Is Hyperflexion Possible with the Solitary Use of High-Flexion Insert in Knee Replacement Preserving the Posterior Cruciate Ligament? (Mid-term Results)
Objective:For evaluating the early midterm results of our patients who underwent total knee replacement allowing for hyperflexion and for identifying the factors affecting the range of flexion in particular.Methods:A total of 150 knees of 95 patients who underwent total knee replacement using a high...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Galenos Publishing House
2018-10-01
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| Series: | Bezmiâlem Science |
| Subjects: | |
| Online Access: |
http://bezmialemscience.org/archives/archive-detail/article-preview/s-hyperflexion-possible-with-the-solitary-use-of-h/20078
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| Summary: | Objective:For evaluating the early midterm results of our patients who underwent total knee replacement allowing for hyperflexion and for identifying the factors affecting the range of flexion in particular.Methods:A total of 150 knees of 95 patients who underwent total knee replacement using a high-flexion cruciate retaining insert were evaluated. The patients were followed up for a mean of 8.5 (3.5-11) years. The knee joints were assessed pre- and postoperatively and at the final follow-up using the Knee Society Scoring System and their ranges of motion were recorded. The component survival was also investigated.Results:The mean preoperative knee score was 49.1±12.0, the mean functional score was 48.9±14.1 and the mean range of flexion was 119.3±18.9 degrees. The same values of the follow-up improved on 92.9±8.2 (p<0.0001), 90.7±10.6 (p<0.0001) and 128.0±11.5 degrees (p<0.0001), respectively. A moderate correlation was detected between the preoperative and postoperative ranges of flexion (r=0.623, p<0.0001). There was an insert revision of one knee (0.6%) because of early infection. No revision was required owing to aseptic loosening. Analysis using the ROC revealed the probability of postoperative hyperflexion of 130° and above in knees that had a preoperative range of flexion of 115° and above.Conclusion:The postoperative range of flexion was found to correlate with the preoperative range of flexion. The results of our study showed that a higher range of flexion is not possible with the solitary use of high-flex Cruciate Retaining insert and the preoperative range of flexion is an important factor in attaining hyperflexion even with the use of such inserts. |
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| ISSN: | 2148-2373 2148-2373 |