Characteristics of femorotibial joint geometry in the trochlear dysplastic femur

Frosch, Stephan; Brodkorb, Tobias; Schüttrumpf, Jan Philipp; Wachowski, Martin Michael; Walde, Tim Alexander; Stürmer, K. M.; Balcarek, Peter

doi:10.1111/joa.12214

Cited by 9 publications

(4 citation statements)

References 22 publications

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“…Frosch et al found a positive correlation between the medial femoral condylar offset and the medial tibial slope. A greater medial tibial slope indicates a larger offset of the medial femoral condyle, in patients with TD [10]. These data support the results of the present study, which shows a correlation between the AP length of the medial condyle and TD.…”

Section: Discussionsupporting

confidence: 92%

Short lateral posterior condyle is associated with trochlea dysplasia and patellar dislocation

Roger

Lustig

Cerciello

et al. 2018

Knee Surg Sports Traumatol Arthrosc

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Section: Discussionsupporting

confidence: 92%

Short lateral posterior condyle is associated with trochlea dysplasia and patellar dislocation

Roger

Lustig

Cerciello

et al. 2018

Knee Surg Sports Traumatol Arthrosc

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“…The morphology of the distal femur is complex [1][2][3][4]. Various studies showed that medial and lateral femoral condyle morphology differ in ACO, PCO and length [23][24][25][26]. In this context, the current literature raises the question of whether the existing standard implants for arthroplasty of the knee joint adequately consider the physiological morphology of femoral condyles [11][12][13].…”

Section: Discussionmentioning

confidence: 99%

Physiological Femoral Condylar Morphology in Adult Knees—A MRI Study of 517 Patients

et al. 2023

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Background: In the age of individualised arthroplasty, the question arises whether currently available standard implants adequately consider femoral condylar morphology (FCM). Therefore, physiological reference values of FCM are needed. The aim was to establish physiological reference values for anterior (ACO) and posterior condylar offset (PCO) as well as for the length of the medial (LMC) and lateral femoral condyles (LLC). Methods: The knee joints of 517 patients (mean age: 52.3 years (±16.8)) were analysed retrospectively using MRI images. Medial (med) and lateral (lat) ACO and PCO, as well as LMC and LLC, were measured. All FCM parameters were examined for association with age, gender, side and osteoarthritis. Results: Mean ACOmed was 2.8 mm (±2.5), mean ACOlat was 6.7 mm (±2.3), mean PCOmed was 25.7 mm (±4.6), mean PCOlat was 23.6 mm (±3.0), mean LMC was 63.7 mm (±5.0) and mean LLC was 64.4 mm (±5.0). Except for PCOmed, the mean values of all other FCM parameters were significantly higher in male knees compared to female knees. ACOmed and PCOmed showed significant side-specific differences. There were no significant differences in relation to age and osteoarthritis. Conclusion: The study showed significant differences in FCM side- and gender-specifically in adult knees. These aspects should be considered in the discussion of individual and gender-specific knee joint replacement.

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“…A case–control study of 186 knees (98 TD vs 88 controls) demonstrated a positive correlation between the medial femoral condylar offset and the medial tibial slope in trochlear dysplastic knees. A greater degree of the medial tibial slope indicated a larger offset of the medial femoral condyle [13]. A study that analysed the ratio of the tibial tuberosity–trochlear groove distance (TT‐TG) to the tibial maximal mediolateral axis in trochlear dysplastic knees reported no difference in ML width of the tibial plateau between trochlear dysplastic and normal knees [6].…”

Section: Discussionmentioning

confidence: 99%

A landmark-based 3D analysis reveals a narrower tibial plateau and patella in trochlear dysplastic knees

Peeters

Haver

Wyngaert³

et al. 2019

Knee Surg Sports Traumatol Arthrosc

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Purpose The trochlear dysplastic femur has a specific morphotype previously characterised by not only dysplastic features of the trochlea but also by specific features of the notch and posterior femur. In this study the morphology of the tibia and patella was investigated to gain further insight in the complete geometrical complexity of the trochlear dysplastic knee. Methods Arthro‐CT scan‐based 3D models of 20 trochlear dysplastic and 20 normal knees were uniformly scaled and landmarks and landmark‐based reference planes were created to quantify a series of morphometric characteristics of the tibia and patella. Results In the mediolateral direction, the 3D‐analysis revealed a 3% smaller medial tibial plateau (30.4 ± 1.6 mm vs 31.5 ± 1.6 mm), a 3% smaller overall width of the tibial plateau (73.6 ± 2.0 mm vs 75.7 ± 2.0 mm), a 16% smaller medial facet (17.3 ± 2.2 mm vs 20.1 ± 1.3 mm) and a 4% smaller overall width of the patella (41.7 ± 2.5 mm vs 43.4 ± 2.3 mm) in trochlear dysplastic knees. In the anteroposterior direction, the lateral tibial plateau of trochlear dysplastic knees was 5% larger (37.2 ± 2.3 mm vs 35.5 ± 3.1 mm). A correlation test between the width of the femur and the width of the tibia revealed that trochlear dysplastic knees show less correspondence between the femur and tibia compared to normal knees. Conclusion Significant differences in the morphology of the tibial plateau and patella were detected between trochlear dysplastic and normal knees. Both in the trochlear dysplastic tibial plateau and patella a narrower medial compartment leads to a significant smaller overall mediolateral width. These findings are important for the understanding of knee biomechanics and the design of total knee arthroplasty components. Level of evidence III.

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Characteristics of femorotibial joint geometry in the trochlear dysplastic femur

Cited by 9 publications

References 22 publications

Short lateral posterior condyle is associated with trochlea dysplasia and patellar dislocation

Short lateral posterior condyle is associated with trochlea dysplasia and patellar dislocation

Physiological Femoral Condylar Morphology in Adult Knees—A MRI Study of 517 Patients

A landmark-based 3D analysis reveals a narrower tibial plateau and patella in trochlear dysplastic knees

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