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Richter A, Stukenborg-Colsman C, Plaass C. SPECT/CT of Total Ankle Arthroplasty. Clin Podiatr Med Surg 2024; 41:649-663. [PMID: 39237177 DOI: 10.1016/j.cpm.2024.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2024]
Abstract
Use of SPECT/CT (Single Photon Emission Computed Tomography/Computed Tomography) is increasing providing additional information in patients with inconclusive clinical examination and unremarkable imaging findings presenting with chronic pain after total ankle arthroplasty. To differentiate the cause of pain after total ankle arthroplasty can be challenging. SPECT/CT combines structural and metabolic imaging as a hybrid tool leading to higher specificity and overall diagnostic accuracy presumably in cases of gutter impingement, prosthetic loosening, and osteoarthritis of adjacent joints. Moreover, SPECT/CT can complement diagnostic work up in periprosthetic joint infections. Basal tracer enhancement has to be considered for the interpretation of imaging findings.
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Affiliation(s)
- Alena Richter
- Department for Foot and Ankle surgery, DIAKOVERE Annastift, Orthopedic Clinic of the Hannover Medical School, Anna-von-Borries Strasse 1-7, Hannover 30625, Germany
| | - Christina Stukenborg-Colsman
- Department for Foot and Ankle surgery, DIAKOVERE Annastift, Orthopedic Clinic of the Hannover Medical School, Anna-von-Borries Strasse 1-7, Hannover 30625, Germany
| | - Christian Plaass
- Department for Foot and Ankle surgery, DIAKOVERE Annastift, Orthopedic Clinic of the Hannover Medical School, Anna-von-Borries Strasse 1-7, Hannover 30625, Germany.
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Richter A, Stukenborg-Colsman C, Plaass C. SPECT/CT of Total Ankle Arthroplasty. Foot Ankle Clin 2023; 28:493-507. [PMID: 37536815 DOI: 10.1016/j.fcl.2023.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Use of SPECT/CT (Single Photon Emission Computed Tomography/Computed Tomography) is increasing providing additional information in patients with inconclusive clinical examination and unremarkable imaging findings presenting with chronic pain after total ankle arthroplasty. To differentiate the cause of pain after total ankle arthroplasty can be challenging. SPECT/CT combines structural and metabolic imaging as a hybrid tool leading to higher specificity and overall diagnostic accuracy presumably in cases of gutter impingement, prosthetic loosening, and osteoarthritis of adjacent joints. Moreover, SPECT/CT can complement diagnostic work up in periprosthetic joint infections. Basal tracer enhancement has to be considered for the interpretation of imaging findings.
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Affiliation(s)
- Alena Richter
- Department for Foot and Ankle surgery, DIAKOVERE Annastift, Orthopedic Clinic of the Hannover Medical School, Anna-von-Borries Strasse 1-7, Hannover 30625, Germany
| | - Christina Stukenborg-Colsman
- Department for Foot and Ankle surgery, DIAKOVERE Annastift, Orthopedic Clinic of the Hannover Medical School, Anna-von-Borries Strasse 1-7, Hannover 30625, Germany
| | - Christian Plaass
- Department for Foot and Ankle surgery, DIAKOVERE Annastift, Orthopedic Clinic of the Hannover Medical School, Anna-von-Borries Strasse 1-7, Hannover 30625, Germany.
