scholarly journals Scaphoid Fracture Patterns—Part One: Three-Dimensional Computed Tomography Analysis

2019 ◽  
Vol 08 (06) ◽  
pp. 441-445
Author(s):  
Tessa Drijkoningen ◽  
Amin Mohamadi ◽  
Shai Luria ◽  
Geert A. Buijze
Keyword(s):  
Computed Tomography ◽  
Scaphoid Fracture ◽  
Three Dimensional ◽  
Principal Component ◽  
Fracture Pattern ◽  
Level Of Evidence ◽  
Avulsion Fractures ◽  
Density Mapping ◽  
Scaphoid Fractures ◽  
Fracture Area

Abstract Objective Using three-dimensional (3D) computed tomography models of acute scaphoid fractures, we looked for differences between volumetric size of the fracture fragments, recognizable groups, or a shared common fracture area. Methods We studied 51 patients with an adequate computed tomography scan of an acute scaphoid fracture using 3D modeling. Fracture surfaces were identified and fragment volumetric size of the fracture fragments was measured. A principal component analysis was used to find groups. Density mapping was used to image probable common fracture areas in the scaphoid. Results Forty-nine of 51 fractures had a similar pattern. It was not possible to identify subgroups based on fracture pattern. The mean volumetric size of the fracture fragments of the proximal (1.45 cm3 ± 0.49 cm3 standard deviation [SD]) and distal fracture fragments (1.53 cm3 ± 0.48 cm3 SD) was similar. There was a single common fracture area in the middle third of the bone. In the distal third, there were no horizontal fractures through—but only directly proximal to—the tubercle suggesting that these would be best classified as distal waist fractures. Conclusion Acute scaphoid fractures mainly occur in the middle third of the bone and tend to divide the scaphoid in half by volumetric size of the fracture fragments. There were two distinct grouping patterns: fractures through the proximal and middle third were horizontal oblique, whereas fractures of the distal third were vertical oblique. It seems that scaphoid fractures might be classified into proximal pole fractures, a range of waist fractures, and tubercle avulsion fractures. Level of evidence This is a Level IV study.

Scaphoid fracture displacement is not correlated with the fracture angle

2021 ◽  
pp. 175319342110044
Author(s):  
Ophir Aruse ◽  
Igor Immerman ◽  
Omar Badir ◽  
Madi El Haj ◽  
Ido Volk ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Computer Model ◽  
Scaphoid Fracture ◽  
Three Dimensional ◽  
Principal Component ◽  
Ct Scans ◽  
Level Of Evidence ◽  
Fracture Angle ◽  
Fracture Displacement ◽  
Scaphoid Fractures

Classifications of scaphoid fractures associate the angle of the fracture with its stability. To examine this assumption, we measured acute scaphoid fracture angles and inclinations in relation to different scaphoid axes, using fracture displacement as an indicator of instability. We examined the effect of using different axes on the measurements of angles. CT scans of 133 scaphoid fractures were classified according to the location of the fractures. Using a three-dimensional computer model, we computed four scaphoid axes. For each fracture, we then measured the fracture angle and the direction of the fracture inclination in relation to each one of the axes. We found a correlation between displacement and the angles of proximal fractures using one of these axes (the surface principal component analysis axis). No such correlations were found for waist fractures, which were the majority of fractures. There were significant differences between the measurements made with different axes. The findings indicate that the angle of the fracture and the direction of the fracture inclination are minor factors in the displacement of most scaphoid fractures. Level of evidence: III

scholarly journals Importance of Computed Tomography in Determining Displacement in Scaphoid Fractures

2017 ◽  
Vol 07 (01) ◽  
pp. 038-042 ◽  
Author(s):  
Emily Gilley ◽  
Sameer Puri ◽  
Krystle Hearns ◽  
Andrew Weiland ◽  
Michelle Carlson
Keyword(s):  
Computed Tomography ◽  
Ct Scan ◽  
Interobserver Reliability ◽  
Scaphoid Fracture ◽  
High Rate ◽  
Radiographic Evaluation ◽  
Angular Deformity ◽  
Level Of Evidence ◽  
Scaphoid Fractures ◽  
The Mean

