Natural Value of Böhler's Angle in Normal Chinese Population

Ma, Zhijian; Bai, Liping; Zhang, Guang‐ming; Zhang, Lian‐bi; Chen, Zhong

doi:10.1111/os.12560

Cited by 5 publications

(7 citation statements)

References 35 publications

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“…Previous studies assessing BA in various ethnicities have also reported similar findings of BA measurements (31-36 degrees), with no significant differences in laterality. [4][5][6][7][8]25 However, this is the first study to demonstrate that commonly used radiographic parameters for the calcaneus do not differ significantly from side to side. More importantly, the intersubject variability is far greater than the within-subject side-to-side differences.…”

Section: Discussionmentioning

confidence: 78%

“…com/JOT/B544 illustrating x-ray obliquity). 6,11,12 Statistical Analysis Demographic data were reported using mean values and standard deviations for continuous variables. Categorical variables were reported using frequencies and percentages.…”

Section: Methodsmentioning

confidence: 99%

“…Several studies have assessed normal ranges of BA and CAG; however, there have been indications that these parameters may differ based on ethnicity and radiograph obliquity (XRO). [4][5][6][7][8][9][10][11][12] There is a paucity of literature regarding anatomic features of the calcaneus in the American population. Although there have been previous studies assessing the differences in calcaneal anatomy between various populations as a whole, there are currently no studies, to our knowledge, which have evaluated these parameters between contralateral calcanei within the same patients.…”

Section: Introductionmentioning

confidence: 99%

“…Although there have been previous studies assessing the differences in calcaneal anatomy between various populations as a whole, there are currently no studies, to our knowledge, which have evaluated these parameters between contralateral calcanei within the same patients. [4][5][6][7][8] The clinical application of side-by-side equivalence is most relevant when planning for open reduction and internal fixation (ORIF) of displaced intra-articular calcaneus fractures (DIACF). This equivalence would allow for calcaneus ORIF templating based on the uninjured contralateral foot, leading to decreased operative time and potential improvement in reduction quality, an important factor in clinical outcomes.…”

Section: Introductionmentioning

confidence: 99%

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Radiographic Templating for Calcaneus Operative Fixation: How Similar Is Side-to-Side Comparison?

Raji

LaTulip

Faraji

et al. 2022

Journal of Orthopaedic Trauma

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Objectives: Calcaneal fractures often require contralateral, uninjured calcaneus radiographs as a template. The purpose of this study was to establish mean values for calcaneal radiographic parameters in an uninjured urban American population and perform side-by-side comparison with respect to age, sex, laterality, and radiograph obliquity (XRO).Design: Retrospective analysis of consecutive patients.Setting: Fourteen hospitals including Level 1 trauma center.Patients/Participants: Retrospective review of .800 uninjured patients with bilateral foot and calcaneus radiographs obtained between June and December 2019 was performed. Inclusion criteria were the following: age 18-89 years without fracture; previous foot surgical procedures; radiographic evidence of arthrosis in ankle, hindfoot, or midfoot; osteomyelitis; tumor; or foot deformities. Intervention:The lateral radiographs were independently reviewed by 3 observers, measuring Böhler angle (BA), crucial angle of Gissane (CAG), calcaneal length (CL), calcaneal height (CH), calcaneotalar ratio (CTR), and XRO. Main Outcome Measurements:The mean values of BA, CAG, CL, CH, and CTR were established. Side-by-side comparisons were completed with respect to age, sex, laterality, and XRO.Results: There were no statistically significant differences in sideby-side measurements of the BA, CAG, CL, or CH. XRO had significant effects on the measurements of BA, CAG, CH, and CTR. Side-by-side comparisons showed greater intersubject variability than within-subject differences. Conclusions:We did not observe any differences in commonly measured calcaneal radiographic parameters. CAG is not a reliable parameter for diagnostic and operative planning purposes. We conclude that the use of contralateral calcaneus radiographs as templates for calcaneus fractures is a valid technique.

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Section: Discussionmentioning

confidence: 78%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Radiographic Templating for Calcaneus Operative Fixation: How Similar Is Side-to-Side Comparison?