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Hothi H, Cerquiglini A, Büel L, Henckel J, Moser LB, Hirschmann MT, Hart A. SPECT/CT Assessment of In-Vivo Loading of the Knee Correlates with Polyethylene Deformation in Retrieved Total Knee Arthroplasty. Tomography 2022; 8:180-188. [PMID: 35076625 PMCID: PMC8788541 DOI: 10.3390/tomography8010015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/18/2021] [Accepted: 01/02/2022] [Indexed: 11/16/2022] Open
Abstract
Background: SPECT/CT distribution patterns in patients with total knee replacements have previously been correlated with factors such as time of implantation, implant type and alignment. It is unknown, however, if an increased and more extended bone tracer uptake (BTU) in SPECT/CT, representing loading of the joint, correlates with findings from retrieval studies. The aim of this study was to further understand this subject. Materials and Methods: 62 retrieved TKA were included. SPECT/CT was performed prior to revision. Quantitative and qualitative medio-lateral comparisons of BTU intensity and distribution in the tibia were performed. Retrieval analysis was performed with a micro-CT method to assess the thickness differences between medial and lateral sides of polyethylene inserts with symmetrical designs. Results: In the subgroup of TKA with asymmetrical SPECT/CT distribution, there was a significant correlation between retrieval and medical imaging data (p = 0.0355): patients showing a more extended BTU in the medial compartment also had a significantly thinner insert in the medial compartment, and vice versa in the lateral side. Conclusion: This is the first study comparing BTU distribution patterns and retrieval findings. Our results support the hypothesis that SPECT/CT is able to identify bone activity due to implant position and loading.
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Affiliation(s)
- Harry Hothi
- The Royal National Orthopaedic Hospital, Stanmore HA7 4LP, UK; (A.C.); (J.H.); (A.H.)
- Correspondence:
| | - Arianna Cerquiglini
- The Royal National Orthopaedic Hospital, Stanmore HA7 4LP, UK; (A.C.); (J.H.); (A.H.)
| | - Lukas Büel
- Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland (Bruderholz, Liestal, Laufen), 4101 Bruderholz, Switzerland; (L.B.); (L.B.M.); (M.T.H.)
- Department of Orthopaedics, University of Basel, 4001 Basel, Switzerland
| | - Johann Henckel
- The Royal National Orthopaedic Hospital, Stanmore HA7 4LP, UK; (A.C.); (J.H.); (A.H.)
| | - Lukas B. Moser
- Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland (Bruderholz, Liestal, Laufen), 4101 Bruderholz, Switzerland; (L.B.); (L.B.M.); (M.T.H.)
| | - Michael T. Hirschmann
- Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland (Bruderholz, Liestal, Laufen), 4101 Bruderholz, Switzerland; (L.B.); (L.B.M.); (M.T.H.)
| | - Alister Hart
- The Royal National Orthopaedic Hospital, Stanmore HA7 4LP, UK; (A.C.); (J.H.); (A.H.)
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Gamma camera imaging (bone scan) in orthopedics: Foot, ankle, knees, and hip. Nucl Med Mol Imaging 2022. [DOI: 10.1016/b978-0-12-822960-6.00214-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Beckers L, Dandois F, Ooms D, Berger P, Van Laere K, Scheys L, Vandenneucker H. Assessment of in vivo bone activity patterns in medial mobile-bearing unicompartmental knee arthroplasty : a prospective SPECT/CT study. Bone Joint J 2022; 104-B:34-44. [PMID: 34969270 DOI: 10.1302/0301-620x.104b1.bjj-2021-0121.r2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AIMS Higher osteoblastic bone activity is expected in aseptic loosening and painful unicompartmental knee arthroplasty (UKA). However, insights into normal bone activity patterns after medial UKAs are lacking. The aim of this study was to identify the evolution in bone activity pattern in well-functioning medial mobile-bearing UKAs. METHODS In total, 34 patients (13 female, 21 male; mean age 62 years (41 to 79); BMI 29.7 kg/m2 (23.6 to 42.1)) with 38 medial Oxford partial UKAs (20 left, 18 right; 19 cementless, 14 cemented, and five hybrid) were prospectively followed with sequential 99mTc-hydroxymethane diphosphonate single photon emission CT (SPECT)/CT preoperatively, and at one and two years postoperatively. Changes in mean osteoblastic activity were investigated using a tracer localization scheme with volumes of interest (VOIs), reported by normalized mean tracer values. A SPECT/CT registration platform additionally explored cortical tracer evolution in zones of interest identified by previous experimental research. RESULTS Significant reduction of tracer activity from the preoperative situation was found in femoral and anteromedial tibial VOIs adjacent to the UKA components. Temporarily increased osteoblastic bone activity was observed in VOIs comprising the UKA keel structure at one year postoperatively compared to the preoperative activity. Persistent higher tracer uptake was found in the posterior tibial cortex at final follow-up. Multivariate analysis showed no statistical difference in osteoblastic bone activity underneath cemented or cementless components. CONCLUSION Well-functioning medial mobile-bearing UKAs showed distinct changes in patterns of normalized bone tracer activity in the different VOIs adjacent to the prosthetic components, regardless of their type of fixation. Compared to the preoperative situation, persistent high bone activity was found underneath the keel and the posterior tibial cortex at final follow-up, with significant reduced activity only being identified in femoral and anteromedial tibial VOIs. Cite this article: Bone Joint J 2022;104-B(1):34-44.
