Original Article With Video Illustration
Arthroscopic Suture Fixation for Avulsion Fractures in the Tibial Attachment of the Posterior Cruciate Ligament

Presented at the 30th Annual Meeting of the Arthroscopy Association of North America, San Francisco, California, April 14-16, 2011 (podium SS-62).
https://doi.org/10.1016/j.arthro.2012.04.141Get rights and content

Purpose

The purpose of the study was to highlight our surgical technique of arthroscopic suture fixation for acute tibial eminence posterior cruciate ligament (PCL) avulsion fractures, clinical and radiographic outcomes, and complication rates.

Methods

This prospective study enrolled patients who had undergone arthroscopic reduction and suture fixation by use of 4 No. 5 Ethibond sutures (Ethicon, Somerville, NJ) for image-proven displaced PCL attachment fractures of the tibial eminence with posterior knee instability of grade II or higher. The mean follow-up period was 36 months (range, 24 to 45 months). Follow-up assessment included 3 different functional scores, KT-1000 arthrometry (MEDmetric, San Diego, CA), and radiographic evaluation.

Results

The mean preoperative Lysholm score in the 36 patients was 35 (range, 26 to 55); the mean postoperative Lysholm score was 95 (range, 80 to 100). The mean preinjury and preoperative Tegner scores in the 36 patients were 7.4 ± 1.6 (range, 5 to 9) and 3.2 ± 1.5 (range, 2 to 5), respectively. The mean postoperative Tegner score was 7.0 ± 1.8 (range, 5 to 9). At the final follow-up, the International Knee Documentation Committee scores were observed to be normal (grade A) or nearly normal (grade B) in 33 patients (91.7%) and abnormal (grade C) in 3 patients (8.3%). All 36 fractures achieved union within 3 months. No significant complications such as arthrofibrosis, loss of initial fixation, or wound infection were noted.

Conclusions

Treatment of tibial PCL avulsion fractures by arthroscopic suture fixation is a successful technique to restore tibial avulsion injuries of the PCL with well-documented radiographic healing, good clinical outcomes, and low complication rates.

Level of Evidence

Level IV, therapeutic case series.

Section snippets

Methods

In this prospective study, we enrolled 36 patients with imaging evidence of PCL avulsion fractures of the tibial attachment who underwent arthroscopy-assisted surgery between January 2004 and August 2008. The inclusion criteria for the study were a displaced PCL tibial avulsion fracture (>3 mm of upward displacement of the bony fragment) with radiographic evidence of bone fragmentation regardless of fragmentation sizes or degree of comminution and posterior knee instability of grade II or

Lysholm Knee Scores

The mean preoperative Lysholm score in the 36 patients was 35 (range, 26 to 55), and the mean postoperative Lysholm score was 95 (range, 80 to 100). Lysholm scores significantly differed between the preoperative evaluation and the final follow-up (P = .023).

Tegner Activity Level

The mean preinjury and preoperative Tegner scores for the 36 patients were 7.4 ± 1.6 (range, 5 to 9) and 3.2 ± 1.5 (range, 2 to 5), respectively. The mean postoperative Tegner score was 7.0 ± 1.8 (range, 5 to 9). The improvement in the

Discussion

The principal findings of our study showed that PCL avulsion fractures are not rare injuries as previously reported in the English-language literature, and the PCL is vulnerable to damage during dashboard injuries and hyperflexion of the knee.16, 17, 18, 19 The rate of motorcycle-related accidents is high in Asia because of the convenience and popularity of motorcycles.3, 4, 5, 7, 9, 10 Meticulous attention to detail on trauma radiographs of the knee is necessary to detect some of the more

Conclusions

Treatment of tibial PCL avulsion fractures by arthroscopic suture fixation is a successful technique to restore tibial avulsion injuries of the PCL with well-documented radiographic healing, good clinical outcomes, and low complication rates.

References (22)

  • S.J. Kim et al.

    Arthroscopically assisted treatment of avulsion fractures of the posterior cruciate ligament from the tibia

    J Bone Joint Surg Am

    (2001)
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    The authors report that they have no conflicts of interest in the authorship and publication of this article.

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