2017 ISAKOS Biennial Congress ePoster #1286

 

Anterior Cruciate Ligament Reconstruction in Association to Unicompartmental Replacement: a Retrospective Study Comparing Clinical and Radiological Outcome of two Different Implant Designs

Paolo Adravanti, MD, Parma ITALY
Andrea Tecame, MD, Parma ITALY
Rocco Papalia, MD, PhD, Prof., Rome ITALY

Città di Parma Clinic, Parma, ITALY

FDA Status Not Applicable

Summary

UKA + ACL is a very viable option for the treatment of medial osteoarthritis secondary to ACL deficiency in young patients

Abstract

Introduction

In patients affected by medial osteoarthritis (OA) and anterior cruciate ligament (ACL) deficiency two opposite
scenarios can be found: a traumatic rupture of ACL, especially in young patients, which can lead to medial OA, or a
degenerative ACL rupture, typical of older patients, which is secondary to medial OA. The aim of this study is to
evaluate retrospectively the outcomes of two different implant designs in patients with medial OA secondary to
traumatic ACL rupture, who underwent to combined ACL reconstruction and unicompartmental knee replacement.

Materials And Methods

From 2007 to 2013, 24 patients with medial OA secondary to ACL rupture underwent to medial unicompatimental knee
arthroplasty (UKA) + ACL reconstruction. Nine patients received a mobile bearing prosthesis (Group 1) and 15 a fixed
bearing one (Group 2). The mean follow up was 53±8.3 months for Group 1 and 42±6.7 months for Group 2. KSS
score, WOMAC score and radiological evaluation to assess the implant loosening were recorded preoperatively and at
the last follow up.

Results

Ath the final follow up all the patients showed a statistically significant clinical improvements with respect to the
preoperative values (p<0.0001). No significant difference was observed in KSS and WOMAC score between groups at
the last follow up (KSS 159.4±11.7 vs 161.5±12.3; WOMAC 79±7.3 vs 81±7.6 for group 1 and 2, respectively). No
significant evidences of pathologic radiolucent lines around the components were found in either groups.

Conclusion

UKA + ACL is a very viable option for the treatment of medial osteoarthritis secondary to ACL deficiency in young
patients. The use of different prosthesis design (fixed or mobile bearing) does not affect the middle-term results.