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Affiliation(s)
- Lucas Beckers
- KULeuven/University Hospitals Leuven, Institute for Orthopaedic Research and Training (IORT), Leuven, Belgium
| | - Félix Dandois
- KULeuven/University Hospitals Leuven, Institute for Orthopaedic Research and Training (IORT), Leuven, Belgium
| | - Dirk Ooms
- Department of Nuclear Medicine and Molecular Imaging, Katholieke Universiteit Leuven Universitaire Ziekenhuizen Leuven, Leuven, Belgium.,Department of Nuclear Medicine, OLV Ziekenhuis Campus Aalst, Aalst, Belgium
| | - Pieter Berger
- KULeuven/University Hospitals Leuven, Institute for Orthopaedic Research and Training (IORT), Leuven, Belgium
| | - Koen Van Laere
- Department of Nuclear Medicine and Molecular Imaging, Katholieke Universiteit Leuven Universitaire Ziekenhuizen Leuven, Leuven, Belgium
| | - Lennart Scheys
- KULeuven/University Hospitals Leuven, Institute for Orthopaedic Research and Training (IORT), Leuven, Belgium
| | - Hilde Vandenneucker
- KULeuven/University Hospitals Leuven, Institute for Orthopaedic Research and Training (IORT), Leuven, Belgium
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Murer AM, Hirschmann MT, Amsler F, Rasch H, Huegli RW. Bone SPECT/CT has excellent sensitivity and specificity for diagnosis of loosening and patellofemoral problems after total knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 2020; 28:1029-1035. [PMID: 31263926 DOI: 10.1007/s00167-019-05609-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 06/26/2019] [Indexed: 12/31/2022]
Abstract
PURPOSE The primary purpose of this retrospective study with prospectively collected data was to evaluate the clinical value of SPECT/CT, in particular its impact on clinical diagnosis and patient management, in patients with pain, stiffness, or swelling after primary total knee arthroplasty (TKA). The secondary purpose was to determine the sensitivity and the specificity of SPECT/CT for different pathologies such as loosening and patellofemoral overloading. METHODS A retrospective analysis was carried out on 214 knees in 202 consecutive patients (mean age 69 ± 11 years) with persistent or recurrent knee pain after TKA. All patients underwent clinical examination, standardised radiographs, and 99mTc-hydroxymethane diphosphonate (HDP) SPECT/CT as part of a routine diagnostic algorithm. The diagnoses before and after SPECT/CT and final treatment were recorded. TKA component position was routinely measured on 3D-reconstructed images. Intensity and anatomical distribution of bone tracer uptake were determined. RESULTS SPECT/CT changed the clinical diagnosis and final treatment in 139/214 (65%) knees. In 117 (54.7%) out of 214 patients, revision surgery was proposed following SPECT/CT. Early onset of pain was significantly (p = 0.011) correlated with tibiofemoral stress pattern in SPECT/CT. A total of 86 knees (40.2%) were surgically revised using semi-constrained or fully constrained TKA. In 35 patients, a secondary patellar resurfacing was performed. SPECT/CT showed the clinical diagnosis to be incorrect for suspicion of tibial component loosening in 56 patients (26.2%), femoral component loosening in 53 patients (24.8%), and patellofemoral overloading/progressive patellofemoral osteoarthritis in 26 patients (12.1%) and provided different underlying causes of persistent knee pain after TKA. Likewise, SPECT/CT identified tibial component loosening in 8 patients (3.7%), femoral component loosening in 4 patients (1.9%), and patellofemoral OA in 71 patients (33.2%) without prior clinical suspected diagnosis. The sensitivity and specificity of SPECT/CT for detection of patellofemoral OA was 96.5% and 96.2%, respectively. The sensitivity and specificity for detection