Background Displaced scaphoid fractures have a relatively high rate of nonunion. Detection of displacement is vital in limiting the risk of nonunion when treating scaphoid fractures. Questions/Purpose We evaluated the ability to diagnose displacement on radiographs and computed tomography (CT), hypothesizing that displacement is underestimated in assessing scaphoid fracture by radiograph compared with CT. Materials and Methods Thirty-five preoperative radiographs and CT scans of acute scaphoid fractures were evaluated by two blinded observers. Displacement and angular deformity were measured, and the fracture was judged as displaced or nondisplaced. Scapholunate, radiolunate, and intrascaphoid angles were measured. Radiograph and CT measurements between nondisplaced and displaced fractures were compared. Intraobserver reliability was measured. Results  Reader 1 identified 12 fractures as nondisplaced on radiograph, but displaced on CT (34%). Reader 2 identified 9 fractures as nondisplaced on radiograph, but displaced on CT (26%). For displaced fractures, the mean intrascaphoid angle was over three times greater when measured on CT than on radiograph (56 vs. 16 degrees). Scapholunate angle >65 degrees and radiolunate angle >16 degrees were significantly associated with displacement on CT. Interobserver reliability for diagnosing displacement was perfect on CT but less reliable on radiograph. Conclusion Scaphoid fracture displacement on CT was identified in 26 to 34% of fractures that were nondisplaced on radiograph, confirming that radiographic evaluation alone underestimates displacement. These results underscore the importance of CT scan in determining displacement and angular deformity when evaluating scaphoid fractures, as it may alter the decision on treatment and surgical approach to the fracture. We recommend considering CT scan to evaluate all scaphoid fractures. Level of Evidence Level III.

DIFFERENCES IN RADIOGRAPHIC FINDINGS BETWEEN SCAPHOID FRACTURE PATTERNS

Hand Surgery ◽  
2004 ◽  
Vol 09 (02) ◽  
pp. 197-202 ◽  
Author(s):  
H. Inagaki ◽  
R. Nakamura ◽  
E. Horii ◽  
E. Nakao ◽  
M. Tatebe
Keyword(s):  
Computed Tomography ◽  
Scaphoid Fracture ◽  
Three Dimensional ◽  
Fracture Pattern ◽  
Proximal Fragment ◽  
Oblique View ◽  
Radiographic Findings ◽  
Fracture Patterns ◽  
Significant Difference ◽  
Dorsal Intercalated Segment Instability

Scaphoid fracture patterns can be divided into volar and dorsal type using three-dimensional computed tomography. Ninety-nine patients underwent this examination plus radiography to determine how often fracture pattern was identifiable by radiography including proximal fragment ratio (PFR) measurement. Oblique radiographs obtained at 45° of pronation demonstrated a volar displacement in 28 of 37 volar type fractures in three-dimensional computed tomography (76%), while as oblique view with 45° of supination could identify the dorsal type in ten of 18 (56%). PFR showed a significant difference, with means of 0.59 for volar type and 0.43 for dorsal type. Using oblique views in the two rotational directions together with the PFR, the two fracture patterns could be differentiated in 35 of 43 fractures (81%). No differences were evident between the two fracture patterns with respect to prevalence of dorsal intercalated segment instability deformity.

Robot-assisted percutaneous scaphoid fracture fixation: a report of ten patients

2019 ◽  
Vol 44 (7) ◽  
pp. 685-691 ◽  
Author(s):  
Bo Liu ◽  
Feiran Wu ◽  
Shanlin Chen ◽  
Xieyuan Jiang ◽  
Wei Tian
Keyword(s):  
Scaphoid Fracture ◽  
Three Dimensional ◽  
Contralateral Side ◽  
Level Of Evidence ◽  
Robotic Assisted ◽  
Scaphoid Fractures ◽  
Flexion Extension ◽  
The Mean ◽  
Set Up

