Muscle strength characteristics following megaprosthetic knee reconstruction for bone sarcoma

• DOI: 10.1016/j.suronc.2023.101944
• Publication Date: 2023-04-08T14:59:54Z
• Authors: Merethe Lia Johansen; Ola Eriksrud; Joachim Thorkildsen; Ole-Jacob Norum; Torbjørn Wisløff; Ingeborg Taksdal; Tormod S. Nilsen
• Keywords: Knee flexion

To assess muscle strength characteristics in patients with resection and megaprosthetic reconstruction of the knee for bone sarcoma compared to age- sex-matched controls.This was a cross-sectional, case-control study. Muscle extension -flexion were assessed isokinetically at three different joint velocities: 60, 120 180°/s, by rate force development (RDFmax) extension. The Toronto Extremity Salvage Score (TESS) used patients.Eighteen (91.6 months postop.) 18 controls included. Relative controls, generated maximal torques 19%, 23% respectively. For flexion, 58%, 53% 60% 120, relative controls. RDFmax operated leg 2.75 ± 2.13 N/ms, 7.16 4.78 N/ms non-operated leg, 7.95 4.29 mean TESS score 84.0.Patients reached approximately 20% torque. In isometric assessments, they double amount time generate one-third despite good scores.