Tags

Type your tag names separated by a space and hit enter

Intraobserver and interobserver reliability of cone beam weightbearing semi-automatic three-dimensional measurements in symptomatic pes cavovarus.
Foot Ankle Surg. 2020 Jul; 26(5):564-572.FA

Abstract

INTRODUCTION

Pes cavovarus is a three-dimensional (3D) foot deformity. New 3D semi-automatic measurements utilising weightbearing computerised topography (WBCT) images have recently been proposed to assess hindfoot alignment, but reliability in pes cavovarus has never been investigated. The aim of this study was to assess intraobserver and interobserver reliability of the foot ankle offset (FAO), calcaneal offset (CO) and hindfoot alignment angle (HAA) in pes cavovarus.

METHODS

Anonymised WBCT datasets from 51 feet (17 Charcot-Marie-Tooth related cavovarus, 17 idiopathic cavovarus and 17 controls) were retrospectively reviewed. Three observers (two senior foot and ankle fellows and one orthopaedic resident) independently measured FAO, CO and HAA using dedicated software, with measurements repeated two weeks apart. Subgroup analysis was performed to assess whether aetiology or severity of varus deformity and level of seniority affected reliability.

RESULTS

Mean values for intra and interobserver reliability for FAO (r=0.98; ICC: 0.99), CO (r=0.97; ICC: 0.98) and HAA measurements (r=0.97; ICC: 0.98) were excellent. Subgroup analyses showed that FAO, CO and HAA's intra (r/ρ range, 0.77-0.95) and interobserver (ICC range, 0.88-0.98) reliability remained excellent in patients with Charcot-Marie-Tooth related cavovarus, idiopathic pes cavovarus and normal feet, regardless of the severity of deformity. No difference was found in FAO, CO and HAA mean values from three observers (p>0.05 in all cases).

DISCUSSION

This study demonstrates that 3D semi-automatic measurements of WBCT images have excellent intra and interobserver reliability in the assessment of hindfoot alignment in pes cavovarus. Aetiology and severity of deformity, and level of seniority do not affect reliability of these measurements.

LEVEL OF EVIDENCE

Level III, retrospective comparative study.

Authors+Show Affiliations

Foot and Ankle Unit, Royal National Orthopaedic Hospital, Stanmore, United Kingdom; Department of Public Health, Trauma and Orthopaedics, University of Naples Federico II, Naples, Italy. Electronic address: alebernas@gmail.com.Foot and Ankle Unit, Royal National Orthopaedic Hospital, Stanmore, United Kingdom. Electronic address: lucy_cooper_@hotmail.co.uk.Foot and Ankle Unit, Royal National Orthopaedic Hospital, Stanmore, United Kingdom. Electronic address: shirleylyle@doctors.org.uk.Foot and Ankle Unit, Royal National Orthopaedic Hospital, Stanmore, United Kingdom. Electronic address: shelain.patel@doctors.org.uk.Foot and Ankle Unit, Royal National Orthopaedic Hospital, Stanmore, United Kingdom. Electronic address: stanmorefoot@gmail.com.Foot and Ankle Unit, Royal National Orthopaedic Hospital, Stanmore, United Kingdom. Electronic address: dishansingh@aol.com.Foot and Ankle Unit, Royal National Orthopaedic Hospital, Stanmore, United Kingdom. Electronic address: matthewwelck@doctors.org.uk.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31378592

