Varus alignment increases medial meniscus extrusion and peak contact pressure: a biomechanical study
| Autor: | Jan J Lang, Theresa Diermeier, Rainer Burgkart, Constantin von Deimling, Lukas Willinger, Andrea Achtnich, Wolf Petersen, Andreas B. Imhoff |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
musculoskeletal diseases
Male medicine.medical_specialty Knee Joint Meniscus (anatomy) Menisci Tibial 03 medical and health sciences 0302 clinical medicine Cadaver Pressure Medicine Humans Orthopedics and Sports Medicine Aged Ultrasonography Orthodontics 030222 orthopedics biology business.industry Ultrasound 030229 sport sciences musculoskeletal system biology.organism_classification Biomechanical Phenomena body regions Valgus medicine.anatomical_structure Orthopedic surgery Surgery Extrusion Female Stress Mechanical business Cadaveric spasm Contact area Medial meniscus |
| Zdroj: | Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA. 28(4) |
| ISSN: | 1433-7347 |
| Popis: | Assessment of medial meniscus extrusion (MME) has become increasingly popular in clinical practice to evaluate the dynamic meniscus function and diagnose meniscus pathologies. The purpose of this biomechanical study was to investigate the correlation between MME and the changes in joint contact pressure in varus and valgus alignment. It was hypothesized that varus alignment would result in significantly higher MME along with a higher joint contact pressure in the medial compartment. Eight fresh-frozen human cadaveric knees were axially loaded, with a 750 N compressive load, in full extension with the mechanical axis shifted to intersect the tibial plateau at 30% and 40% (varus), 50% (neutral), 60% and 70% (valgus) of its width (TPW). Tibiofemoral peak contact pressure (PCP), mean contact pressure (MCP) and contact area (CA) were determined using pressure-sensitive films. MME was obtained via ultrasound at maximum load. MME was significantly increased from valgus (1.32 ± 0.22 mm) to varus alignment (3.16 ± 0.24 mm; p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink