Screw Length Optimization of a Volar Locking Plate Using Three Dimensional Preoperative Planning in Distal Radius Fractures

2018 ◽  
Vol 23 (04) ◽  
pp. 520-527 ◽  
Author(s):  
Yasukazu Totoki ◽  
Yuichi Yoshii ◽  
Takuya Kusakabe ◽  
Kenichi Akita ◽  
Tomoo Ishii
Keyword(s):  
Distal Radius Fracture ◽  
Distal Radius ◽  
Preoperative Planning ◽  
Three Dimensional ◽  
Distal Radius Fractures ◽  
Control Group ◽  
3D Image ◽  
Radius Fractures ◽  
Screw Length ◽  
Operative Planning

Background: A three-dimensional (3D) digital pre-operative planning system for the osteosynthesis of distal radius fracture was developed. The objective of this study was to evaluate screw choices for three-dimensional (3D) digital pre-operative planning of osteosynthesis of distal radius fractures and to compare with the screw choices for the conventional method.Methods: Distal radius fracture patients who underwent osteosynthesis using volar locking plates were evaluated. Thirty wrists in the plan group utilized 3D preoperative planning, and nineteen wrists in the control group utilized conventional preoperative assessment. In the plan group, the 3D preoperative planning was performed prior to surgery. The reduction was simulated with 3D image, and the implant choice/placement also simulated on the 3D image. In the control group, standard preoperative planning was performed using posterior-anterior and lateral view radiographs, and CT scan. After the planning, osteosynthesis was performed. During the surgery, the operator performed the reduction and the placement of the plate while comparing images between the pre-operative plan and fluoroscopy. The distal screw lengths and the anteroposterior diameter of the radius along the axis of the distal screws were measured. The ratios of the screw length and radius diameter were evaluated. The screw/radius ratios within the range of 0.75–1.00 were considered appropriate. The screw choices less than 0.75, or greater than 1.00 were considered inappropriate. The rate of appropriate screw choices were compared between plan and control groups.Results: The results of appropriate screw choices were 86.1% and 74.8% in the plan group and the control group, respectively. The inappropriate screw choices were 14.0% and 25.2% in the plan group and the control group, respectively. The three-dimensional planning significantly increased appropriate screw choices compared to the conventional planning (p < 0.05).Conclusions: Three-dimensional digital preoperative planning is useful for the optimization of screw lengths in osteosynthesis of distal radius fractures.

scholarly journals 3D virtual pre-operative planning may reduce the incidence of dorsal screw penetration in volar plating of intra-articular distal radius fractures

2021 ◽  
Author(s):  
Jasper Prijs ◽  
Bram Schoolmeesters ◽  
Denise Eygendaal ◽  
Jean-Paul P. M. de Vries ◽  
Paul C. Jutte ◽  
...  
Keyword(s):  
Diagnostic Imaging ◽  
Distal Radius ◽  
Three Dimensional ◽  
Imaging Study ◽  
Distal Radius Fractures ◽  
Volar Plating ◽  
Radius Fractures ◽  
Operative Planning ◽  
Screw Penetration ◽  
Diagnostic Imaging Study

