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Permanent URI for this collectionhttps://hdl.handle.net/11443/932
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Item Is Hyperflexion Possible with the Solitary Use of High-Flexion Insert in Knee Replacement Preserving the Posterior Cruciate Ligament? (Mid-term Results)(AVES, 2018-01-01) Ozden, Vahit Emre; Dikmen, Goksel; Uzer, Gokcer; Tozun, Ismail RemziObjective: 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 degrees and above in knees that had a preoperative range of flexion of 115 degrees 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.Item Clinical outcomes of single-bundle versus double-bundle ACL reconstruction in adolescent elite athletes: A retrospective comparative study(TURKISH ASSOC ORTHOPAEDICS TRAUMATOLOGY, 2022-01-01) Toker, Berkin; Erden, Tunay; Dikmen, Goksel; Ozden, Vahit Emre; Firatli, Goktug; Taser, OmerObjective: The aim of the study was to evaluate the single bundle (SB) and double bundle (DB) anterior cruciate ligament (ACL) reconstruction in terms of graft survival, complications, and patient reported functional outcomes in adolescent athletes. Methods: In this retrospective study, 89 elite adolescent athletes who underwent either SB or DB ACL reconstruction were included. All patients were then divided into two groups: group 1 including 51 patients with SB ACL reconstruction (31 male, 20 femaleItem Factors Leading to Re-revision Surgery Following the Index Total Hip Arthroplasty Revision: Mid-Term Results(BEZMIALEM VAKIF UNIV, 2019-01-01) Dikmen, Goksel; Ozden, Vahit Emre; Karaytug, Kayahan; Tozun, I. RemziObjective: The aim of this study was to evaluate the factors that led to re-revision surgeries in patients who underwent revision total hip arthroplasties (THA). Methods: A total of 352 revision THAs in 274 hips of 252 patients (January 2001-December 2012) were retrospectively analyzed. Patients with a history of a major component revision surgery, replacement of the modular components, debridement and irrigation with liner exchange in the presence of infection and a two-stage revision surgery were included in the study. The mean follow-up period after the revision surgery was 7.5 (range: 2 to 15) years. Results: A re-revision surgery was required in 17.6\% of the index THA revision patients (62 THA re-revisions/352 THA revisions). The mean time between the index revision and re-revision surgeries was 60.4 (range: 0.5 to 348) months. The most common reason for the second revision surgery was aseptic loosening (38 THA revisions