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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 328 - 328
1 Sep 2012
Zaffagnini S Marcacci M Marcheggiani Muccioli GM Bulgheroni P Berbig R Holsten D Lagae K Monllau J Crespo R Bulgheroni E
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INTRODUCTION

The purpose of this study is to report results from a prospective multicenter study of a bioresorbable type I collagen scaffold used to replace tissue loss following irreparable lateral meniscus injuries.

METHODS

49 non-consecutive patients (33M/16F; mean age 30.5 yrs, range 14.7–54.7 yrs) with irreparable lateral meniscus tears or loss requiring surgical treatment were prospectively enrolled at one of 7 EU centers. 11 patients (22%) had acute injuries of the lateral meniscus, while 38 (78%) had prior surgeries to the involved meniscus. Implantation of the LCMI (now Lateral Menaflex) was performed arthroscopically using an all-inside suturing technique (FASTFIX) combined with inside-out sutures in the more anterior meniscus aspect. Forty-three patients were evaluated with a 2 to 4-year follow-up (FU); mean FU duration was 45 months (range, 33–53 m). Patients were evaluated clinically and by self-assessment using Tegner activity and Lysholm function scores, as well as the Visual Analog Scales (VAS) for pain, and a satisfaction questionnaire. Evaluations were performed pre-operatively, 6 months, 1 year, 2 and 4 years after surgery. X-ray and/or MR-images were taken pre-operatively, and at 1 year and 2 years after surgery.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 144 - 144
1 Sep 2012
Bruni D Raspugli G Iacono F Lo Presti M Zaffagnini S Marcacci M
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Background

The reported outcomes of unicompartmental knee replacement (UKR) for spontaneous osteonecrosis of the knee (SPONK) often derive from small series with an average followup of 5 years, enabling to generate meaningful conclusions. Therefore, we determined the long-term functional results and the 10-years survivorship of the implant in all patients with advanced SPONK of the medial tibio-femoral compartment treated with a unicompartmental knee arthroplasty at our institute.

Methods

We retrospectively evaluated 84 consecutive patients with late stage SPONK. All patients received a pre-operative MRI to confirm the diagnosis, to exclude any metaphyseal involvement and to assess the absence of significative degenerative changes in the lateral and PF compartment. Mean age at surgery was 66 years and mean body mass index (BMI) was 28.9. In all cases, SPONK involved the medial compartment; in 77 cases the medial femoral condyle (MFC) was involved, while in 7 cases the pathology site was the medial tibial plateau (MTP). Radiological evaluation was conducted by 3 different radiologists and clinical evaluation according to KSS and WOMAC score was performed by 3 fellows from outside institutions, with no previous clinical contact with the patients, at a mean followup of 98 months.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 375 - 375
1 Sep 2012
Zaffagnini S Marcheggiani Muccioli GM Bonanzinga T Signorelli C Lopomo N Bignozzi S Bruni D Nitri M Bondi A Marcacci M
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INTRODUCTION

This study aimed to intra-operatively quantify the improvements in knee stability given both by anatomic double-bundle (ADB) and single-bundle with additional lateral plasty (SBLP) ACL reconstruction using a navigation system.

MATERIALS AND METHODS

We prospectively included 35 consecutive patients, with an isolated anterior cruciate ligament injury, that underwent both ADB and SBLP ACL reconstruction (15 ADB, 20 SBLP). The testing protocol included anterior/posterior displacement at 30° and 90° of flexion (AP30–AP90), internal/external rotation at 30° and 90° of flexion (IE 30–IE90) and varus/valgus test at 0° and 30° of flexion (VV0–VV30); pivot-shift (PS) test was used to determine dynamic laxity. The tests were manually performed before and after the ACL reconstruction and the data were acquired by means a surgical navigation system (BLU-IGS, Orthokey, USA). Comparisons of pre- and post-reconstruction laxities were made using paired Student t-test (P=0.05) within the same group; comparison between ADB and SBLP groups was indeed performed using independent Student t-test (P=0.05), analysing both starting pre-operative condition and post-operative one.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 140 - 140
1 Sep 2012
Muccioli GMM Zaffagnini S Lopomo N Bruni D Nitri M Bonanzinga T Grassi A Ravazzolo G Molinari M Rimondi E Marcacci M
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Purpouse

We hypothesized that patients receiving a medial collagen meniscus implant (MCMI) would show better clinical, radiograpich and Magnetic Resonanace Imaging (MRI) outcomes than patients treated with partial medial meniscectomy (PMM) at minimum 10 year FU.

Material and Methods

Thirty-three non-randomized patients (males, mean age 40 years) were enrolled in the study to receive a MCMI (17 patients) or as control treated with a PMM (16 patients).

All of them were clinically evaluated at time zero, 5 and minimum 10 years after surgery (mean FU 133 months, range 120–145) by Lysholm, VAS for pain, objective IKDC knee form and Tegner activity level. SF-36 score was performed pre-operatively and at final FU.

Bilateral weight-bearing XRays were executed at time zero and at final FU. Minimum 10 years FU MRI images were compared with collected pre-operative MRI images by means of Yulish score. Genovese score was also used to evalute MCMI MRI survivorship.