacing, median spacing, and dorsal lateral spacing at the distal, middle, and proximal levels of the radius.Results Data of coronal bone structural matching of distal radius in 80 normal adults were obtained. The joint space of the radioulnar joint on the middle plane was 0.88 mm ± 0.59 mm. The structural compatibility of the distal radius itself, that is, matching of the axial line of the medial wall of the distal radius relative to the lunate, was 45.0%±16.2%. Conclusions There was no significant correlation between distal radius self-matching and matching of the distal radioulnar joint in the normal population. The degree of coronal self-matching of the distal radius was more accurate by 3D reconstruction than traditional X-ray measurement, and the normal range was 45.0±16.2%.

scholarly journals Imaging study of coronal structural matching of the distal radius in normal adults

2020 ◽  
Author(s):  
Xin Zhang ◽  
Feng Yuan ◽  
Yong Yin ◽  
Jian Fan
Keyword(s):  
Thin Film ◽  
Distal Radius Fracture ◽  
Distal Radius ◽  
Normal Population ◽  
Statistical Significance ◽  
Medial Wall ◽  
Radius Fracture ◽  
Radioulnar Joint ◽  
Normal Adults ◽  
Structural Matching

Abstract Background: As an important anatomical basis, coronal structural position matching of the distal radius has long been lacking in terms of a quantitative understanding, and such matching is correlated with the postoperative functional recovery of patients with distal radius fracture. The purpose of this study was to explore the degree of coronal structural matching of the distal radius in a normal population and to improve the detailed anatomical knowledge of the distal radius. Methods: The reconstructed 3D data were analysed using 3-matic research software from thin-film CT images of 80 normal adults, and the coronal structural matching of the distal radius was studied from two aspects: 1) self-matching of the distal radius; and 2) matching between the distal radius and ulna (i.e., the joint space of the distal radioulnar joint). Specific research methods: 1) The relative position of the medial wall of the distal radius with respect to the lunate was determined as the percentage (%) of the vertical distance from the medial wall of the radius to the most prominent ulnar point of the lunate in the corresponding plane from the ulna to the radius. 2) A total of 9 sets of data were collected for evaluating the palmar lateral spacing, median spacing, and dorsal lateral spacing at the distal, middle, and proximal levels of the radius. Results: In the study, 9 sets of data were obtained. And the data of self-matching of the coronal structural of distal radius was also obtained, was 45.0%±16.2%. The P values in the above data were all greater than 0.05, showing no statistical significance. Finally, data of coronal bone structural matching of distal radius in 80 normal adults were obtained. Conclusions: Our study refines the anatomical data of the degree of coronal bone structural matching of the distal radius in a normal population. To explore the relationship between coronal alignment and function in cases of distal radius fracture, a standardized approach was established. Thin- film CT may help diagnose patients with dysplasia around the lunate and radioulnar joint that is difficult to diagnose on MRI.

scholarly journals Imaging study of coronal structural matching of the distal radius in normal adults

2020 ◽  
Author(s):  
Xin Zhang ◽  
Feng Yuan ◽  
Yong Yin ◽  
Jian Fan
Keyword(s):  
Thin Film ◽  
Distal Radius Fracture ◽  
Distal Radius ◽  
Normal Population ◽  
Statistical Significance ◽  
Medial Wall ◽  
Radius Fracture ◽  
Radioulnar Joint ◽  
Normal Adults ◽  
Structural Matching