Raji

LaTulip

Faraji

et al. 2022

Journal of Orthopaedic Trauma

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“…The calcaneal pitch angle was defined as the angle formed by a line parallel to the ground and a line connecting the two most inferior points on the calcaneus on the lateral view 25 (Fig. 4).…”

Section: Methodsmentioning

confidence: 99%

Mid‐term Results of Subtalar Arthroereisis with Talar‐Fit Implant in Pediatric Flexible Flatfoot and Identifying the Effects of Adjunctive Procedures and Risk Factors for Sinus Tarsi Pain

Wang

Chen

et al. 2020

Orthopaedic Surgery

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Objectives To (i) report the mid‐term outcomes of subtalar arthroereisis using Talar‐Fit implant for the treatment of flexible flatfoot patients; (ii) compare clinical and radiographic outcomes between arthroereisis with and without adjunctive operative procedures to investigate the effects of adjuncts on the outcomes; and (iii) analyze the risk factors associated with sinus tarsi pain, which is the most common postoperative complication of arthroereisis. Methods Thirty‐one flexible flatfoot children and adolescents (46 feet) treated with subtalar arthroereisis using Talar‐Fit implant from June 2014 to May 2019 were retrospectively analyzed. The feet were divided into four treatment groups: (i) arthroereisis alone, (ii) arthroereisis with gastrocnemius recession, (iii) arthroereisis with Kidner procedure, and (iv) arthroereisis with gastrocnemius recession and Kidner procedure. Clinical function was evaluated based on the American Orthopaedic Foot and Ankle Society (AOFAS) ankle and hindfoot score. The following angles were measured for radiographic evaluation: talar‐first metatarsal angle, calcaneal pitch angle, and talar declination angle on the lateral view; and talar‐first metatarsal angle, talocalcaneal angle, and anteroposterior talonavicular coverage angle on the anteroposterior (AP) view. The paired Student's t‐test was used to compare the pre‐ and postoperative angular measurements and AOFAS scores. The Wilcoxon rank‐sum test was undertaken to determine the outcome differences among four treatment groups. Multivariate logistic regression analysis was used to analyze risk factors for sinus tarsi pain. P value <0.05 is considered statistically significant. Results The mean follow‐up of the feet was 32.8 months (range, 10–71 months). The mean AOFAS score significantly improved from 55.5 ± 14.5 preoperatively to 86.3 ± 9.9 (P < 0.001). Comparison of radiographic outcomes showed that the lateral talar‐first metatarsal angle decreased by a mean of 19.1° ± 11.9° (P < 0.001), the calcaneal pitch angle increased by a mean of 5.4° ± 3.4° (P < 0.001), the talar declination angle decreased by a mean of 14.8° ± 9.9° (P < 0.001), the AP talar‐first metatarsal angle decreased by a mean of 15.6° ± 10.3° (P < 0.001), the AP talocalcaneal angle decreased by a mean of 7.2° ± 8.3° (P = 0.001), and the AP talonavicular coverage angle decreased by a mean of 20.4° ± 9.0° (P < 0.001). There were no statistically significant differences with regard to AOFAS score and all angle measurements on both the AP and lateral views among the four treatment groups. There was one dislocation case caused by a fall 6 weeks after surgery, which was treated nonoperatively. The incidence of sinus tarsi pain was 13% and logistic regression analysis indicated that patients with a longer distance from the tail end of the implant to the lateral calcaneal wall had 38.8% greater odds of developing sinus tarsi pain. Conclusions The mid‐term clinical and radiographic results were satisfactory in patients who underwent the subtalar arthroereisis procedur...

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The morphology of osseous structure in subtalar joint with chronic ankle instability

Zhang,

Sun,

Jiang

et al. 2024

Foot and Ankle Surgery

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Natural Value of Böhler's Angle in Normal Chinese Population

Cited by 5 publications

References 35 publications

Radiographic Templating for Calcaneus Operative Fixation: How Similar Is Side-to-Side Comparison?

Radiographic Templating for Calcaneus Operative Fixation: How Similar Is Side-to-Side Comparison?

Mid‐term Results of Subtalar Arthroereisis with Talar‐Fit Implant in Pediatric Flexible Flatfoot and Identifying the Effects of Adjunctive Procedures and Risk Factors for Sinus Tarsi Pain

The morphology of osseous structure in subtalar joint with chronic ankle instability

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