新規理学療法ジャーナル

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Clinical Utility of Cruciate Retaining Total Knee Arthroplasty with Fourpegged Tibial Baseplate in the Valgus Knee: A Concise Minimum 4 Year Follow-up

Shaun E Chandran, Sanaz Hariri, Michael Glotzbecker, Henrik Malchau and Young-Min Kwon

Introduction: The four pegged tibial base plate in the cruciate retaining (CR) total knee is a modern design used in the treatment of gonarthritis. This design allows preservation of host bone, smaller incisions, and ease with removal of implant in the revision setting. In this study, we investigate the outcome of the four pegged tibial base plate in the treatment of valgus knee. Methods: We performed a retrospective review of 39 TKA who had a four pegged TKA in 38 consecutive patients with an average of 68 month follow-up (52-98 months). There were 29 females and 9 males, with mean age of 67 (range 27 to 89 years old). Radiographs, clinical notes, and functional scores were evaluated. Results: The average postoperative range of motion was 119 ± 9 degrees, which increased compared to the preoperative range of motion of 101 ± 14 degrees (p<0.0001). Postoperative knee function scores were 95 ± 5, (range 82 to 100). Additionally, the knee scores were 91 ± 14, (range 45 to 100). Survivorship for this cohort with endpoint of revision was 94.8% at a minimum of 4 years. All patients had good coronal and anterior posterior stability postoperatively. There were two complications; one patient was revised for patellar mal-tracking and the other for an incompetent posterior cruciate ligament. Conclusions: To our knowledge, this is the first study reviewing retrospectively the four pegged CR TKA in the treatment of valgus gonarthritis. Our results support the use of the four pegged tibial base plate in valgus knee.