Abstract Background: As an important anatomical basis, coronal structural position matching of the distal radius has long been lacking in terms of a quantitative understanding, and such matching is correlated with the postoperative functional recovery of patients with distal radius fracture. The purpose of this study was to explore the degree of coronal structural matching of the distal radius in a normal population and to improve the detailed anatomical knowledge of the distal radius.Methods: The reconstructed 3D data were analysed using 3-matic research software from thin-film CT images of 80 normal adults, and the coronal structural matching of the distal radius was studied from two aspects: 1) self-matching of the distal radius; and 2) matching between the distal radius and ulna (i.e., the joint space of the distal radioulnar joint). Specific research methods: 1) The relative position of the medial wall of the distal radius with respect to the lunate was determined as the percentage (%) of the vertical distance from the medial wall of the radius to the most prominent ulnar point of the lunate in the corresponding plane from the ulna to the radius. 2) A total of 9 sets of data were collected for evaluating the palmar lateral spacing, median spacing, and dorsal lateral spacing at the distal, middle, and proximal levels of the radius.Results: In the study, 9 sets of data were obtained. And the data of self-matching of the coronal structural of distal radius was also obtained, was 45.0%±16.2%. The P values in the above data were all greater than 0.05, showing no statistical significance. Finally, data of coronal bone structural matching of distal radius in 80 normal adults were obtained. Conclusions: Our study refines the anatomical data of the degree of coronal bone structural matching of the distal radius in a normal population. To explore the relationship between coronal alignment and function in cases of distal radius fracture, a standardized approach was established. Thin- film CT may help diagnose patients with dysplasia around the lunate and radioulnar joint that is difficult to diagnose on MRI.

scholarly journals Imaging study of coronal structural matching of the distal radius in normal adults

2020 ◽  
Author(s):  
Xin Zhang ◽  
Feng Yuan ◽  
Yong Yin ◽  
Jian Fan
Keyword(s):  
Thin Film ◽  
Distal Radius Fracture ◽  
Distal Radius ◽  
Normal Population ◽  
Statistical Significance ◽  
Medial Wall ◽  
Radius Fracture ◽  
Radioulnar Joint ◽  
Normal Adults ◽  
Structural Matching

Abstract Background: As an important anatomical basis, coronal structural position matching of the distal radius has long been lacking in terms of a quantitative understanding, and such matching is correlated with the postoperative functional recovery of patients with distal radius fracture. The purpose of this study was to explore the degree of coronal structural matching of the distal radius in a normal population and to improve the detailed anatomical knowledge of the distal radius. Methods: The reconstructed 3D data were analysed using 3-matic research software from thin-film CT images of 80 normal adults, and the coronal structural matching of the distal radius was studied from two aspects: 1) self-matching of the distal radius; and 2) matching between the distal radius and ulna (i.e., the joint space of the distal radioulnar joint). Specific research methods: 1) The relative position of the medial wall of the distal radius with respect to the lunate was determined as the percentage (%) of the vertical distance from the medial wall of the radius to the most prominent ulnar point of the lunate in the corresponding plane from the ulna to the radius. 2) A total of 9 sets of data were collected for evaluating the palmar lateral spacing, median spacing, and dorsal lateral spacing at the distal, middle, and proximal levels of the radius. Results: In the study, 9 sets of data were obtained. And the data of self-matching of the coronal structural of distal radius was also obtained, was 45.0%±16.2%. The P values in the above data were all greater than 0.05, showing no statistical significance. Finally, data of coronal bone structural matching of distal radius in 80 normal adults were obtained. Conclusions: Our study refines the anatomical data of the degree of coronal bone structural matching of the distal radius in a normal population. To explore the relationship between coronal alignment and function in cases of distal radius fracture, a standardized approach was established. Thin- film CT may help diagnose patients with dysplasia around the lunate and radioulnar joint that is difficult to diagnose on MRI.

In vivo measurement of distal radioulnar translation following distal radius fracture

2021 ◽  
pp. 175319342110166
Author(s):  
Grey E. B. Giddins ◽  
Greg T. Pickering
Keyword(s):  
Distal Radius Fracture ◽  
Distal Radius ◽  
Distal Radioulnar Joint ◽  
Wrist Fracture ◽  
Radius Fracture ◽  
Normal Range ◽  
Radioulnar Joint ◽  
In Vivo Measurement ◽  
Objectively Measured

