Mechanical Ankle Joint Axis Point on a Hip-to-Calcaneus Long Leg View Correlates Significantly With SPECT/CT Activation in Symptomatic Asymmetric Ankle Osteoarthritis.
| Autor: | Spierenburg W; Department of Orthopedic Surgery, Martini Hospital Groningen, Groningen, the Netherlands., de Vries A; Department of Orthopedic Surgery, Martini Hospital Groningen, Groningen, the Netherlands., van der Wel H; Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands., Kraeima J; Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands., Dal M; Department of Radiology, Martini Hospital Groningen, Groningen, the Netherlands., van Raaij T; Department of Orthopedic Surgery, Martini Hospital Groningen, Groningen, the Netherlands. |
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| Jazyk: | angličtina |
| Zdroj: | Foot & ankle international [Foot Ankle Int] 2024 Oct; Vol. 45 (10), pp. 1131-1138. Date of Electronic Publication: 2024 Aug 02. |
| DOI: | 10.1177/10711007241263797 |
| Abstrakt: | Background: Asymmetric joint load is the main cause of development of ankle osteoarthritis (OA). Realignment surgery aims to transfer ankle joint load from the degenerative area toward the uninvolved area. Determination of the optimal shift is still challenging. When the degenerative area is correlated to the ankle joint mechanical axis establishing an optimal target angle for corrective surgery may become more feasible. The primary aim of our study was to investigate if the area of ankle joint activation on single-photon emission computed tomography and conventional computed tomography (SPECT/CT) imaging correlates with the mechanical ankle joint axis point (MAJAP). Methods: In this cross-sectional study, patients 18 years or older with symptomatic asymmetric ankle OA and a hip-to-calcaneus long leg view with SPECT/CT of the affected ankle were eligible for inclusion. Primary outcome was MAJAP divided into 3 alignment categories (medial shift, neutral, lateral shift). SPECT/CT activation was determined in 8 different areas of the ankle joint. A Spearman rho correlation coefficient was calculated to investigate the relationship between the alignment categories and SPECT/CT activation in the 8 areas. Results: Forty-nine patients (mean age 58.8 [SD 10.0] years) with 52 ankles with moderate to severe asymmetric OA were included. A significantly (Spearman rho -0.379 [ P = .006] and Spearman rho -0.279 [ P = .045]) higher proportion of ankles with radioisotope uptake in the anteromedial ankle joint areas (zones 1 and 5) was seen in the medial shift category. A significantly (Spearman rho .312 ( P = .025)) higher proportion of ankles with radioisotope uptake in the anterolateral ankle joint area (zone 8) was seen in the lateral shift category. Conclusion: We found in this patient group that the area of SPECT/CT uptake in asymmetric ankle OA was associated to MAJAP measured on hip-to-calcaneus weightbearing views, although the strength of the correlation is weak to moderate. Consequently, nonweightbearing metabolic SPECT/CT radiotracer uptake has the potential to help determine the area to unload in ankle joint-preserving alignment surgery. Competing Interests: Ethical ApprovalEthical approval for this study was obtained from the Martini Hospital (MEC number 2020-144). Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. Disclosure forms for all authors are available online. |
| Databáze: | MEDLINE |
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