Prevention of Pseudo-patella Baja During Total Knee Arthroplasty

Overview

Journal Knee Surg Sports Traumatol Arthrosc

Publisher Wiley

Specialties Emergency Medicine
General Surgery
Orthopedics

Date 2014 Sep 3

PMID 25178535

Citations 9

Authors

Jai-Gon Seo

Young-Wan Moon

Sang-Min Kim

Sang-Hoon Park

Byung-Hoon Lee

Moon-Jong Chang

Byung-Chul Jo

Affiliations

Soon will be listed here.

Abstract

Purpose: Pseudo-patella baja (PPB) is a surgical complication that can arise from total knee arthroplasty and occurs when the patella tendon is not shortened but the level of the femorotibial joint line is elevated. The goal of this study was to assess the performance of a technique specifically designed to prevent the occurrence of PPB and its radiological results.

Methods: Ninety-nine patients undergoing total knee arthroplasty were included. Patients were divided into a non-correction group and a correction group. The correction group were applied an additional metal block in order to reduce the excess resection of the distal femur. To evaluate PPB, the change in the pre- and postoperative joint line was measured using the modified Blackburne-Peel Index (BPI).

Results: In the non-correction group, 68 of 74 cases showed an occurrence of PPB (92 %), in the correction group, 6 of 57 cases showed an occurrence of PPB (11 %). The preoperative-modified BPI of the non-correction group was not significantly different from that of the correction group (0.6 ± 0.1 vs. 0.6 ± 0.2). The modified BPI decreased significantly in the non-correction group after TKA (0.6 ± 0.1 vs. 0.2 ± 0.1, p < 0.05). However, the modified BPI did not change significantly in the correction group after TKA (0.6 ± 0.2 vs. 0.6 ± 0.2).

Conclusion: The comparison of preoperative and postoperative radiological results showed that our intervention maintained the joint line without elevation. We proposed an effective method to prevent various complications due to the joint line elevation that occur in PPB.

Level Of Evidence: III.

Citing Articles

Clinical Study and Finite Element Analysis on the Effects of Pseudo-Patella Baja After TKA.

Jiang S, Wei W, Li M, Zhou S, Zeng Y, Shen B Orthop Surg. 2024; 17(1):212-223.

PMID: 39575599 PMC: 11735365. DOI: 10.1111/os.14289.

Different Radiological Indices of Patellar Height Predict Patients' Diverse Outcomes Following Total Knee Arthroplasty.

Bi Z, Cai Y, Sun C, Shi X, Liao S, Liu J Clin Orthop Surg. 2024; 16(5):741-750.

PMID: 39364107 PMC: 11444939. DOI: 10.4055/cios23346.

Serial Change in Patellar Height after Tension Band Wiring of Patellar Fractures.

Cho J, Ko K, Park S, Lee S Medicina (Kaunas). 2024; 60(5).

PMID: 38792971 PMC: 11123053. DOI: 10.3390/medicina60050789.

The Effect of Severe Varus Deformity on Clinical and Radiographic Outcomes in Mechanical Aligned Total Knee Arthroplasty with Medial Stabilizing Technique.

Lee S, Jung J, Kim H, Kim J, Jung I, Kim J J Clin Med. 2024; 13(6).

PMID: 38541821 PMC: 10971238. DOI: 10.3390/jcm13061595.

Incidence of patella baja and pseudopatella baja in aseptic revision total knee arthroplasty.

Flevas D, Brenneis M, Nocon A, Gkiatas I, Pirzada W, Tsakotos G Arch Orthop Trauma Surg. 2024; 144(4):1703-1712.

PMID: 38488903 DOI: 10.1007/s00402-024-05234-4.

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