Abstract Purpose To evaluate the effect of three-dimensional virtual pre-operative planning (3DVP) on the incidence of dorsal screw penetration after volar plating of distal radius fractures. Methods A cross-sectional diagnostic imaging study was performed. Twenty out of 50 patients were randomly selected from our index prospective cohort (IPC): a prior study evaluating dorsal tangential views (DTVs) in reducing dorsal screw penetration in internal fixation of intra-articular distal radius fractures using post-operative CT scans to quantify screw protrusion. Pre-operative CTs from this cohort were now used for 3DVP by three experienced orthopaedic trauma surgeons (supplementary video). 3DVP was compared with the corresponding post-operative CT for assessing screw lengths and incidence of dorsal penetration. The Wilcoxon Signed Ranks test was used to compare screw lengths and the Fishers’ exact for incidence of penetration. Results Three surgeons performed 3DVP for 20 distal radius fractures and virtually applied 60 volar plates and 273 screws. Median screw length was shorter in the 3DVP when compared to IPC: 18 mm (range, 12–22) versus 20 mm (range, 14–26) (p < 0.001). The number of penetrating screws was 5% (13/273 screws) in the 3DVP group compared to 11% (10/91 screws) in the IPC (p = 0.047). Corresponding to a reduction in incidence of at least one dorsally penetrating screw in 40% of patients in the IPC group, to 18% in the 3DVP group (p = 0.069). Conclusion Three-Dimensional Virtual Pre-Operative Planning (3DVP) may reduce the incidence of dorsally penetrating screws in patients treated with volar plating for intra-articular distal radius fractures. Level of evidence II, diagnostic imaging study.

scholarly journals Utility of an image fusion system for 3D preoperative planning and fluoroscopy in the osteosynthesis of distal radius fractures

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Yuichi Yoshii ◽  
Yasukazu Totoki ◽  
Satoshi Sashida ◽  
Shinsuke Sakai ◽  
Tomoo Ishii
Keyword(s):  
Image Fusion ◽  
Distal Radius ◽  
Preoperative Planning ◽  
Distal Radius Fractures ◽  
Joint Surface ◽  
Orthopedic Procedures ◽  
Control Group ◽  
Fusion System ◽  
Radius Fractures ◽  
Distal Screw

Abstract Background Recently, computerized virtual surgery planning has been increasingly applied in various orthopedic procedures. In this study, we developed an image fusion system for 3D preoperative planning and fluoroscopy for the osteosynthesis. To assess the utility of image fusion system, we evaluated the reproducibility of preoperative planning in the osteosynthesis of distal radius fractures with using the image fusion system, and compared with the reproducibility of the patients without using the image fusion system. Methods Forty-two wrists of 42 distal radius fracture patients who underwent osteosynthesis using volar locking plates were evaluated. The patients were divided into two groups. Image fusion group utilized three-dimensional (3D) preoperative planning and image fusion system. Control group utilized only 3D preoperative planning. In both groups, 3D preoperative planning was performed in order to determine reduction, placement, and choice of implants. In the image fusion group, the outline of planned image was displayed on a monitor overlapping with fluoroscopy images during surgery. Reductions were evaluated by volar tilt and radial inclination of 3D images. Plate positions were evaluated with distance to joint surface, plate center axis position, and inclination relative to the radius axis. Screw choices were recorded for the plan and actual choices for each screw hole. Differences in the parameters between pre- and postoperative images were evaluated. Differences in reduction shape, plate positions, and screw choices were compared between groups. Results The differences in the distance from plate to joint surface were significantly smaller in the image fusion group compared to the control group (P < 0.01). The differences in the distal screw choices were significantly smaller in the image fusion group compared to the control group (P < 0.01). Conclusions The image fusion system was useful to reproduce the planned plate position and distal screw choices in the osteosynthesis of distal radius fractures. Trial registration ClinicalTrials.gov, NCT03764501

scholarly journals Three-dimensional evaluations of preoperative planning reproducibility for the osteosynthesis of distal radius fractures

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Yuichi Yoshii ◽  
Takeshi Ogawa ◽  
Atsuo Shigi ◽  
Kunihiro Oka ◽  
Tsuyoshi Murase ◽  
...  
Keyword(s):  
Distal Radius ◽  
Reference Point ◽  
Preoperative Planning ◽  
Three Dimensional ◽  
Reference Points ◽  
Distal Radius Fractures ◽  
Radius Fractures ◽  
3D Images ◽  
Radial Inclination ◽  
Preoperative Plan

