SURGICAL TREATMENT OF COMBINED INJURY TO ANTERIOR CRUCIATE LIGAMENT, POSTERIOR CRUCIATE LIGAMENT, AND MEDIAL STRUCTURES

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Although uncommon, knee dislocations do present at least once and possibly more during an orthopaedic surgeon's career. The rate of dislocation has been reported to be 0.001% to 0.013% per year at various institutions.10, 18, 19, 26, 27; however, true data are difficult to obtain because a percentage of knee dislocations spontaneously reduce and are not diagnosed at the time of injury.5, 26 A dislocation should be suspected in a knee with gross instability of two or more ligaments following trauma, despite a reduced joint on radiographs.5 Subsequent evaluation and treatment should be performed under the assumption that a dislocation has occurred.26 This can be the case with injuries involving the anterior cruciate ligament (ACL) and the posterior cruciate ligament (PCL), combined with injuries in the medial collateral ligament (MCL). High-energy injuries involving a combined valgus and external axial moment can produce this injury complex, which is the focus of this article.

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ANATOMY AND BIOMECHANICS

Injuries involving the ACL–PCL–MCL complex result in multiplanar instability. Analyzed separately, the ACL and PCL are the primary stabilizers of the knee, resisting anterior and posterior translation, respectively. As a separate entity, the superficial medial collateral ligament, has been shown to resist primarily valgus stress at 0° and 45°.30 Combined with a posterior cruciate ligament injury, however, these structures have been shown to function as a secondary restraint to posterior

EVALUATION

Most knee dislocations are obvious on initial clinical presentation, whereas evaluation of patients with multiple-ligamentous knee injuries requires a high index of suspicion to exclude the possibility of knee dislocation with spontaneous reduction. The treatment algorithm for the evaluation and treatment of these injuries in this article is illustrated in Figure 1. The process begins with a brief history that includes the mechanism of injury and associated injuries. A careful vascular and

TREATMENT APPROACH

Reports that address multiple-ligament knee injury results advocate an operative reconstruction of the cruciate ligaments with variability in the approach towards the medial structures. Timing of the procedure is based on the degree of injury involving the medial collateral ligament.19, 20, 23, 25, 29 The MCL is an extra-articular structure with a capacity for healing without operative repair. Basic science and clinical studies support a conservative approach when dealing with these injuries in

SURGICAL TECHNIQUE

A recent method of reconstruction of the posterior cruciate ligament uses a double-bundle technique that reconstructs the anterolateral and posteromedial components of the posterior cruciate ligaments, whereas the traditional single-bundle techniques recreate the larger anterolateral component of this structure.7 Although biomechanical studies have demonstrated the superiority of this technique in a cadaveric model, in which properties of the double-bundle construct more closely resemble the

TREATMENT RESULTS

Different approachs have been reported with respect to this combination of injury, and no specific treatment consensus exists. Although the treatment approach of isolated injuries to the MCL and ACL–MCL injuries is accepted, these treatment principles cannot be extrapolated to ACL–PCL–MCL injuries.2, 3, 4, 13, 14, 15, 16, 17, 24 Presently, two treatment approaches have been recommended for this injury complex.

The authors' treatment approach, as outlined, recommends repair or reconstruction of

References (34)

  • N.W. Hoover

    Injuries of the popliteal artery associated with fractures and dislocations

    Surg Clin North Am

    (1961)
  • S.L.Y. Woo et al.

    Biomechanics of knee ligament healing, repair, and reconstruction

    J Biomech

    (1997)
  • D.R. Anderson et al.

    Healing of the medial collateral ligament following a triad injury: A biomechanical and histologic study of the knee in rabbitts

    J Orthop Res

    (1992)
  • G.L. Dersheid et al.

    Medial collateral ligament injuries in football: Nonoperative management of grade I and grade II sprains

    Am J Sports Med

    (1981)
  • J.C. Ellsaasser et al.

    The non-operative treatment of collateral ligament injuries of the knee in professional football players: An analysis of seventy-four injuries treated non-operatively and twenty-four injuries treated surgically

    J Bone Joint Surg [Am]

    (1974)
  • J.F. Fetto et al.

    Medial collateral ligament injuries of the knee: A rationale for treatment

    Clin Orthop

    (1978)
  • L. Good et al.

    The dislocated knee

    J Am Acad Orthop Surg

    (1995)
  • C.D. Harner et al.

    Loss of motion after anterior cruciate reconstruction

    Am J Sports Med

    (1992)
  • Harner C, Vogrin T, Kamamori A, et al: Biomechanical analysis of a double bundle posterior cruciate ligament...
  • J.A. Hill et al.

    Complications of posterolateral dislocation of the knee: Case report and literature review

    Clin Orthop

    (1981)
  • D. Hillard–Semball et al.

    Combined injuries to the anterior cruciate and medial collateral ligaments of the knee

    J Bone Joint Surg Am

    (1996)
  • J.C. Hughston et al.

    Acute anteromedial rotatory instability: Long-term results of surgical repair

    J Bone Joint Surg Am

    (1983)
  • J. Hughston et al.

    Acute tears of the posterior cruciate ligament: Results of operative treatment

    J Bone Joint Surg Am

    (1980)
  • IndelicatoP.A.

    Non-operative treatment of complete tears of the medial collateral ligament of the knee

    J Bone Joint Surg Am

    (1983)
  • P.A. Indelicato

    Isolated medial collateral ligament injuries in the knee

    J Am Acad Orthop Surg

    (1995)
  • P.A. Indelicato et al.

    Non-operative management of complete tears of the medial collateral ligament of the knee in intercollegiate football players

    Clin Orthop

    (1990)
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    Address reprint requests to Christopher D. Harner, MD, UPMC, Center for Sports Medicine and Rehabilitation, 4601 Baum Boulevard, Pittsburgh, PA 15213

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