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. 2021 Oct;49(10):3000605211050781.
doi: 10.1177/03000605211050781.

Long-term outcomes of arthroscopic debridement of the knee in adults with Kashin-Beck disease: an 18-year follow-up

Zhan-Kui Jin  1 , Cui-Xiang Xu  2 , Xiang-Hui Dong  1 , Ming Ling  1 , Ming Chen  1 , Zhi Yi  1 , Shi-Zhang Liu  1 , Xue-Yuan Wu  1 , Zheng-Ming Sun  1 , Yan-Hai Chang  1
Affiliations

Long-term outcomes of arthroscopic debridement of the knee in adults with Kashin-Beck disease: an 18-year follow-up

Zhan-Kui Jin et al. J Int Med Res. 2021 Oct.

Abstract

Objective: Kashin-Beck disease (KBD) is an endemic degenerative joint disease with a high disability rate. We retrospectively evaluated the 18-year clinical follow-up outcomes of adult patients with KBD who underwent arthroscopic debridement for knee osteoarthritis.

Methods: Thirty-one patients with KBD (31 knees) underwent arthroscopy for knee osteoarthritis. The visual analog scale (VAS) score, walking distance, knee mobility, and patients' self-evaluated improvement in clinical symptoms were retrospectively evaluated before and 18 years after the operation.

Results: The patients' self-evaluated clinical symptoms showed considerable improvement at 2, 6, and 8 years after surgery but deteriorated at 10 and 18 years after surgery. Knee mobility was greater after than before arthroscopy but decreased from 6 to 18 years postoperatively. The VAS score for knee pain was high before the operation, decreased at 2 years postoperatively, increased at 6 years postoperatively, and was significantly lower at 18 years postoperatively than before surgery. The walking distance was significantly longer at 2, 6, and 8 years postoperatively than preoperatively.

Conclusions: Arthroscopic treatment may be an effective therapy for adult patients with KBD who develop knee osteoarthritis. In this study, arthroscopy had a long-term effect on patients with KBD who had Kellgren-Lawrence grade <IV osteoarthritis.

Keywords: Kashin–Beck disease; arthroscopy; debridement; knee; mobility; osteoarthritis; pain; walking distance.

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Conflict of interest statement

Declaration of conflicting interest: The authors declare that there is no conflict of interest.

Figures

Figure 1.
Figure 1.
Physical characteristics of patients with Kashin–Beck disease and arthroscopic findings of synovial proliferation and cartilage and meniscus injuries. (a) The physical characteristics of adults with Kashin–Beck disease include short stature, varus or valgus knee deformity, lameness, restricted movement, and limited knee joint activity, which seriously affect patients’ daily life. (b) Synovial hyperplasia and synovial thickening were found under arthroscopy, and some villi resembled corals or sheep tails. (c) The cartilage showed full-thickness loss, and the subchondral bone was exposed. (d) The torn meniscus and damaged cartilage were trimmed.
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