of tibial component loosening was 96.0% and 100%, respectively. The sensitivity and specificity for detection of femoral component loosening was 95.0% and 100%, respectively. CONCLUSION The diagnostic benefits of SPECT/CT in the challenging and complex cohort of patients with pain after primary TKA have been proven. The excellent sensitivity and specificity for detection of tibial or femoral component loosening and diagnosis of patellofemoral OA have been surgically confirmed. Due to the benefits in establishing the correct diagnosis, SPECT/CT should be implemented as part of the routine diagnostic algorithm for patients with pain after primary TKA. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Andreas M Murer
- Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland (Bruderholz, Liestal, Laufen), 4101, Bruderholz, Switzerland
- University of Basel, Basel, Switzerland
| | - Michael T Hirschmann
- Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland (Bruderholz, Liestal, Laufen), 4101, Bruderholz, Switzerland.
- University of Basel, Basel, Switzerland.
| | | | - Helmut Rasch
- Institute of Radiology and Nuclear Medicine, Kantonsspital Baselland, 4101, Bruderholz, Switzerland
| | - Rolf W Huegli
- Institute of Radiology and Nuclear Medicine, Kantonsspital Baselland, 4101, Bruderholz, Switzerland
- University of Basel, Basel, Switzerland
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SCreg: a registration-based platform to compare unicondylar knee arthroplasty SPECT/CT scans. BMC Musculoskelet Disord 2020; 21:162. [PMID: 32164663 PMCID: PMC7066757 DOI: 10.1186/s12891-020-3185-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 03/03/2020] [Indexed: 11/11/2022] Open
Abstract
Background A combination of conventional computed tomography and single photon emitted computed tomography (SPECT/CT) provides simultaneous data on the intensity and location of osteoblastic activity. Currently, since SPECT/CT scans are not spatially aligned, scans following knee arthroplasty are compared by extracting average and maximal values of osteoblastic activity intensity from large subregions of the structure of interest, which leads to a loss of resolution, and hence, information. Therefore, this paper describes the SPECT/CT registration platform (SCreg) based on the principle of image registration to spatially align SPECT/CT scans following unicondylar knee arthroplasty (UKA) and allow full resolution intra-subject and inter-subject comparisons. Methods SPECT-CT scans of 20 patients were acquired before and 1 year after UKA. Firstly, scans were pre-processed to account for differences in voxel sizes and divided in volumes of interest. This was followed by optimization of registration parameters according to their volumetric agreement, and alignment using a combination of rigid, affine and non-rigid registration. Finally, radiotracer uptakes were normalized, and differences between pre-operative and post-operative activity were computed for each voxel. Wilcoxon signed rank sum test was performed to compare Dice similarity coefficients pre- and post-registration. Results Qualitative and quantitative validation of the platform assessing the correct alignment of SPECT/CT scans resulted in Dice similarity coefficient values over 80% and distances between predefined anatomical landmarks below the fixed threshold of (2;2;0) voxels. Locations of increased and decreased osteoblastic activity obtained during comparisons of osteoblastic activity before and after UKA were mainly consistent with literature. Conclusions Thus, a full resolution comparison performed on the platform could assist surgeons and engineers in optimizing surgical parameters in view of bone remodeling, thereby improving UKA survivorship.
