Concurrent or sequential development of medial meniscal and subchondral cystic lesions within the medial femorotibial joint in horses (1996–2006)

Hendrix, S. M.; Baxter, Gary M.; Ilwraith, C. W. Mc; Hendrickson, Dean A.; Goodrich, Laurie R.; Frisbie, David D.; Trotter, Gayle W.

doi:10.2746/042516409x454556

Cited by 46 publications

(51 citation statements)

References 15 publications

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“…The FEM also predicts increases in stress in the medial meniscus with an SBC due to altered load transfer. This finding is in line with clinical information revealing secondary injuries to the meniscus and proximal tibia, which reduce treatment success rates . Therefore, incomplete healing or enlargement of the SBC after treatment may impact long‐term soundness.…”

Section: Introductionsupporting

confidence: 84%

Stimulation of subchondral bone cyst healing by placement of a transcondylar screw in the equine medial femoral condyle

2019

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Objective To predict the bone formation stimulus of a transcondylar screw across an equine subchondral bone cyst (SBC) in an equine medial femoral condyle (MFC). Study design Finite element modeling (FEM) of an equine MFC with a 2 cm3 SBC under several transcondylar screw conditions. Sample population The right stifle of a yearling thoroughbred without stifle disease that had been euthanized for reasons unrelated to this study and donated to the University. Methods The FEM was derived from computed tomography of a yearling thoroughbred and analyzed in ABAQUS v6.14. The transcondylar screw was modeled as a 4.5‐mm stainless steel cylinder. The region of interest was the centrodistal MFC, and bone stimulus was calculated. The stimulus threshold for bone formation (BFT) was >60 MPa and is presented as the percentage of total bone surface area (BFA) and frontal plane maps. Principal compressive stress vectors were also determined. Tested variables were daily cycles, load, and screw compression and position. Results At 750 cycles and 900‐N load, <3% of the BFA exceeded the BFT. Increases in BFA > BFT occurred proportionally with load, screw compression, and daily cycles (steps). Compressive stress was oriented vertically on the SBC surface without a screw but aligned with the long axis of well‐placed lag screws. Screw placement through the void also increased the number and magnitude of compressive vectors. Conclusion This model predicted that a transcondylar lag screw across an MFC SBC increased surface BFA stimulation and reoriented the compression vector. Increasing screw compression, load, and steps per day increased the bone formation stimulus. Clinical significance This study provides evidence that supports the use of a lag screw thorough an MFC SBC to promote bone formation.

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Section: Introductionsupporting

confidence: 84%

Stimulation of subchondral bone cyst healing by placement of a transcondylar screw in the equine medial femoral condyle

2019

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“…The conclusion of this study was that the amount of cartilage surface affected seemed to be a better predictor of success than lesion depth. Recently we have reported on an association between debridement of medial femoral condylar defects and medial meniscus or meniscal ligamentous injury (Hendrix et al 2010). While the study did not demonstrate this, it seems logical that a debrided edge of bone could cause trauma to the opposing cranial horn of the meniscus or cranial ligaments of the medial meniscus.…”

Section: Treatmentcontrasting

confidence: 38%

Die Behandlung suchchondraler Knochenzysten des medialen Femurkondylus - Fortschritte auf der Basis von Forschung und klinischer Erfahrung

McIllwraith¹

2010

PHK

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“…While medial meniscal injury has been associated with subchondral cystic lesions of the medial femoral condyle (Hendrix et al . 2010), it is not clear if these femoral lesions are a result or a cause of the observed meniscal injury.…”

Section: Introductionmentioning

confidence: 99%

Meniscal translocation and deformation throughout the range of motion of the equine stifle joint: An in vitro cadaveric study

Fowlie

Arnoczky

Stick

et al. 2010

Equine Veterinary Journal

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Concurrent or sequential development of medial meniscal and subchondral cystic lesions within the medial femorotibial joint in horses (1996–2006)

Abstract: Trauma to the MFT joint may lead to both meniscal and subchondral bone damage of the medial femoral condyle that may be recognised concurrently or sequentially.

Cited by 46 publications

References 15 publications

Stimulation of subchondral bone cyst healing by placement of a transcondylar screw in the equine medial femoral condyle

Stimulation of subchondral bone cyst healing by placement of a transcondylar screw in the equine medial femoral condyle

Die Behandlung suchchondraler Knochenzysten des medialen Femurkondylus - Fortschritte auf der Basis von Forschung und klinischer Erfahrung

Meniscal translocation and deformation throughout the range of motion of the equine stifle joint: An in vitro cadaveric study

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