Abstract Background Three-dimensional preoperative planning was applied for the osteosynthesis of distal radius fractures. The objective of this study was to evaluate the reproducibility of three-dimensional preoperative planning for the osteosynthesis of distal radius fractures with three-dimensional reference points. Methods Sixty-three wrists of 63 distal radius fracture patients who underwent osteosynthesis with three-dimensional preoperative planning were evaluated. After taking preoperative CT scans of the injured wrists, 3D images of the distal radius were created. Fracture reduction, implants choices, and placements simulation were performed based on the 3D images. One month after the surgery, postoperative CT images were taken. The reproducibility was evaluated with preoperative plan and postoperative 3D images. The images were compared with the three-dimensional coordinates of radial styloid process, volar and dorsal edges of sigmoid notch, and the barycentric coordinates of the three reference points. The reproducibility of the preoperative plan was evaluated by the distance of the coordinates between the plan and postoperative images for the reference points. The reproducibility of radial inclination and volar tilt on three-dimensional images were evaluated by intra-class correlation coefficient (ICC). Results The distances between the preoperative plan and the postoperative reduction for each reference point were (1) 2.1±1.3 mm, (2) 1.9±1.2 mm, and (3) 1.9±1.2 mm, respectively. The distance between the preoperative plan and postoperative reduction for the barycentric coordinate was 1.3±0.8 mm. ICCs were 0.54 and 0.54 for the volar tilt and radial inclination, respectively (P<0.01). Conclusions Three-dimensional preoperative planning for the osteosynthesis of distal radius fracture was reproducible with an error of about 2 mm for each reference point and the correlations of reduction shapes were moderate. The analysis method and reference points may be helpful to understand the accuracy of reductions for the three-dimensional preoperative planning in the osteosynthesis of distal radius fractures. Trial registration Registered as NCT02909647 at ClinicalTrials.gov

A Comparison of Radiographic Outcomes between 3D Preoperative Planning and Conventional Planning in the Osteosynthesis of Distal Radius Fractures

2019 ◽  
Vol 24 (03) ◽  
pp. 303-310 ◽  
Author(s):  
Yuichi Yoshii ◽  
Yasukazu Totoki ◽  
Wen-lin Tung ◽  
Kenichi Akita ◽  
Tomoo Ishii
Keyword(s):  
Distal Radius ◽  
Preoperative Planning ◽  
Distal Radius Fractures ◽  
Control Group ◽  
Radius Fractures ◽  
Correction Loss ◽  
Radiographic Outcomes ◽  
Radiographic Parameters ◽  
Healthy Side ◽  
And Control

Background: To assess the usefulness of three-dimensional (3D) digital pre-operative planning, we compared the radiographic parameters of the distal radius from 3D planning and conventional planning after osteosynthesis of distal radius fractures. We hypothesized that the use of 3D digital planning may improve radiographic outcomes for reduction and decrease the risk of correction loss.Methods: Sixty wrists of 60 distal radius fracture patients were randomly divided into two groups according to the order of hospital visits. Thirty wrists were treated with 3D preoperative planning as the plan group. Another thirty wrists were treated with conventional preoperative planning as the control group. Both groups were treated with volar locking plates. In the plan group, 3D digital preoperative planning and a surgical simulation were performed in order to determine the reduction and placement of the implants in addition to the plate/screw size prior to surgery. In the control group, conventional preoperative planning was performed. Ulnar variance, volar tilt, and radial inclination were measured at one week, three and six months after surgery. Difference of the measurement of radiographic parameters between operated and healthy side wrists were compared between plan and control groups at one week after surgery. Loss of corrections for radiographic parameters were compared between plan and control groups.Results: The differences between the operated and healthy side wrists were significantly smaller in the plan group compared to the control group for the volar tilt and radial inclination (p < 0.05).The loss of corrections for ulnar variance and volar tilt were significantly smaller in the plan group compared to the control group at six months after surgery (p < 0.05).Conclusions: 3D preoperative planning offers better reduction accuracy and reduces correction loss in the osteosynthesis of distal radius fractures.

