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Parratte S, Azmi Z, Daxelet J, Argenson JN, Batailler C. Specific tibial landmarks to improve to accuracy of the tibial cut during total knee arthroplasty. A case control study. Arch Orthop Trauma Surg 2024:10.1007/s00402-024-05428-w. [PMID: 38967776 DOI: 10.1007/s00402-024-05428-w] [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] [Received: 12/28/2023] [Accepted: 06/26/2024] [Indexed: 07/06/2024]
Abstract
INTRODUCTION More personalized alignment techniques in total knee arthroplasty (TKA) have recently been described particularly for the young and active patients. Performing the ideal tibial cut might be challenging with a conventional ancillary. Therefore the aims of this study were: (1) to describe specific tibial landmarks to optimize the tibial cut in TKA; (2) to compare the accuracy of the tibial cut with these landmarks compared to a conventional technique. METHODS This retrospective case-control study compared primary TKAs performed using a conventional technique with extramedullary guide associated with specific tibial landmarks. For each case, one control patient was matched based on body mass index (BMI), age, preoperative Hip Knee Ankle (HKA) angle, and Medial Proximal Tibial Angle (MPTA). All control patients were operated by the same surgeon and similar conventional technique but without landmarks. The MPTA target was to reproduce preoperative deformity with a 3° of varus limit. 34 TKA were included in each group. There was no preoperative difference between both groups. Mean age was 63 years old ± 8. Mean BMI was 32 kg/m2 ± 5. Mean HKA was 170.6° ± 2.5. Mean MPTA was 85.1° ± 2.3. The radiographic assessment was performed preoperatively and at 2 months: HKA, mechanical Medial Distal Femoral Angle (mMDFA), MPTA, tibial slope, restoration of the joint line-height. RESULTS The tibial landmarks corresponded to the line of insertion of the deep medial collateral ligament fibers extended to the capsular insertion above the Gerdy tubercle. The postoperative MPTA was significantly more varus (87.2° ± 1.6 in landmark group versus 88.3° ± 2.2; p = 0.027) and closer to preoperative bone deformity in landmark group (p = 0.002) with significantly less outliers than in the conventional group. There was no significant difference between both groups postoperatively for HKA (175.4° ± 2.3 versus 175.9° ± 2.5; p = 0.42); mMDFA (88.9° ± 2.3 versus 88.2° ± 2.1; p = 0.18); tibial slope (82.6° ± 1.9 versus 82.4° ± 2.6; p = 0.67), the restoration of the joint line-height (1.5 mm ± 2 versus 1.8 mm ± 2; p = 0.56). CONCLUSION Specific tibial landmarks during TKA can be used to increase the accuracy of the tibial cut when using personalized alignment techniques in TKA. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Sébastien Parratte
- International Knee and Joint Centre, Hazza Bin Zayed St., P.O. Box 46,705, Abu Dhabi, United Arab Emirates.
- Department of Orthopaedics and Traumatology, Aix Marseille University, APHM, CNRS, ISM, Sainte-Marguerite Hospital, Institute for Locomotion, Marseille, France.
| | - Zakee Azmi
- International Knee and Joint Centre, Hazza Bin Zayed St., P.O. Box 46,705, Abu Dhabi, United Arab Emirates
| | - Jeremy Daxelet
- Department of Orthopaedic Surgery, Clinique Saint-Luc Bouge, Rue Saint-Luc 8, 5004, Namur, Belgium
| | - Jean-Noël Argenson
- Department of Orthopaedics and Traumatology, Aix Marseille University, APHM, CNRS, ISM, Sainte-Marguerite Hospital, Institute for Locomotion, Marseille, France
| | - Cécile Batailler
- Department of Orthopaedics, Croix Rousse Hospital, University of Lyon 1, 69,004, Lyon, France
- Claude Bernard Lyon 1 University, LBMC UMR_T9406, 69,100, Lyon, France
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Jang SJ, Kunze KN, Brilliant ZR, Henson M, Mayman DJ, Jerabek SA, Vigdorchik JM, Sculco PK. Comparison of tibial alignment parameters based on clinically relevant anatomical landmarks : a deep learning radiological analysis. Bone Jt Open 2022; 3:767-776. [PMID: 36196596 PMCID: PMC9626868 DOI: 10.1302/2633-1462.310.bjo-2022-0082.r1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
AIMS Accurate identification of the ankle joint centre is critical for estimating tibial coronal alignment in total knee arthroplasty (TKA). The purpose of the current study was to leverage artificial intelligence (AI) to determine the accuracy and effect of using different radiological anatomical landmarks to quantify mechanical alignment in relation to a traditionally defined radiological ankle centre. METHODS Patients with full-limb radiographs from the Osteoarthritis Initiative were included. A sub-cohort of 250 radiographs were annotated for landmarks relevant to knee alignment and used to train a deep learning (U-Net) workflow for angle calculation on the entire database. The radiological ankle centre was defined as the midpoint of the superior talus edge/tibial plafond. Knee alignment (hip-knee-ankle angle) was compared against 1) midpoint of the most prominent malleoli points, 2) midpoint of the soft-tissue overlying malleoli, and 3) midpoint of the soft-tissue sulcus above the malleoli. RESULTS A total of 932 bilateral full-limb radiographs (1,864 knees) were measured at a rate of 20.63 seconds/image. The knee alignment using the radiological ankle centre was accurate against ground truth radiologist measurements (inter-class correlation coefficient (ICC) = 0.99 (0.98 to 0.99)). Compared to the radiological ankle centre, the mean midpoint of the malleoli was 2.3 mm (SD 1.3) lateral and 5.2 mm (SD 2.4) distal, shifting alignment by 0.34o (SD 2.4o) valgus, whereas the midpoint of the soft-tissue sulcus was 4.69 mm (SD 3.55) lateral and 32.4 mm (SD 12.4) proximal, shifting alignment by 0.65o (SD 0.55o) valgus. On the intermalleolar line, measuring a point at 46% (SD 2%) of the intermalleolar width from the medial malleoli (2.38 mm medial adjustment from midpoint) resulted in knee alignment identical to using the radiological ankle centre. CONCLUSION The current study leveraged AI to create a consistent and objective model that can estimate patient-specific adjustments necessary for optimal landmark usage in extramedullary and computer-guided navigation for tibial coronal alignment to match radiological planning.Cite this article: Bone Jt Open 2022;3(10):767-776.
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Affiliation(s)
- Seong J. Jang
- Weill Cornell Medical College, New York, New York, USA,Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York, USA,Correspondence should be sent to Seong Jun Jang. E-mail:
| | - Kyle N. Kunze
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York, USA
| | - Zachary R. Brilliant
- Adult Reconstruction and Joint Replacement Service, Hospital for Special Surgery, New York, New York, USA,University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Melissa Henson
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York, USA
| | - David J. Mayman
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York, USA,Adult Reconstruction and Joint Replacement Service, Hospital for Special Surgery, New York, New York, USA
| | - Seth A. Jerabek
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York, USA,Adult Reconstruction and Joint Replacement Service, Hospital for Special Surgery, New York, New York, USA
| | - Jonathan M. Vigdorchik
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York, USA,Adult Reconstruction and Joint Replacement Service, Hospital for Special Surgery, New York, New York, USA
| | - Peter K. Sculco
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York, USA,Adult Reconstruction and Joint Replacement Service, Hospital for Special Surgery, New York, New York, USA
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