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Beckers L, Ooms D, Berger P, Van Laere K, Scheys L, Vandenneucker H. Reduced bone activity in the native compartments after medial mobile-bearing unicompartmental knee arthroplasty. A prospective SPECT/CT study. Bone Joint J 2019; 101-B:915-921. [PMID: 31362550 DOI: 10.1302/0301-620x.101b8.bjj-2018-1569.r1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AIMS Altered alignment and biomechanics are thought to contribute to the progression of osteoarthritis (OA) in the native compartments after medial unicompartmental knee arthroplasty (UKA). The aim of this study was to evaluate the bone activity and remodelling in the lateral tibiofemoral and patellofemoral compartment after medial mobile-bearing UKA. PATIENTS AND METHODS In total, 24 patients (nine female, 15 male) with 25 medial Oxford UKAs (13 left, 12 right) were prospectively followed with sequential 99mTc-hydroxymethane diphosphonate single photon emission CT (SPECT)/CT preoperatively and at one and two years postoperatively, along with standard radiographs and clinical outcome scores. The mean patient age was 62 years (40 to 78) and the mean body mass index (BMI) was 29.7 kg/m2 (23.6 to 42.2). Mean osteoblastic activity was evaluated using a tracer localization scheme with volumes of interest (VOIs). Normalized mean tracer values were calculated as the ratio between the mean tracer activity in a VOI and background activity in the femoral diaphysis. RESULTS Significant reduction of normalized tracer activity was observed one year postoperatively in tibial and femoral VOIs adjacent to the joint line in the lateral compartment. Patellar VOIs and remaining femoral VOIs demonstrated a significant, diminished normalized tracer activity at final follow-up. CONCLUSION The osteoblastic bone activity in the native compartments decreased significantly after treatment of medial end-stage OA with a UKA, implying reduced stress to the subchondral bone in the retained compartments after a UKA. Cite this article: Bone Joint J 2019;101-B:915-921.
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Affiliation(s)
- L Beckers
- KULeuven/University Hospitals Leuven, Institute for Orthopaedic Research and Training (IORT), UZLeuven, Leuven, Belgium
| | - D Ooms
- KULeuven/University Hospitals Leuven, Department of Nuclear Medicine and Molecular Imaging, UZLeuven, Leuven, Belgium
| | - P Berger
- KULeuven/University Hospitals Leuven, Institute for Orthopaedic Research and Training (IORT), UZLeuven, Leuven, Belgium
| | - K Van Laere
- KULeuven/University Hospitals Leuven, Department of Nuclear Medicine and Molecular Imaging, UZLeuven, Leuven, Belgium
| | - L Scheys
- KULeuven/University Hospitals Leuven, Institute for Orthopaedic Research and Training (IORT), UZLeuven, Leuven, Belgium
| | - H Vandenneucker
- KULeuven/University Hospitals Leuven, Institute for Orthopaedic Research and Training (IORT), UZLeuven, Leuven, Belgium
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Distribution of bone tracer uptake in symptomatic knees after ACL reconstruction compared to asymptomatic non-operated knees: a method for better differentiating patient-specific from disease-specific bone tracer uptake in SPECT/CT. Ann Nucl Med 2019; 33:201-210. [PMID: 30604402 DOI: 10.1007/s12149-018-01324-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 12/16/2018] [Indexed: 10/27/2022]
Abstract