scholarly journals A modified intrafocal pinning technique with three‐dimensional planning to facilitate volar plating in dorsally comminuted AO/OTA C2 and C3 distal radius fractures

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Xue-yang Gui ◽  
Hong-fei Shi ◽  
Jin Xiong ◽  
Yi-xin Chen ◽  
Jun-fei Wang ◽  
...  
Keyword(s):  
Distal Radius ◽  
Locking Plate ◽  
Preoperative Planning ◽  
Three Dimensional ◽  
Distal Radius Fractures ◽  
Dash Score ◽  
Volar Plating ◽  
Radius Fractures ◽  
Radial Inclination

Abstract Backgrounds Theaim of this study was to assess the efficacy of a modified intrafocal pinningtechnique with three-dimensional (3D) planning to facilitate volar plating in dorsally comminuted intra-articular distal radius fractures. Methods Intotal 35 AO/OTA type C2 and C3 fractures were finally included.The 3D digital model of the fracture was reconstructed based on preoperative computedtomographic (CT) images, with the displacement of the comminuted dorsalfragment and the intra-articular fragment analyzed for preoperative planning. During operation, amodified intrafocal pinning technique was applied percutaneously from thedorsal aspect of the radius to reduce the collapsed intra-articular fragmentfollowing volar plating. Adequate reduction was confirmed in all of patientsconsidering radial height, radial inclination and volar tilt in postoperativeradiographs. Results No significant fracture re-displacement wasobserved in most of the cases during a mean follow-up period of 17.4 months, exceptfor two patients withthe C3 fracture. All of the patients achieved adequate clinicalROMs at 12 months postoperatively, with a mean DASH score of 12.0. Most of the patients achievedan excellent (n = 21) or good (n = 12) Gartland and Werley wrist score. Conclusions Ourmodified intrafocal pinning technique with 3D planning contributes to a satisfactoryclinical and radiological outcome in dorsally comminuted intra-articular distalradius fractures fixed with a volar locking plate. Trialregistration Notapplicable because the design of the study is retrospective.

scholarly journals Reproducibility of three dimensional digital preoperative planning for the osteosynthesis of distal radius fractures

2017 ◽  
Vol 35 (12) ◽  
pp. 2646-2651 ◽  
Author(s):  
Yuichi Yoshii ◽  
Takuya Kusakabe ◽  
Kenichi Akita ◽  
Wen Lin Tung ◽  
Tomoo Ishii
Keyword(s):  
Distal Radius ◽  
Preoperative Planning ◽  
Three Dimensional ◽  
Distal Radius Fractures ◽  
Radius Fractures

Distal Radius Fracture Treatment Outcomes in Patients With Ipsilateral Hemiplegia or Hemiparesis

Hand ◽  
2021 ◽  
pp. 155894472199973
Author(s):  
Nicholas Munaretto ◽  
Adam Tagliero ◽  
Raahil Patel ◽  
Peter C. Rhee
Keyword(s):  
Distal Radius Fracture ◽  
Distal Radius ◽  
Case Series ◽  
Distal Radius Fractures ◽  
Radius Fracture ◽  
Functional Classification ◽  
Radius Fractures ◽  
Radiographic Outcomes ◽  
Ipsilateral Hemiparesis

