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POSTER ABSTRACTS - ISAKOS

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E-poster #743<br />

Clinical Result According to Associated Injuries<br />

in Allograft Meniscus Transplantation<br />

Kyoung Ho Yoon, Seoul, KOREA, Presenter<br />

Dae Kyung Bae, Seoul, KOREA<br />

Chan Teak Lim, Seoul, KOREA<br />

Jeong Han Ha, Seoul, KOREA<br />

Nam Su Cho, Seoul, KOREA<br />

Depart. of Orthop.Kyung Hee University Hospital,<br />

Seoul, KOREA<br />

Purpose : This study analyzes and compares the<br />

clinical result according to associated injuries in<br />

allograft meniscus transplantation.<br />

Materials and Methods : We retrospectively<br />

analyzed 36 knees in 35 patients who underwent<br />

allograft meniscus transplantation from 1999 to<br />

2003. Fourteen cases involved the medial<br />

meniscus, and 22 cases involved the lateral<br />

meniscus. The mean period from the total<br />

meniscectomy to the meniscus transplantation<br />

was three years and one month, the mean followup<br />

period was 2 years and 4 months, and the<br />

mean age of the patients was 32.5 years. Thirteen<br />

cases had an isolated meniscus deficiency (Group<br />

I), 5 cases were combined with injury of the<br />

anterior cruciate ligament (ACL) (Group II), 11<br />

cases combined with chondral defect (Group III),<br />

and 7 cases combined with both the injury of the<br />

ACL and the chondral defect (Group IV). The<br />

clinical results were evaluated using the Lysholm<br />

knee scoring system. Patients consented to<br />

arthroscopic second look evaluation of fifteen<br />

knees.<br />

Results : Regarding operative methods, 30 cases<br />

used a key hole method and 6 cases, for whom<br />

both reconstruction of the ACL and medical<br />

meniscus transplantation were performed<br />

simultaneously or in sequence, used a bone plug<br />

method. Out of 18 cases with chondral defect,<br />

additional autologous chondrocyte implantation<br />

was performed in 17 cases and the high tibial<br />

osteotomy in one case. The mean Lysholm knee<br />

scores improved 60.4 preoperatively to 93.1 at the<br />

latest follow-up. No statistically significant<br />

differences were found in Lysholm knee scores<br />

among the groups, between medial and lateral<br />

meniscus, and according to the operative<br />

methods. Two cases in Group I showed the<br />

problem of uneven tension in the transplanted<br />

allograft due to a size mismatch of the meniscus.<br />

The one case involving the high tibial osteotomy<br />

in Group III presented an intra-articular fracture.<br />

One case in Group IV demonstrated a<br />

postoperative partial ankylosis. Arthroscopic<br />

second look evaluation showed good or excellent<br />

peripheral healing in all cases.<br />

Conclusion : Allograft meniscus transplantation<br />

may be a viable option for the treatment of<br />

symptomatic patients with a meniscus-deficient<br />

knee. Patients whose injury is combined with a<br />

chondral defect or ligament instability should be<br />

treated with concomitant surgeries.<br />

E-poster #744<br />

Osteoarthritis After Total Menisectomy of the<br />

Medial, Lateral, Discoid Meniscus, and Medial<br />

Meniscus with Anterior Cruciate Ligament<br />

Injury<br />

Kyoung Ho Yoon, Seoul, KOREA, Presenter<br />

Dae Kyung Bae, Seoul, KOREA<br />

Dong Hun Lee, Seoul, KOREA<br />

Jeong Han Ha, Seoul, KOREA<br />

Nam Su Cho, Seoul, KOREA<br />

Depart. of Orthop.Kyung Hee University Hospital,<br />

Seoul, KOREA<br />

Purpose : The purpose of this article is to analyze<br />

the clinical and radiologic results with patients<br />

who have undergone total menisectomy of the<br />

medial meniscus, lateral meniscus, discoid<br />

meniscus, and medial meniscus with anterior<br />

cruciate ligament(ACL) injury.<br />

Materials and Methods : Seventy-eight patients<br />

with 78 knees, who underwent total menisectomy<br />

between 1992 to 1998 and were followed up for at<br />

least 5 years, were evaluated. There were 16<br />

medial meniscus cases (Group I), 17 lateral<br />

meniscus cases (Group II), 29 discoid meniscus<br />

cases (Group III), and 16 medial meniscus cases<br />

with ACL injury (Group IV). The mean follow-up<br />

period was 7 years 2 months (range: 5 years to 11<br />

years 9 months). There were 54 men and 24<br />

women, aged from 10 to 39 years, who weighed<br />

from 36.5 to 103 kg. We exclude the cases which<br />

involved bilateral knees or both medial and lateral<br />

meniscus, had degenerative changes at the time<br />

of operation or mal-alignment, or whose weight<br />

was over 2 standard deviations for their age. For<br />

each group, functional and clinical results were<br />

evaluated with the Lysholm knee scoring system,<br />

and radiographic measurements were made with<br />

the Fairbank sign and the Alback classification<br />

system. The Kaplan-Meyer survivorship method<br />

was used for statistical analysis, while the knee<br />

joint space which narrowed over 50% (Alback<br />

Grade II) was defined as osteoarthritis.

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