The incidence of distal radioulnar joint instability following a distal radius fracture is estimated around one in three based upon clinical examination. Using a validated rig, we objectively measured distal radioulnar joint translation in vivo following distal radius fracture. Dorsopalmar translation of the distal radioulnar joint was measured in 50 adults with previous distal radius fractures. Measurements were compared with the uninjured wrist and against a database of previous measurements within healthy and clinically lax populations. Translation at the distal radioulnar joint was greater in injured wrists at 12.2 mm (range 10–15, SD 1.2) than the uninjured wrists at 6.4 (range 4–9, SD 0.8) ( p < 0.001) and was always outside the established normal range. There was no statistically significant link between translation and the severity of the injury. Instability appears almost inevitable following a distal radius (wrist) fracture, albeit subclinical in the vast majority.

scholarly journals The Effect of Dorsal Angulation on Distal Radioulnar Joint Arthrokinematics Measured Using Intercartilage Distance

2018 ◽  
Vol 08 (01) ◽  
pp. 010-017
Author(s):  
Emily Lalone ◽  
Masao Nishiwaki ◽  
Ryan Willing ◽  
James Johnson ◽  
Graham King ◽  
...  
Keyword(s):  
Distal Radius ◽  
Contact Area ◽  
Three Dimensional ◽  
Distal Radioulnar Joint ◽  
Radioulnar Joint ◽  
Motion Data ◽  
Contact Patterns ◽  
Dorsal Angulation ◽  
Triangular Fibrocartilage

Background The effects of dorsal angulation deformity on in vitro distal radioulnar joint (DRUJ) contact patterns are not well understood. Purpose The purpose of this study was to utilize intercartilage distance to examine the effects of forearm rotation angle, distal radius deformity, and triangular fibrocartilage complex (TFCC) sectioning on DRUJ contact area and centroid position. Methods An adjustable implant permitted the creation of simulated intact state and dorsal angulation deformities of 10, 20, and 30 degrees. Three-dimensional cartilage models of the distal radius and ulna were created using computed tomography data. Using optically tracked motion data, the relative position of the cartilage models was rendered and used to measure DRUJ cartilage contact mechanics. Results DRUJ contact area was highest between 10 and 30 degrees of supination. TFCC sectioning caused a significant decrease in contact area with a mean reduction of 11 ± 7 mm2 between the TFCC intact and sectioned conditions across all variables. The position of the contact centroid moved volarly and proximally with supination for all variables. Deformity had a significant effect on the location of the contact centroid along the volar–dorsal plane. Conclusion Contact area in the DRUJ was maximal between 10 and 30 degrees of supination during the conditions tested. There was a significant effect of simulated TFCC rupture on contact area in the DRUJ, with a mean contact reduction of 11 ± 7 mm2 after sectioning. Increasing dorsal angulation caused the contact centroid to move progressively more volar in the sigmoid notch.

The significance of distal radioulnar joint injury in distal radius fracture

2002 ◽  
Vol 15 (2) ◽  
pp. 251
Author(s):  
Jin Woo Kwon ◽  
Sung Ho Shin ◽  
Won Ho Jo ◽  
Dong Hyun Kim
Keyword(s):  
Distal Radius Fracture ◽  
Distal Radius ◽  
Distal Radioulnar Joint ◽  
Radius Fracture ◽  
Joint Injury ◽  
Radioulnar Joint

scholarly journals Radius distraction could contribute to long-term stability for treating distal radioulnar joint instability during volar plating of distal radius fracture: a retrospective case series study

2021 ◽  
Author(s):  
Cheng-Yu Yin ◽  
Hui-Kuang Huang ◽  
Duretti Fufa ◽  
Jung-Pan Wang
Keyword(s):  
Surgical Technique ◽  
Distal Radius Fracture ◽  
Distal Radius ◽  
Case Series ◽  
Distal Radioulnar Joint ◽  
Radius Fracture ◽  
Radioulnar Joint ◽  
Druj Instability

