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The effect of posterior knee capsulotomy on posterior tibial translation during posterior cruciate ligament tibial inlay reconstruction.

Publication ,  Journal Article
Park, SE; Stamos, BD; DeFrate, LE; Gill, TJ; Li, G
Published in: Am J Sports Med
September 2004

PURPOSE: To measure the biomechanical effect of the surgical capsulotomy made during a posterior cruciate ligament reconstruction using the tibial inlay technique. HYPOTHESIS: The posterior capsule contributes to posterior tibial stability. STUDY DESIGN: Controlled laboratory experiment. METHODS: Six knee specimens were tested on a robotic testing system from 0 degrees to 120 degrees of flexion with the posterior cruciate ligament intact and resected and with a posterior capsulotomy identical to that performed during tibial inlay reconstruction (sham surgery). A longitudinal incision with medial and lateral soft tissue stripping sufficient to mount an inlay bone block and pass an Achilles tendon graft into the knee was made in the oblique popliteal ligament, muscle belly of the popliteus, and posterior capsule. The posterior tibial translation was measured under a posterior tibial load of 130 N at multiple flexion angles. RESULTS: Capsulotomy increased the posterior laxity compared with the posterior cruciate ligament-resected knee at every flexion angle. An additional 0.97 +/- 0.48 mm, 0.65 +/- 0.47 mm, 0.56 +/- 0.33 mm, 0.48 +/- 0.38 mm, and 0.94 +/- 0.60 mm of posterior laxity was recorded at 0 degrees, 30 degrees, 60 degrees, 90 degrees, and 120 degrees of flexion, respectively. These values were all statistically significant (P < .001). CONCLUSIONS: A posterior capsulotomy alone, without associated posteromedial or posterolateral disruption, produces additional posterior tibial translation in vitro compared with posterior cruciate ligament-deficient knee with intact capsule. CLINICAL RELEVANCE: Damage to the posterior capsule may contribute to the residual posterior laxity noted clinically after posterior cruciate ligament reconstruction.

Duke Scholars

Published In

Am J Sports Med

DOI

ISSN

0363-5465

Publication Date

September 2004

Volume

32

Issue

6

Start / End Page

1514 / 1519

Location

United States

Related Subject Headings

  • Tibia
  • Robotics
  • Posterior Cruciate Ligament
  • Plastic Surgery Procedures
  • Orthopedics
  • Orthopedic Procedures
  • Middle Aged
  • Male
  • Knee Joint
  • Knee Injuries
 

Citation

APA
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MLA
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Park, S. E., Stamos, B. D., DeFrate, L. E., Gill, T. J., & Li, G. (2004). The effect of posterior knee capsulotomy on posterior tibial translation during posterior cruciate ligament tibial inlay reconstruction. Am J Sports Med, 32(6), 1514–1519. https://doi.org/10.1177/0363546504265594
Park, Sang Eun, Bruce D. Stamos, Louis E. DeFrate, Thomas J. Gill, and Guoan Li. “The effect of posterior knee capsulotomy on posterior tibial translation during posterior cruciate ligament tibial inlay reconstruction.Am J Sports Med 32, no. 6 (September 2004): 1514–19. https://doi.org/10.1177/0363546504265594.
Park, Sang Eun, et al. “The effect of posterior knee capsulotomy on posterior tibial translation during posterior cruciate ligament tibial inlay reconstruction.Am J Sports Med, vol. 32, no. 6, Sept. 2004, pp. 1514–19. Pubmed, doi:10.1177/0363546504265594.
Park SE, Stamos BD, DeFrate LE, Gill TJ, Li G. The effect of posterior knee capsulotomy on posterior tibial translation during posterior cruciate ligament tibial inlay reconstruction. Am J Sports Med. 2004 Sep;32(6):1514–1519.
Journal cover image

Published In

Am J Sports Med

DOI

ISSN

0363-5465

Publication Date

September 2004

Volume

32

Issue

6

Start / End Page

1514 / 1519

Location

United States

Related Subject Headings

  • Tibia
  • Robotics
  • Posterior Cruciate Ligament
  • Plastic Surgery Procedures
  • Orthopedics
  • Orthopedic Procedures
  • Middle Aged
  • Male
  • Knee Joint
  • Knee Injuries