Background Little information exists to guide decision-making with regard to distal radius fractures in the setting of ipsilateral hemiparesis or hemiplegia. Methods Patients who sustained a distal radius fracture in the setting of ipsilateral hemiparesis or hemiplegia secondary to brain injury were evaluated. Investigated variables included perioperative pain, preinjury House functional classification score, length of immobilization, radiographic outcome measurements, and time to union. Results There were 15 patients with distal radius fractures with a mean age of 65.9 years. The mean clinical and radiographic follow-up was 2.8 and 2.9 years, respectively. Wrists were placed into the nonoperative group (NOG, n = 10) and operative group (OG, n = 5). Pain significantly decreased at final follow-up for both groups. Baseline House functional classification scores averaged 1.3 and 1.6 for the NOG and OG, respectively, and were maintained at final follow-up. Length of immobilization for the NOG was 46 days and OG was 37 days, P = .15. Radiographic outcomes at final follow-up in the NOG and OG, respectively, were a mean radial height of 9.3 versus. 11.6 mm, radial inclination of 18.3° versus 22.3°, 4.2° dorsal tilt versus 5.3° volar tilt, and tear drop angle of 45.6° versus 44.5°. There were no significant differences in these measurements. Time to radiographic union averaged 58 days for the NOG and 67 days for the OG, P = .42. There were no revision surgeries. Conclusions Based on this small case series, patients with distal radius fracture and ipsilateral hemiparesis or hemiplegia may have similar clinical, functional, and radiographic outcomes, regardless of nonoperative or operative treatment.

The correlation of initial radiographic characteristics of distal radius fractures and injuries of the triangular fibrocartilage complex

2016 ◽  
Vol 41 (5) ◽  
pp. 516-520 ◽  
Author(s):  
K. Kasapinova ◽  
V. Kamiloski
Keyword(s):  
Distal Radius Fracture ◽  
Distal Radius ◽  
Triangular Fibrocartilage Complex ◽  
Distal Radius Fractures ◽  
Radius Fracture ◽  
Wrist Arthroscopy ◽  
Radius Fractures ◽  
Level Of Evidence ◽  
Triangular Fibrocartilage ◽  
A Prospective Study

Our purpose was to determine the correlation of initial radiographic parameters of a distal radius fracture with an injury of the triangular fibrocartilage complex. In a prospective study, 85 patients with surgically treated distal radius fractures were included. Wrist arthroscopy was used to identify and classify triangular fibrocartilage complex lesions. The initial radial length and angulation, dorsal angulation, ulnar variance and distal radioulnar distance were measured. Wrist arthroscopy identified a triangular fibrocartilage complex lesion in 45 patients. Statistical analysis did not identify a correlation with any single radiographic parameter of the distal radius fractures with the associated triangular fibrocartilage complex injuries. The initial radiograph of a distal radius fracture does not predict a triangular fibrocartilage complex injury. Level of evidence: III

Is a short arm cast appropriate for stable distal radius fractures in patients older than 55 years? A randomized prospective multicentre study

2017 ◽  
Vol 42 (5) ◽  
pp. 487-492 ◽  
Author(s):  
M. J. Park ◽  
J. P. Kim ◽  
H. I. Lee ◽  
T. K. Lim ◽  
H. S. Jung ◽  
...  
Keyword(s):  
Multicentre Study ◽  
Distal Radius Fracture ◽  
Distal Radius ◽  
The Elderly ◽  
Plaster Cast ◽  
Distal Radius Fractures ◽  
Radius Fracture ◽  
Radius Fractures ◽  
Cast Immobilization ◽  
Level Of Evidence

We conducted a prospective randomized, multicentre study to compare short arm and long arm plaster casts for the treatment of stable distal radius fracture in patients older than 55 years. We randomly assigned patients over the age of 55 years who had stable distal radius fracture to either a short arm or long arm plaster cast at the first review 1 week after their injury. Radiographic and clinical follow-up was conducted at 1, 3, 5, 12 and 24 weeks following their injury. Also, degree of disability caused by each cast immobilization was evaluated at the patient’s visit to remove the cast. There were no significant differences in radiological parameters between the groups except for volar tilt. Despite these differences in volar tilt, neither functional status as measured by the Disabilities of the Arm, Shoulder and Hand, nor visual analogue scale was significantly different between the groups. However, the mean score of disability caused by plaster cast immobilization and the incidence rate of shoulder pain were significantly higher in patients who had a long plaster cast. Our findings suggest that a short arm cast is as effective as a long arm cast for stable distal radius fractures in the elderly. Furthermore, it is more comfortable and introduces less restriction on daily activities. Level of evidence: II

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