Abstract BackgroundThe surgical technique of radius distraction for stabilization of distal radioulnar joint (DRUJ) if intraoperative DRUJ instability was found after the fixation of distal radius fracture has been previously described, but this surgical technique lacks clinical and radiographic effect in minimal 3 years follow-up. We therefore evaluated the clinical outcome and radiographic results of radius distraction in minimal 3 years follow-up.MethodsWe reviewed the case series of distal radius fracture with concomitant DRUJ instability receiving radius distraction from the senior author over a 5-year period (January 1st, 2013 to June 30th, 2017) retrospectively, and the evaluation of clinical and radiographic outcomes was performed at clinic as long-term follow-up; a total 34 patients had been evaluated.ResultsAt minimal post-operative 36 months follow-up, all cases demonstrated acceptable wrist range of motion with stable DRUJs and low NRS of wrist pain (0.6, SD 0.7) and DASH score (mean 9.1, SD 6.2), and there were no cases suffering from nonunion of distal radius. The mean ulnar variance of injured wrist and uninjured wrist were − 1.2 mm and 0.2mm, respectively (SD 1.0 and 0.6) with significant statistical difference.ConclusionsRadius distraction during volar fixation of distal radius fracture should be consider if DRUJ instability was found by the radioulnar stress test intraoperatively, and the long-term DRUJ stability could be achieved by maintenance of normal-to-negative ulnar variance, with decreased wrist pain and satisfactory function outcome.Level of EvidenceTherapeutic Level IV

Effect of decrease in radial inclination of distal radius fractures on distal radioulnar joint stability: a biomechanical study

2018 ◽  
Vol 43 (9) ◽  
pp. 967-973 ◽  
Author(s):  
Yuki Bessho ◽  
Toshiyasu Nakamura ◽  
Masao Nishiwaki ◽  
Takeo Nagura ◽  
Morio Matsumoto ◽  
...  
Keyword(s):  
Distal Radius ◽  
Joint Stiffness ◽  
Distal Radioulnar Joint ◽  
Biomechanical Study ◽  
Joint Stability ◽  
Radius Fractures ◽  
Radioulnar Joint ◽  
Radial Inclination ◽  
Fresh Frozen ◽  
The Relationship

We investigated the relationship between the radial inclination of the distal radius and distal radioulnar joint stability. Six fresh-frozen upper extremities were used. Radial inclination was decreased by 10° and 20° and increased by 10° from the original radial inclination. Distal radioulnar joint stiffness was assessed with an intact radioulnar ligament and after partial and then complete sectioning of the radioulnar ligament. Radial angulation deformities significantly increased distal radioulnar joint stiffness when the radioulnar ligament is totally or partially attached to the ulnar fovea. After complete sectioning of the radioulnar ligament, distal radioulnar joint stiffness decreased significantly; additional radial angulation deformity slightly increased distal radioulnar joint stiffness, but the distal radioulnar joint never recovered to the original stiffness. Based on the results, radial angulation deformities of the distal radius should be corrected within 10° when the radioulnar ligament is intact, to reduce the risk of symptomatic distal radioulnar joint instability.

Distal Radioulnar Joint Osteoarthritis: An Update on Treatment Options

2021 ◽  
Author(s):  
Brian M. Katt ◽  
Amr Tawfik ◽  
Nicholas Zingas ◽  
Francis Sirch ◽  
Pedro K. Beredjiklian ◽  
...  
Keyword(s):  
Septic Arthritis ◽  
Distal Radius ◽  
Joint Instability ◽  
Conservative Therapy ◽  
Treatment Options ◽  
Distal Radioulnar Joint ◽  
Surgical Approaches ◽  
Distal Ulna ◽  
Load Bearing ◽  
Radioulnar Joint

AbstractThe distal radioulnar joint (DRUJ), the articulation between the sigmoid notch of the radius and the distal ulna, plays a pivotal role in stability and load bearing and allows for pronation and supination of the forearm. Osteoarthritis (OA) of the DRUJ commonly occurs due to distal radius trauma but may also be the result of conditions such as joint instability, septic arthritis, or primary OA. It is initially managed with conservative therapy, but surgery is often considered when nonoperative methods fail. The surgical approaches available to treat this pathology have grown over the years. The procedures have generally favorable outcomes, each with their own unique complications and considerations. This paper comprises a review of the outcomes and complications for the different procedures commonly used to surgically treat DRUJ OA.

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