Ranawat Amar S, Ranawat Chitranjan S, Slamin John E, Dennis Douglas A
Ranawat Orthopaedic Center LLC, New York, USA.
Orthopedics. 2006 Sep;29(9 Suppl):S68-70.
Painless and painful patellar crepitation and patellar clunk syndrome represent a spectrum of peripatellar scar formation particular to posterior-stabilized knee components, although it may occur with cruciate-retaining designs as well. The formation of peripatellar inflammatory scar tissue is related to implant design and surgical technique, with microscopic and gross findings indicating varying degrees of inflammatory fibrous hyperplasia. These well recognized clinical entities have an incidence ranging between 1% and 5% in different series. The majority of patients with mildly painful or painless patellar crepitation will improve within 6 months to 1 year. In patients with more disabling symptoms such as catching, early intervention with open scar excision should be considered.
无痛性和疼痛性髌股摩擦音及髌股卡顿综合征代表了后稳定型膝关节假体特有的髌周瘢痕形成范围，尽管在保留交叉韧带的设计中也可能出现。髌周炎性瘢痕组织的形成与植入物设计和手术技术有关，微观和宏观检查结果表明存在不同程度的炎性纤维增生。这些公认的临床病症在不同系列中的发生率在1%至5%之间。大多数轻度疼痛或无痛性髌股摩擦音的患者将在6个月至1年内改善。对于有更严重功能障碍症状（如卡顿）的患者，应考虑早期进行开放性瘢痕切除术干预。
