Effect of posterior capsular release on intraoperative joint gap mismatch in the mid-flexion range during posterior-stabilized total knee arthroplasty

Katagiri, Hiroki; Saito, Ryusuke; Shioda, Mikio; Jinno, Tetsuya; Watanabe, Toshifumi

doi:10.1016/j.jos.2022.11.019

Cited by 1 publication

(1 citation statement)

References 33 publications

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“…The center component gap and joint varus angle were measured at 0°, 10°, 45°, 90°, and maximum flexion under 40 lbf (178 N) of distraction force, consistent with our previous study (Fig. 1) [10,12]. Flexion angles were established and held by the first assistant surgeon with reference to a goniometer.…”

Section: Posteromedial Vertical Capsulotomy and Intraoperative Joint ...supporting

confidence: 83%

Effect of posteromedial vertical capsulotomy with medial collateral ligament liberation on intraoperative medial component gap mismatch between extension and mid‐flexion during total knee arthroplasty

Katagiri,

Saito,

Shioda

et al. 2023

Knee surg. sports traumatol. arthrosc.

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Purpose The aim of this study was to quantify the effect of posteromedial vertical capsulotomy on intraoperative component gaps and angles from extension through mid-flexion to flexion during total knee arthroplasty (TKA). Methods In the present study, 47 cases of primary posterior-stabilized TKA using the measured resection technique for varus knee osteoarthritis (hip-knee-ankle angles < 0°) were reviewed. Component gaps and angles at 0°, 10°, 45°, 90°, and maximum flexion were measured intraoperatively, before and after posteromedial vertical capsulotomy. Differences in pre-and post-posteromedial vertical capsulotomy medial and lateral component gaps and angles and medial component gap mismatches among knee flexion angles were assessed using the Wilcoxon signed rank test for two paired samples. ResultsThe medial component gaps at 0° and 10° of flexion of post-posteromedial vertical capsulotomy were significantly greater, exceeding the minimal detectable change, than those pre posteromedial vertical capsulotomy (change of the gap after the procedure at 0° of flexion was 0.7 ± 0.7 mm and at 10° of flexion was 0.8 ± 0.8 mm; all P values < 0.05). The medial component gap mismatches between both 0° and 10°, and 45°, 90°, and maximum flexion were significantly smaller post posteromedial vertical capsulotomy than pre posteromedial vertical capsulotomy, with the values of the change exceeding the minimal detectable change (change of the gap mismatch after the procedure: knee flexion at 0° and 45° was − 0.6 ± 0.9 [mm], at 0° and 90° was 0.7 ± 1.0, at 0° and maximum flexion was − 0.6 ± 1.2, at 10° and 45° was − 0.7 ± 0.9, at 10° and 90° was − 0.8 ± 0.9, at 10° and maximum flexion was − 0.7 ± 1.1; all P values < 0.05). Conclusions Posteromedial vertical capsulotomy increased the medial component gaps during knee extension but not during mid-flexion or full flexion during posterior-stabilized TKA. Posteromedial vertical capsulotomy improved mild medial component gap mismatch between extension and mid-flexion and full flexion during posterior-stabilized TKA. Surgeons can consider posteromedial vertical capsulotomy when there is intraoperative constriction of the medial component gap during extension in patients undergoing posterior-stabilized TKA.

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Section: Posteromedial Vertical Capsulotomy and Intraoperative Joint ...supporting

confidence: 83%

Effect of posteromedial vertical capsulotomy with medial collateral ligament liberation on intraoperative medial component gap mismatch between extension and mid‐flexion during total knee arthroplasty

Katagiri,

Saito,

Shioda

et al. 2023

Knee surg. sports traumatol. arthrosc.

Self Cite

View full text Add to dashboard Cite

show abstract

Effect of posterior capsular release on intraoperative joint gap mismatch in the mid-flexion range during posterior-stabilized total knee arthroplasty

Cited by 1 publication

References 33 publications

Effect of posteromedial vertical capsulotomy with medial collateral ligament liberation on intraoperative medial component gap mismatch between extension and mid‐flexion during total knee arthroplasty

Effect of posteromedial vertical capsulotomy with medial collateral ligament liberation on intraoperative medial component gap mismatch between extension and mid‐flexion during total knee arthroplasty

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