2015 ISAKOS Biennial Congress ePoster #1708

Comparison of Results in HTO According to Presence of Kissing Lesions

Oog Jin Sohn, MD, Deagu KOREA, REPUBLIC OF
Beom-Jung Kim, MD, Deagu KOREA, REPUBLIC OF
Dong Chul Lee, MD, PhD, Daegu, Kyungsangbukdo KOREA, REPUBLIC OF

Yeungnam University Hospital, Daegu, KOREA

FDA Status Cleared

Summary: This study compares the clinical and radiologic outcomes between kissing and non-kissing lesion group after being treated with HTO.

ePoster Not Provided
Rate:

Abstract:

1) Purpose:

Outcomes for high tibial osteotomy (HTO) of the proximal tibia is known to be poorer as the Outerbridge grade of the articular cartilage increases. Yet there has been no study on the adequacy and prognostic significance of HTO on kissing lesions, in which both the medial femoral and tibial cartilage are missing. This study compares the clinical and radiologic outcomes between kissing and non-kissing lesion group after being treated with HTO.

2) Patients and Methods:

From patients with medial compartment osteoarthritis and varus deformity who were treated with open wedge HTO from 2007 to 2012, 20 cases(21 participants) with and 21 cases(22 participants) without Kissing lesions were selected. Along with HTO, microfracture or cartilage debridement was performed on the medial tibial plateau. Average follow-up period for the Kissing lesion group and control group was 24.2 months and 27 months, respectively. Clinical assessment was done by comparing the preoperative, 3 months, 6 months, and 12 months postoperative follow-up outcomes of both groups using VAS score, Hospital for Special Surgery score, WOMAC score, Lyosholm Scoring Scale, Tegner activity scale. Radiologic assessment was carried out by comparing the preoperative, postoperative, and final follow-up results of the femorotibial angle, posterior tibial slope angle of the medial tibial plateau, and joint space distance. On final follow-up, a second-look arthroscopy and assessment for complications were done.

3) Results:

No statistically significant differences between the two groups were noted on the radiologic assessment of the femorotibial angle, posterior slope angle of the medial tibial plateau, and joint space distance. When compared with preoperative clinical scores, both groups showed favorable clinical improvements in the postoperative HSS score, Lyosholm Knee Scoring Scale, and WOMAC score. The overall clinical scores, excluding VAS score, was lower, but not statistically significant, for the kissing lesion group. The VAS score, which decreased for both groups postoperatively, was significantly higher for the kissing lesion group in the last follow-up.

4) Conclusions:

Excluding limited pain relief effect, because kissing lesion group treated with HTO showed favorable short-term clinical and radiologic results, HTO appears to be an acceptable treatment option for degenerative osteoarthritis with kissing lesion.