Does anterior cruciate ligament reconstruction restore normal knee kinematics? A prospective MRI analysis over two years

Jennie M. Scarvell, Paul N. Smith, K. M. Refshauge, H. R. Galloway, K. R. Woods

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

This prospective study used magnetic resonance imaging to record sagittal plane tibiofemoral kinematics before and after anterior cruciate ligament reconstruction using autologous hamstring graft. Twenty patients with anterior cruciate ligament injuries, performed a closed-chain leg-press while relaxed and against a 150 N load. The tibiofemoral contact patterns between 0° to 90° of knee flexion were recorded by magnetic resonance scans. All measurements were performed pre-operatively and repeated at 12 weeks and two years. Following recon struction there was a mean passive anterior laxity of 2.1 mm (SD 2.3), as measured using a KT 1000 arthrometer, and the mean Cincinnati score was 90 (SD 11) of 100. Pre-operatively, the medial and lateral contact patterns of the injured knees were located posteriorly on the tibial plateau compared with the healthy contralateral knees (p = 0.014), but were no longer different at 12 weeks (p = 0.117) or two years postoperatively (p = 0.909). However, both reconstructed and healthy contralateral knees showed altered kinematics over time. At two years, the contact pattern showed less posterior translation of the lateral femoral condyle during flexion (p < 0.01).

Original languageEnglish
Pages (from-to)324-330
Number of pages7
JournalThe Bone and Joint Journal
Volume88
Issue number3
DOIs
Publication statusPublished - Mar 2006
Externally publishedYes

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