Abstract
Flatfoot hindfoot alignment: A comparison of clinical assessment and weightbearing conebeam CT
Foot and ankle surgery, Vol.23, pp.15-15
09/2017
DOI: 10.1016/j.fas.2017.07.1087
Abstract
Introduction: We compared clinical assessment of hindfoot valgus alignment in adult acquired Flatfoot deformity (AAFD) patients with different possible measurements performed on WB CBCT images.
Methods: Prospective study, 20 patients (20 feet) with clinical diagnosis of flexible AAFD. 12 males and 8 females, mean age of 52.2 years (20;88), average BMI of 30.35 kg/m2 (19.00–46.09). Patients underwent clinical and WB CBCT assessment of hindfoot alignment. Two independent and blinded observers performed different hindfoot alignment measurements on the WB CBCT images: 3D; clinical; alignment; Achilles tendon axis/calcaneal tuberosity angle; angles between the tibial axis and the calcaneal tuberosity, calcaneal axis and line connecting midpoint of subtalar joint and most inferior part of calcaneal tuberosity.
Differences were compared by paired T-test. Intra- and Inter-observer reliability for the WB CBCT measurements were evaluated.
Results: Mean clinical hindfoot valgus measured was 15.15° (SD 7.7°). It was found to be significantly different from all WB CBCT angles: 3D; clinical; alignment (10.42°); Achilles tendon/calcaneal tuberosity angle (2.96°); tibial axis/calcaneal tuberosity angle (5.42°); tibial axis/subtalar joint angle (7.52°) and tibial axis/calcaneal axis angle (20.39°). We found excellent intra-observer agreement for all CBCT measurements (range, 0.8863; 0.9713). There was also good to excellent inter-observer reliability, with the exception of the 3D; clinical; alignment, that showed moderate agreement.
Conclusion: The use of 3D WB CBCT imaging can help characterize the valgus hindfoot alignment in patients with AAFD. We found the different CBCT measurements modalities to be reliable and repeatable, and to significantly differ from the clinical evaluation.
Details
- Title: Subtitle
- Flatfoot hindfoot alignment: A comparison of clinical assessment and weightbearing conebeam CT
- Creators
- C de Cesar Netto - University of Alabama at Birmingham, United StatesS Demehri - Johns Hopkins University, United StatesA Chinanuvathana - Medstar Union Memorial Hospital, United StatesA Mousavian - Medstar Union Memorial Hospital, United StatesG Thawait - Johns Hopkins University, United StatesD Shakoor - Johns Hopkins University, United StatesL Fonseca - Medstar Union Memorial Hospital, United StatesL Schon - Medstar Union Memorial Hospital, United States
- Resource Type
- Abstract
- Publication Details
- Foot and ankle surgery, Vol.23, pp.15-15
- Publisher
- Elsevier Ltd
- DOI
- 10.1016/j.fas.2017.07.1087
- ISSN
- 1268-7731
- eISSN
- 1460-9584
- Language
- English
- Date published
- 09/2017
- Academic Unit
- Orthopedics and Rehabilitation
- Record Identifier
- 9984040204402771
Metrics
12 Record Views