This study reports the technique, efficacy and safety of robotic-assisted, computer-navigated, percutaneous fixation of scaphoid fractures. Ten males with acute undisplaced waist fractures underwent fixation with this method using a commercially available three-dimensional fluoroscopy unit and robotic navigation system. The mean total operative duration was 40 minutes, which comprised of a set-up time of 18 minutes and planning and surgical time of 22 minutes. All patients required only a single guidewire insertion attempt, and there were no screw protuberances or other complications. All fractures united at a mean of 8 weeks. At a mean follow-up of 6.5 months (range 6–8), the mean Mayo wrist score was 96, patient-rated wrist evaluation was 2, flexion-extension arc was 96% and grip strength was 91% of the contralateral side. We conclude from our patients that robotic-assisted percutaneous scaphoid fixation is feasible, safe and accurate, and is a satisfactory method for treating these injuries. Level of evidence: IV

The influence of fracture location and comminution on acute scaphoid fracture displacement: three-dimensional CT analysis

2021 ◽  
pp. 175319342110409
Author(s):  
Anne Eva J. Bulstra ◽  
Rami M. A. Al-Dirini ◽  
Arthur Turow ◽  
Miriam G. E. Oldhoff ◽  
Kimberley Bryant ◽  
...  
Keyword(s):  
Scaphoid Fracture ◽  
Three Dimensional ◽  
Dorsal Side ◽  
Proximal Fragment ◽  
Exit Point ◽  
Level Of Evidence ◽  
Fracture Location ◽  
Fracture Displacement ◽  
Scaphoid Fractures ◽  
Ct Analysis

We aimed to assess the influence of fracture location and comminution on acute scaphoid fracture displacement using three-dimensional CT. CT scans of 51 adults with an acute scaphoid fracture were included. Three-dimensional CT was used to assess fracture location, comminution and displacement. Fracture location was expressed as the height of the cortical breach on the volar and dorsal side of the scaphoid relative to total scaphoid length (%), corresponding to the fracture’s entry and exit point, respectively. We found a near-linear relation between dorsal fracture location and displacement. As dorsal fracture location became more distal, translation (ulnar, proximal, volar) and angulation (flexion, pronation) of the distal fragment relative to the proximal fragment increased. Comminuted fractures had more displacement. Dorsal fracture location predictably dictates the direction of translation and angulation in displaced scaphoid fractures. Surgeon attention to dorsal fracture location can help identify displacement patterns and provide guidance in adequately reducing a displaced scaphoid fracture. Level of evidence: III

scholarly journals Factors Associated with Scaphoid Nonunion following Early Open Reduction and Internal Fixation

2020 ◽  
Vol 09 (02) ◽  
pp. 141-149
Author(s):  
Pooja Prabhakar ◽  
Lauren Wessel ◽  
Joseph Nguyen ◽  
Jeffrey Stepan ◽  
Michelle Carlson ◽  
...  
Keyword(s):  
Internal Fixation ◽  
Open Reduction ◽  
Scaphoid Fracture ◽  
Receiver Operating Curve ◽  
Scaphoid Nonunion ◽  
Retrospective Case ◽  
Level Of Evidence ◽  
Fracture Location ◽  
Scaphoid Fractures ◽  
Time From Injury

Abstract Background Nonunion after open reduction and internal fixation (ORIF) of scaphoid fractures is reported in 5 to 30% of cases; however, predictors of nonunion are not clearly defined. Objective The purpose of this study is to determine fracture characteristics and surgical factors which may influence progression to nonunion after scaphoid fracture ORIF. Patients and Methods We performed a retrospective case–control study of scaphoid fractures treated by early ORIF between 2003 and 2017. Inclusion criteria were surgical fixation within 6 months from date of injury and postoperative CT with minimum clinical follow-up of 6 months to evaluate healing. Forty-eight patients were included in this study. Nonunion cases were matched by age, sex, and fracture location to patients who progressed to fracture union in the 1:2 ratio. Results This series of 48 patients matched 16 nonunion cases with 32 cases that progressed to union. Fracture location was proximal pole in 15% (7/48) and waist in 85% (41/48). Multivariate regression demonstrated that shorter length of time from injury to initial ORIF and smaller percent of proximal fracture fragment volume were significantly associated with scaphoid nonunion after ORIF (63 vs. 27 days and 34 vs. 40%, respectively). Receiver operating curve analysis revealed that fracture volume below 38% and time from injury to surgery greater than 31 days were associated with nonunion. Conclusion Increased likelihood for nonunion was found when the fracture was treated greater than 31 days from injury and when fracture volume was less than 38% of the entire scaphoid. Level of Evidence This is a Level III, therapeutic study.

