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  • Title: [Intra-articular or extra-articular substitution of cruciate ligament--a critical study (author's transl)].
    Author: Witt AN, Jäger M, Wirth CJ.
    Journal: Z Orthop Ihre Grenzgeb; 1979 Apr; 117(2):156-63. PubMed ID: 223344.
    Abstract:
    Intra- and extra-articular methods of cruciate ligament substitution are available for treating old anteromedial knee-joint instability. Twelve patients with intra-articular cruciate ligament substitution (median third of the patellar ligaments as free transplant) and 24 patients with extra-articular cruicate ligament substitution (operation according to Nciholas) were examined with particular reference to improved stability as follow-up examinations, the results being subjected to comparative evaluation. Intra-artricular cruciate ligament substitution reduces or eliminates the pre-operative instability of the joint which is due to insufficiency of the cruciate liagment, whereas the extra-articular cruciate ligament substitution produces a significantly more frequent reduction of elimination of the instability of the valgus position and of the anteromedial instability. The combination of both methods to remove anteromedial instability of the knee joint may seem a very useful solution of the problem, but it should be limited to a restricted group of patients because it involves also contain disadvantages which make it unsuitable for indiscriminate application.
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