OBJECTIVE To evaluate the differences of bone tracer uptake (BTU) in symptomatic and asymptomatic contralateral knees in patients after reconstruction of the anterior cruciate ligament (ACL-R) and to identify typical BTU patterns and threshold values to differentiate pathological from physiological BTU. METHODS 53 patients after unilateral ACL-R were retrospectively included in the study. The population was subdivided into a group of symptomatic operated knees and a group of contralateral asymptomatic non-operated knees. BTU was measured in SPECT/CT using a validated anatomical localization-scheme and normalized mean BTU values were calculated in both knees. Wilcoxon signed rank-test and Pearson's rank-correlation coefficient were used (p < 0.05). RESULTS Symptomatic knees after ACL-R showed significantly more BTU than asymptomatic ones (p < 0.01).Based on the measured BTU activity in SPECT/CT in symptomatic operated and asymptomatic non-operated knees, intensity thresholds of pathological BTU were established. A BTU threshold of greater than the Median + 1 SD of the asymptomatic non-operated knee was defined as pathological. In both groups the highest mean BTU was found on the femoral, tibial and patellar articular surfaces, the lowest BTU in femoral and tibial regions far from the joint. CONCLUSIONS The established BTU thresholds for SPECT/CT in knees after ACL-R help to differentiate disease-specific from patient-specific BTU. It could be speculated that BTU in asymptomatic knees equates to the preoperative condition of the knee joint before ACL-R. Therefore, the results of this study help to understand in-vivo loading of the knee and ultimately lead to prediction of development of osteoarthritis in an early stage.
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van der Bruggen W, Hirschmann MT, Strobel K, Kampen WU, Kuwert T, Gnanasegaran G, Van den Wyngaert T, Paycha F. SPECT/CT in the Postoperative Painful Knee. Semin Nucl Med 2018; 48:439-453. [PMID: 30193650 DOI: 10.1053/j.semnuclmed.2018.05.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This review summarizes the role of SPECT/CT in patients with a painful postoperative knee and describes typical diagnostic criteria in these patients. Pain after knee surgery is common and is influenced by the underlying pathology, the type of surgery, and the patient. Knee joint-preserving surgery includes osteotomy, ligament reconstruction, meniscus surgery, and cartilage repair procedures, often used in combination. Knee arthroplasty procedures consist of unicondylar, patellofemoral, and primary or revision total knee prosthesis. In patients with pain after knee joint-preserving surgery, MRI remains the reference standard. After ligament reconstruction, CT can evaluate postoperative tunnel positioning, and bone SPECT/CT can contribute by assessing overloading or biodegradation problems. After meniscal or cartilage surgery, SPECT/CT can be particularly helpful to identify compartment overloading or nonhealing chondral or osteochondral lesions as cause of pain. SPECT/CT arthrography can assess cartilage damage at an early stage due to altered biomechanical forces. After corrective osteotomy of the knee, SPECT/CT can reveal complications such as overloading, nonunion, or patellofemoral problems. After arthroplasty, conventional radiographs lack both sensitivity to detect aseptic loosening and specificity in differentiating aseptic from infectious loosening. Secondly, hardware-induced artifacts still hamper CT and MRI, despite improving and increasingly available metal artifact reduction techniques. Bone scintigraphy is a proven useful adjunct to conventional radiography and MRI to reveal the pain generator and is less hampered by artifacts from metallic implants compared with CT and MRI. Nevertheless, the optimal imaging strategy in evaluating complications after knee arthroplasty is still a matter of debate. Although the evidence of the use of BS SPECT/CT is still limited, it is growing steadily. In particular, recent data on specific uptake patterns in tibial and femoral zones after total knee arthroplasty and the impact of integrating biomechanics into the assessment of SPECT/CT appear promising, but more research is needed.