Reliability of clinical tests for prediction of occult scaphoid fractures and cost benefit analysis of a dedicated scaphoid pathway

2020 ◽  
pp. 175319342097946
Author(s):  
Preetham Kodumuri ◽  
Andrew McDonough ◽  
Victoria Lyle ◽  
Zaf Naqui ◽  
Lindsay Muir
Keyword(s):  
Outcome Measure ◽  
Cost Benefit Analysis ◽  
Scaphoid Fracture ◽  
Cost Benefit ◽  
Clinical Suspicion ◽  
Secondary Outcome ◽  
Secondary Outcome Measure ◽  
Post Injury ◽  
Level Of Evidence ◽  
Scaphoid Fractures

We reviewed the outcomes of our dedicated clinic for suspected scaphoid fractures. The primary outcome measure was to test the reliability of accurately diagnosing an occult scaphoid fracture with a combination of anatomical snuff box, scaphoid tubercle, longitudinal compression tenderness, ulnar deviation and the pinch test. Cost savings of the new patient pathway was our secondary outcome measure. Between December 2016 and March 2020, 922 patients were recruited at a mean of 12 days post-injury. Sixty-five per cent ( n = 602) with a low clinical suspicion were discharged and 35% ( n = 320) with a high clinical suspicion had same day MRI scan. Fifty-eight scaphoid fractures were diagnosed and treated with no nonunions reported. Anatomical snuff box tenderness was the most sensitive test (90%). A combination of five tests better excluded an occult fracture (80% accuracy). The dedicated scaphoid clinic pathway resulted in 350 fewer follow-up visits and an overall saving of £59,666. Level of evidence: III

scholarly journals Pediatric Scaphoid Nonunions: A Case Series, Review of the Literature, and Evidence-Based Guidelines

2019 ◽  
Vol 09 (01) ◽  
pp. 002-012 ◽  
Author(s):  
Kerstin Oestreich ◽  
Tatiana Umata Yoko Jacomel ◽  
Sami Hassan ◽  
Maxim David Horwitz ◽  
Tommy Roger Lindau
Keyword(s):  
Nonoperative Management ◽  
Pediatric Population ◽  
Scaphoid Fracture ◽  
Case Series ◽  
Fracture Site ◽  
X Rays ◽  
Review Of The Literature ◽  
Level Of Evidence ◽  
Scaphoid Fractures ◽  
Magnetic Resonance Imaging Mri

Abstract Background Scaphoid fractures represent less than 3% of hand and wrist fractures in the pediatric population. Nonunions are very rare. We present a case series (n = 18) of nonunions in skeletally immature children and adolescents. We further present a review of the literature on pediatric scaphoid nonunions. Materials and Methods We reviewed the literature by searching the main databases on pediatric scaphoid nonunions, but to identify factors that lead to nonunion, we also searched for databases on scaphoid fractures. Seventy articles were found for the period between 1961 and 2019, all with level 4/5 evidence. Results The nonunion rate of pediatric scaphoid fractures in the literature is on average 1.5%, occurring mostly as a result of missed or underdiagnosed injuries, similar to our presented case series. Half (n = 9) of the injuries in our case series were missed initial injuries, leading to scaphoid nonunions and half developed nonunions after initial treatment. We found excellent outcomes and with surgical and nonoperative management, with few complications. Not surprisingly, the duration of immobilization is longer with nonoperative management. Conclusions Based on the literature, we recommend a period of nonoperative management before surgery in undisplaced nonunions. In displaced nonunions, open reduction and internal fixation ± bone grafting is necessary. In pediatric scaphoid fractures, similar to adult cases, we identified that suspicious scaphoid fractures should be considered for initial immobilization, and repeat X-rays and early magnetic resonance imaging (MRI) or computed tomography (CT) scans should be considered at follow-up. Immobilization time and type of plaster should be appropriate in relation to the fracture site, similar to the adult scaphoid fracture. Level of Evidence This is a Level IV study.

