There was a significant correlation between PTS and postoperative anterior knee static stability in this study. Patients with a steeper medial or lateral PTS showed a higher risk of ATT ≥5 mm at thresholds of 5.6° and 3.8°, respectively.

Background:The effect of selective and non-selective cyclooxygenase (COX) inhibitors on tendon healing was variable. The purpose of the study was to evaluate the influence of non-selective COX inhibitor, ibuprofen and flurbiprofen axetil and selective COX-2 inhibitor, celecoxib on the tendon healing process in a rabbit model.Methods:Ninety-six New Zealand rabbits were used as rotator cuff repair models. After surgery, they were divided randomly into four groups: Ibuprofen (10 mg·kg−1·d−1), celecoxib (8 mg·kg−1·d−1), flurbiprofen axetil (2 mg·kg−1·d−1), and control group (blank group). All drugs were provided for 7 days. Rabbits in each group were sacrificed at 3, 6, and 12 weeks after tendon repair. Tendon biomechanical load failure tests were performed. The percentage of type I collagen on the bone tendon insertion was calculated by Picric acid Sirius red staining and image analysis. All data were compared among the four groups at the same time point. All data in each group were also compared across the different time points. Qualitative histological evaluation of the bone tendon insertion was also performed among groups.Results:The load to failure increased significantly with time in each group. There were significantly lower failure loads in the celecoxib group than in the control group at 3 weeks (0.533 vs. 0.700, P = 0.002), 6 weeks (0.607 vs. 0.763, P = 0.01), and 12 weeks (0.660 vs. 0.803, P = 0.002), and significantly lower percentage of type I collagen at 3 weeks (11.5% vs. 27.6%, P = 0.001), 6 weeks (40.5% vs. 66.3%, P = 0.005), and 12 weeks (59.5% vs. 86.3%, P = 0.001). Flurbiprofen axetil showed significant differences at 3 weeks (failure load: 0.600 vs. 0.700, P = 0.024; percentage of type I collagen: 15.6% vs. 27.6%, P = 0.001), but no significant differences at 6 and 12 weeks comparing with control group, whereas the ibuprofen groups did not show any significant difference at each time point.Conclusions:Nonsteroidal anti-inflammatory drugs can delay tendon healing in the early stage after rotator cuff repair. Compared with nonselective COX inhibitors, selective COX-2 inhibitors significantly impact tendon healing.

The incidence of residual impingement lesions after arthroscopic pincer-type FAI correction was 63.3 %. The residual rate was 14.48 %. The residual impingement lesions were primarily in the posterior portion of the acetabulum. The clinical outcomes were associated with the residual rate of bony impingement lesions. The patients with residual rates >20 % exhibited significantly lower clinical scores and satisfaction rates.

BackgroundTo determine the clinical and MRI outcomes after modified arthroscopic all-inside repair for lateral meniscal tears anterior to the popliteal hiatus.MethodsPatients who underwent modified arthroscopic all-inside repair for lateral meniscal tears anterior to the popliteal hiatus at our institution were identified. The clinical assessment consisted of the symptoms of meniscal tears, McMurray test, and patient-reported outcomes (Lysholm score, Tegner score, and International Knee Documentation Committee (IKDC) score). The status of meniscal healing was assessed using postoperative MRI scan.ResultsTwenty-five patients met the inclusion criteria. The mean age was 27.60 ± 8.37 years (range, 16 to 43 years). The mean follow-up period was 26.04 ± 2.88 months (range, 24 to 36 months). At final follow-up, the symptoms of meniscal tears disappeared in 23 patients with a negative McMurray test. The patient-reported outcomes of Lysholm, Tegner, and IKDC score improved significantly compared to the preoperative values (P = 0.001). No significant differences were observed in postoperative clinical outcomes between patients with or without concomitant ACL tears (P > 0.05). Postoperative MRI scan showed that the repaired lateral meniscus anterior to the popliteal hiatus obtained healing in 23 (92.0%) patients and no healing in 2 patients.ConclusionThis modified arthroscopic all-inside repair technique was safe and effective to treat lateral meniscal tears anterior to the popliteal hiatus, resulting in significantly improved clinical outcomes with a high healing rate and low risk of adjacent structures injury.