Citation

Bernasconi, Alessio, et al. "Intraobserver and Interobserver Reliability of Cone Beam Weightbearing Semi-automatic Three-dimensional Measurements in Symptomatic Pes Cavovarus." Foot and Ankle Surgery : Official Journal of the European Society of Foot and Ankle Surgeons, vol. 26, no. 5, 2020, pp. 564-572.
Bernasconi A, Cooper L, Lyle S, et al. Intraobserver and interobserver reliability of cone beam weightbearing semi-automatic three-dimensional measurements in symptomatic pes cavovarus. Foot Ankle Surg. 2020;26(5):564-572.
Bernasconi, A., Cooper, L., Lyle, S., Patel, S., Cullen, N., Singh, D., & Welck, M. (2020). Intraobserver and interobserver reliability of cone beam weightbearing semi-automatic three-dimensional measurements in symptomatic pes cavovarus. Foot and Ankle Surgery : Official Journal of the European Society of Foot and Ankle Surgeons, 26(5), 564-572. https://doi.org/10.1016/j.fas.2019.07.005
Bernasconi A, et al. Intraobserver and Interobserver Reliability of Cone Beam Weightbearing Semi-automatic Three-dimensional Measurements in Symptomatic Pes Cavovarus. Foot Ankle Surg. 2020;26(5):564-572. PubMed PMID: 31378592.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Intraobserver and interobserver reliability of cone beam weightbearing semi-automatic three-dimensional measurements in symptomatic pes cavovarus. AU - Bernasconi,Alessio, AU - Cooper,Lucy, AU - Lyle,Shirley, AU - Patel,Shelain, AU - Cullen,Nicholas, AU - Singh,Dishan, AU - Welck,Matthew, Y1 - 2019/07/26/ PY - 2019/04/19/received PY - 2019/06/30/revised PY - 2019/07/17/accepted PY - 2019/8/6/pubmed PY - 2019/8/6/medline PY - 2019/8/6/entrez KW - Cavovarus KW - Charcot-Marie-Tooth KW - Cone beam KW - High arch KW - Hindfoot KW - Weightbearing CT SP - 564 EP - 572 JF - Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons JO - Foot Ankle Surg VL - 26 IS - 5 N2 - INTRODUCTION: Pes cavovarus is a three-dimensional (3D) foot deformity. New 3D semi-automatic measurements utilising weightbearing computerised topography (WBCT) images have recently been proposed to assess hindfoot alignment, but reliability in pes cavovarus has never been investigated. The aim of this study was to assess intraobserver and interobserver reliability of the foot ankle offset (FAO), calcaneal offset (CO) and hindfoot alignment angle (HAA) in pes cavovarus. METHODS: Anonymised WBCT datasets from 51 feet (17 Charcot-Marie-Tooth related cavovarus, 17 idiopathic cavovarus and 17 controls) were retrospectively reviewed. Three observers (two senior foot and ankle fellows and one orthopaedic resident) independently measured FAO, CO and HAA using dedicated software, with measurements repeated two weeks apart. Subgroup analysis was performed to assess whether aetiology or severity of varus deformity and level of seniority affected reliability. RESULTS: Mean values for intra and interobserver reliability for FAO (r=0.98; ICC: 0.99), CO (r=0.97; ICC: 0.98) and HAA measurements (r=0.97; ICC: 0.98) were excellent. Subgroup analyses showed that FAO, CO and HAA's intra (r/ρ range, 0.77-0.95) and interobserver (ICC range, 0.88-0.98) reliability remained excellent in patients with Charcot-Marie-Tooth related cavovarus, idiopathic pes cavovarus and normal feet, regardless of the severity of deformity. No difference was found in FAO, CO and HAA mean values from three observers (p>0.05 in all cases). DISCUSSION: This study demonstrates that 3D semi-automatic measurements of WBCT images have excellent intra and interobserver reliability in the assessment of hindfoot alignment in pes cavovarus. Aetiology and severity of deformity, and level of seniority do not affect reliability of these measurements. LEVEL OF EVIDENCE: Level III, retrospective comparative study. SN - 1460-9584 UR - https://www.unboundmedicine.com/medline/citation/31378592/Intraobserver_and_interobserver_reliability_of_cone_beam_weightbearing_semi_automatic_three_dimensional_measurements_in_symptomatic_pes_cavovarus_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1268-7731(19)30110-9 DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.