scholarly journals Coracoid Process Avulsion Fracture at the Coracoclavicular Ligament Attachment Site in an Osteoporotic Patient with Acromioclavicular Joint Dislocation

2016 ◽  
Vol 2016 ◽  
pp. 1-3 ◽  
Author(s):  
Yoshihiro Onada ◽  
Takahisa Umemoto ◽  
Kimitaka Fukuda ◽  
Tomomichi Kajino
Keyword(s):  
Computed Tomography ◽  
Acromioclavicular Joint ◽  
Three Dimensional ◽  
Attachment Site ◽  
Coracoid Process ◽  
Acromioclavicular Joint Dislocation ◽  
Coracoclavicular Ligament ◽  
Ct Reconstruction ◽  
Avulsion Fractures ◽  
Satisfactory Outcome

Coracoid fractures are uncommon, mostly occur at the base or neck of the coracoid process (CP), and typically present with ipsilateral acromioclavicular joint (ACJ) dislocation. However, CP avulsion fractures at the coracoclavicular ligament (CCL) attachment with ACJ dislocation have not been previously reported. A 59-year-old woman receiving glucocorticoid treatment fell from bed and complained of pain in her shoulder. Radiographs revealed an ACJ dislocation with a distal clavicle fracture. Three-dimensional computed tomography (3D-CT) reconstruction showed a small bone fragment at the medial apex of the CP. She was treated conservatively and achieved a satisfactory outcome. CP avulsion fractures at the CCL attachment can occur in osteoporotic patients with ACJ dislocations. Three-dimensional computed tomography is useful for identifying this fracture type. CP avulsion fractures should be suspected in patients with ACJ dislocations and risk factors for osteoporosis or osteopenia.

scholarly journals Scaphoid Fracture Patterns—Part Two: Reproducibility and Demographics of a Simplified Scaphoid Fracture Classification

2019 ◽  
Vol 08 (06) ◽  
pp. 446-451
Author(s):  
Tessa Drijkoningen ◽  
Amin Mohamadi ◽  
Wouter F. van Leeuwen ◽  
Yonatan Schwarcz ◽  
David Ring ◽  
...  
Keyword(s):  
Electronic Medical Records ◽  
Medical Records ◽  
Interobserver Reliability ◽  
Scaphoid Fracture ◽  
Fracture Classification ◽  
Proximal Pole ◽  
Level Of Evidence ◽  
Related Factors ◽  
Scaphoid Fractures ◽  
Fracture Patterns

Abstract Objective To analyze the reproducibility, reliability, and demographics of a simplified anatomical scaphoid fracture classification based on posteroanterior radiographs using a large database of scaphoid fractures. Methods The study consisted of a retrospective review of electronic medical records of 871 consecutive patients. All patients presented between 2003 and 2014 at two centers. Patient- and surgeon-related factors were analyzed. Additionally, interobserver reliability of the Herbert and simplified scaphoid fracture classifications were tested. Results Proximal pole fractures were defined as fractures in which the center of the fracture line was proximal to the distal scapholunate interval (n = 30), waist fractures (n = 802) were defined as fractures involving the scaphocapitate interval, and distal tubercle fractures (n = 39) were defined as fractures involving the scaphotrapeziotrapezoid (STT) interval. The interobserver reliability of the simplified classification was fair (κ = 0.37) as for the Herbert classification (κ = 0.31). The average doubt of the answers of the observers was 2.1 on a scale from 0 to 10 for the simplified classification and 3.6 for the Herbert classification (P < 0.05). Conclusions All complete fractures across the entire scaphoid distal to the scapholunate articulation and proximal to the STT joint can be classified as waist fractures; nonwaist scaphoid fractures are uncommon (6%) and have somewhat different presentations compared to waist fractures. Simplifying the fracture classification slightly improves interobserver reliability, although remaining fair, and significantly reduces doubt. Level of Evidence This is a Level III, prognostic study.

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