Minimally Invasive Anatomical Reconstruction of Posteromedial Corner of Knee: A Cadaveric Study

Jorge Chahla, Damián Arroquy, Tomas Vilaseca, Martin Carboni, Justin J. Mitchell, Chase S. Dean, Mark E. Cinque, Scott A. Rodeo, Cecilia Pascual-Garrido

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1 Scopus citations


We conducted a study to determine if a minimally invasive posteromedial reconstruction technique would return medial knee stability to its intact state. Ten cadaveric knees were tested under 3 state conditions: intact, sectioned, and reconstructed. The medial compartment opening was measured on valgus stress radiographs at full extension and at 20° of flexion with a 10-N valgus load (applied with dynamometer) to assess valgus stability in the intact, sectioned, and reconstructed states. After posteromedial sectioning, mean medial gap was statistically significantly larger (P = .0002) at full extension (11 mm vs 3.3 mm) and at 20° of flexion (12.6 mm vs 3.7 mm). There was no statistically significant difference between the value of the intact state and the value after minimally invasive reconstruction at 0° (P = .56) or 20° (P = .102) of flexion. Interobserver reliability for the measurements was almost perfect (κ = 0.86). Minimally invasive medial knee reconstruction returns medial knee stability almost to normal at full extension and at 20° of flexion. Development of minimally invasive techniques will allow medial ligament reconstruction with minimal disruption of the surrounding tissue, potentially leading to less scarring and easier restoration of knee motion after surgery.

Original languageEnglish
Pages (from-to)E429-E434
JournalAmerican journal of orthopedics (Belle Mead, N.J.)
Issue number6
StatePublished - Nov 1 2017


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