Patterns of bone tracer uptake on SPECT-CT in symptomatic and asymptomatic patients with primary total hip arthroplasty
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The primary purpose of this study was to compare bone tracer uptake (BTU) on SPECT/CT in symptomatic and asymptomatic total hip arthroplasty (THA) and identify a possible relationship between BTU patterns and patient’s symptoms. The secondary purpose was to investigate if the fixation methods (cemented versus uncemented) lead to different BTU patterns.
A total of 58 THAs, 31 symptomatic (group S) and 27 asymptomatic (group AS), were prospectively collected and retrospectively analyzed. All symptomatic patients underwent standardized detailed history, clinical examination, radiographs and 99mTc-HDP SPECT/CT. BTU in SPECT/CT was quantified in three dimensions and anatomically localized in a scheme of quadrants and levels using a customized previously validated software. T tests were used on both quadrants and levels inside and between groups. A Pearson correlation was performed for BTU within the quadrants. An area under receiver operating characteristic curves was drawn in order to find a BTU value that could differentiate the two groups. Within the groups, patients with cemented and uncemented stems were compared for influences on BTU intensity.
The causes of pain were identified in 61% of the patients. The most common problem was aseptic loosening (n = 12). In group AS, levels 1, 2 and 5 had similar BTUs. BTUs in these levels were significantly higher than in level 3, 4 and 6. In group S, no significant differences were seen in terms of BTU in level 1–5. However, BTU here was significantly higher than at level 6 (p < 0.001). In both groups, level 1, the superior, had a significantly higher BTU than level 2 (group AS p < 0.01, group S p < 0.05). Comparing the BTU of the two groups among levels, significant differences were found for level 4, level 5 and the entire stem areas (p < 0.05). The ROC curve calculated on the whole stem allowed identification of a BTU ratio of 3.1 that separated the 92.6% patients of group AS with BTU < 3.1 from the 54.8% of patients of group S with a BTU ≥ 3.1. With regards to the fixation technique, only the BTU at the level 6 in group S presented a significant difference between cemented and uncemented stems (p < 0.05).
Higher BTU levels significantly correlated with symptoms, but a normal BTU could not exclude a specific pathology after THA. A threshold of BTU in SPECT/CT was identified to distinguish between symptomatic and asymptomatic patients after THA.
KeywordsSPECT/CT Total hip arthroplasty Bone tracer uptake Total hip replacement Single-photon emission computerized tomography Bone scan Pain
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflicts of interest.
Informed consent was obtained from all individual participants included in the study.
Studies involving human participants
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
- 14.Hirschmann MT, Adler T, Rasch H, Hügli RW, Friederich NF, Arnold MP. Painful knee joint after ACL reconstruction using biodegradable interference screws- SPECT/CT a valuable diagnostic tool? A case report. Sports Med Arthrosc Rehabil Ther Technol. 2010;2(24).Google Scholar
- 18.Hirschmann MT, Iranpour F, Konala P, Kerner A, Rasch H, Cobb JP, et al. A novel standardized algorithm for evaluating patients with painful total knee arthroplasty using combined single photon emission tomography and conventional computerized tomography. Knee Surg Sports Traumatol Arthrosc. 2010;18:939–44.CrossRefPubMedGoogle Scholar
- 20.Hirschmann MT, Konala P, Iranpour F, Kerner A, Rasch H, Friederich NF. Clinical value of SPECT/CT for evaluation of patients with painful knees after total knee arthroplasty--a new dimension of diagnostics?. BMC Musculoskelet Disord. 2011;12(36).Google Scholar
- 21.Hirschmann MT, Mathis D, Afifi FK, Rasch H, Henckel J, Amsler F, et al. Single photon emission computerized tomography and conventional computerized tomography (SPECT/CT) for evaluation of patients after anterior cruciate ligament reconstruction: a novel standardized algorithm combining mechanical and metabolic information. Knee Surg Sports Traumatol Arthrosc. 2013;21:965–74.CrossRefPubMedGoogle Scholar
- 24.Hirschmann MT, Wagner CR, Rasch H, Henckel J. Standardized volumetric 3D–analysis of SPECT/CT imaging in orthopaedics: overcoming the limitations of qualitative 2D analysis. BMC Med Imaging. 12(5).Google Scholar
- 30.Mucha A, Dordevic M, Testa EA, Rasch H, Hirschmann MT. Assessment of the loading history of patients after high tibial osteotomy using SPECT/CT-a new diagnostic tool and algorithm. J Orthop Surg Res. 2013;8(46).Google Scholar
- 31.Rasch H, Falkowski AL, Forrer F, Henckel J, Hirschmann MT. 4D-SPECT/CT in orthopaedics: a new method of combined quantitative volumetric 3D analysis of SPECT/CT tracer uptake and component position measurements in patients after total knee arthroplasty. Skelet Radiol. 2013;42:1215–23.CrossRefGoogle Scholar
- 34.Suter B, Testa E, Stämpfli P, Konala P, Rasch H, Friederich NF et al. A novel standardized algorithm using SPECT/CT evaluating unhappy patients after unicondylar knee arthroplasty-a combined analysis of tracer uptake distribution and component position. BMC Med Imaging. 2015;15(11).Google Scholar
- 38.Dobrindt O, Amthauer H, Krueger A, Ruf J, Wissel H, Grosser OS et al. Hybrid SPECT/CT for the assessment of a painful hip after uncemented total hip arthroplasty. BMC Med Imaging. 2015;15(18).Google Scholar