Article

[Primary- and revision-reconstruction of the anterior cruciate ligament with allografts: a retrospective study including 325 patients].

Authors:
  • Perth Orthopaedics &Sportsmed centre
  • ARCUS Sportsclinic Pforzheim, Germany
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Abstract

At our institution we have used fresh-frozen allografts for the reconstruction of the anterior and posterior cruciate ligament since 1993. In this retrospective study we evaluated the clinical outcome of 325 fresh-frozen allografts (bone-patellar-tendon-bone allografts and Achilles-bone-tendon allografts) for primary and revision ACL-reconstruction. Patients (average age 38 years) were operated between 5/1993 and 2/1998 and mean follow-up was 38 (range 24 to 71) months. Clinical evaluation consisted of a case history, an examination, IKDC, Cincinnati knee score (CKS), KT-1000 testing and standardized X-rays. Overall subjective rating according to the CKS was more than 82 points for both groups. Objective results according to the IKDC were normal or nearly normal in 75.6 % of primary- and 67.0 % of revision-ACL reconstructions. The stability measured with the KT-1000 showed an average maximum side to side difference of 2.1 mm for primary ACL reconstruction and 2.3 mm for revisioners. The total failure-rate (= rerupture-rate + laxity-failures) was 13.7 % for primary and 15.0 % for revision ACL reconstructions. Given the increased failure-rate, autograft tissue remains our graft of first choice for primary ACL-reconstruction. We advise to reserve allografts for revision procedures where suitable autogenous tissues have been previously compromised, where a contraindication for autogenous tissue harvest exists or for multiple ligament surgery. No specific complications were observed with the use of allograft tissue.

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... Other longer-term studies report that 26 weeks after combining the fascia lata with the lateral portion of the canine patellar tendon [48], graft strength and modulus achieve only 13 and 27% of normal ACL, respectively. When autograft reconstruction is not possible (e.g., for narrow patellar tendon or prior injury to the quadriceps mechanism), surgeons often use bone-patellar tendon-bone (BPTB) allografts to reconstruct the ACL [200,214,215]. Allografts offer the advantage that surgeons do not need to create a secondary morbidity site to harvest an autograft. ...
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