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Affiliation(s)
- Wouter van der Bruggen
- Department of Radiology and Nuclear Medicine, Slingeland Hospital, Doetinchem, The Netherlands..
| | - Michael T Hirschmann
- Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland (Bruderholz, Liestal, Laufen), Bruderholz, Switzerland
| | - Klaus Strobel
- Department of Radiology and Nuclear Medicine, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | | | - Torsten Kuwert
- Clinic of Nuclear Medicine, University Hospital Erlangen, Erlangen, Germany
| | - Gopinath Gnanasegaran
- Department of Nuclear Medicine, Royal Free London NHS Foundation Trust, London, United Kingdom
| | - Tim Van den Wyngaert
- Department of Nuclear Medicine, Antwerp University Hospital, Edegem, Belgium.; Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium
| | - Frédéric Paycha
- Department of Nuclear Medicine, Hôpital Lariboisière, Assistance Publique-Hôpitaux de Paris, Paris, France
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Schweizer T, Schiapparelli FF, Rotigliano N, Rasch H, Amsler F, Hirschmann MT. Patterns of bone tracer uptake on SPECT-CT in symptomatic and asymptomatic patients with primary total hip arthroplasty. Eur J Nucl Med Mol Imaging 2017; 45:283-291. [DOI: 10.1007/s00259-017-3827-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 09/03/2017] [Indexed: 11/25/2022]
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Barthassat E, Afifi F, Konala P, Rasch H, Hirschmann MT. Evaluation of patients with painful total hip arthroplasty using combined single photon emission tomography and conventional computerized tomography (SPECT/CT) - a comparison of semi-quantitative versus 3D volumetric quantitative measurements. BMC Med Imaging 2017; 17:31. [PMID: 28482817 PMCID: PMC5422986 DOI: 10.1186/s12880-017-0204-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 05/02/2017] [Indexed: 11/10/2022] Open
Abstract
Background It was the primary purpose of our study to evaluate the inter- and intra-observer reliability of a standardized SPECT/CT algorithm for evaluating patients with painful primary total hip arthroplasty (THA). The secondary purpose was a comparison of semi-quantitative and 3D volumetric quantification method for assessment of bone tracer uptake (BTU) in those patients. Methods A novel SPECT/CT localization scheme consisting of 14 femoral and 4 acetabular regions on standardized axial and coronal slices was introduced and evaluated in terms of inter- and intra-observer reliability in 37 consecutive patients with hip pain after THA. BTU for each anatomical region was assessed semi-quantitatively using a color-coded Likert type scale (0-10) and volumetrically quantified using a validated software. Two observers interpreted the SPECT/CT findings in all patients two times with six weeks interval between interpretations in random order. Semi-quantitative and quantitative measurements were compared in terms of reliability. In addition, the values were correlated using Pearson`s correlation. A factorial cluster analysis of BTU was performed to identify clinically relevant regions, which should be grouped and analysed together. Results The localization scheme showed high inter- and intra-observer reliabilities for all femoral and acetabular regions independent of the measurement method used (semiquantitative versus 3D volumetric quantitative measurements). A high to moderate correlation between both measurement methods was shown for the distal femur, the proximal femur and the acetabular cup. The factorial cluster analysis showed that the anatomical regions might be summarized into three distinct anatomical regions. These were the proximal femur, the distal femur and the acetabular cup region. Conclusions The SPECT/CT algorithm for assessment of patients with pain after THA is highly reliable independent from the measurement method used. Three clinically relevant anatomical regions (proximal femoral, distal femoral, acetabular) were identified.
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Affiliation(s)
- Emilienne Barthassat
- Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland Bruderholz, Liestal, Laufen, Switzerland.,Basel University, Basel, Switzerland
| | - Faik Afifi
- Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland Bruderholz, Liestal, Laufen, Switzerland
| | - Praveen Konala
- Fellow- Musculoskeletal Radiology, The Robert Jones and Agnes Hunt Orthopaedic Hospital NHS Foundation Trust, Oswestry, UK
| | - Helmut Rasch
- Institute for Radiology and Nuclear Medicine, Kantonsspital Baselland-Bruderholz, Bruderholz, Switzerland
| | - Michael T Hirschmann
- Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland Bruderholz, Liestal, Laufen, Switzerland. .,Basel University, Basel, Switzerland.
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