The marrow dropsy, the central bone is superfluous may cause the knee joint ache;
骨髓水肿、中央性骨赘可导致膝关节疼痛；
AIM: To observe the effects of improving ache and recovering joint function of hyaluronic acid natrium by intra-articular injection in the treatment of special chondromalacia patellae.
目的：观察膝关节内注射透明质酸钠治疗特发性髌骨软骨软化症改善疼痛及恢复关节功能的效果。
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