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Central aponeurosis tears of the rectus femoris: practical sonographic prognosis
  1. Ramon Balius (rbalius{at}gencat.cat)
  1. Consell català de l'esport, Generalitat de Catalunya. R.C.D.Espanyol de Barcelona, Spain
    1. Antonio Maestro
    1. Fremap. Real Sporting of Gijón, Spain
      1. Carles Pedret
      1. Physical Activity and Sports Professional Medicine School, University of Barcelona, Spain
        1. Asun Estruch
        1. Consell Català de l’ Esport. Generalitat de Catalunya, Spain
          1. Javier Mota
          1. DRIM Teleradiology, Spain
            1. Luis Rodriguez
            1. Hospital de Cabueñes, Spain
              1. Pedro García
              1. Hospital de Cabueñes, Spain
                1. Eduard Mauri
                1. Aspetar Hospital. National sports Medicine program (Doha, Qatar). R.C.D. Espanyol de Barcelona, Spain

                  Abstract

                  Objective: This study is a statistical analysis to establish whether or not a correlation exists between the level and degree of rectus femoris (RF) central tendon injury and the amount of time that athlete is unable to participate subsequently referred to as “sports participation absence” (SPA).

                  Design: Causal-comparative study.

                  Patients: 35 players from two high-level Spanish soccer teams with an injury to the central tendon of the RF based on clinical and ultrasound (US) criteria.

                  Main outcome measurement: Ultrasound examination was performed with an 8-12 MHz linear multi-frequency transducer. All studies included both longitudinal and transverse RF sections.

                  Results: At the proximal level the SPA time was 45.1 days when the injury length is 4.0 cm. This value increases by 5.3 days with each 1 cm increase in the length of injury. In the case of distal level injury, SPA time was 32.9 days when the injury length is 3.9 cm. This value increases by 3.4 days with each 1 cm increase. In the total representative sample, SPA time when the injury length is 4.2 cm corresponds to 39.1 days. This value increases by 4.2 days per length unit.

                  Conclusions: RF central tendon injury at the proximal level is associated with a greater SPA time than at the distal level. Patients with a grade II injury have a SPA time longer than those with a grade I whether the injury is located proximal or distal.

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