Iranian Journal of Orthopedic Surgery

Abstract Introduction: Knee osteoarthritis is one of the most common causes of joint pain and destruction in people over forty years old. This research has investigated the effect of using a drain on Fe, TIBC, and Hb levels in knee joint replacement surgery in a 6-months period, as a prospective cohort study.
Materials & Methods: All patients who were candidates for knee joint replacement in one hospital, were included in a prospective study. The grouping of patients included those who had post-operative drain (45 patients)and the ones with no drain (45 cases). and the control group were those who did not undergo drainage after the intervention. Fe, TIBC, and Hb levels were compared 3 months post-surgery.
Results & Discussion: A total of 21 men and 69 women were in the case and control groups. The average age in the case group was 67.67 years and in the control group was 68.96. The confounding variables considered in this study, including age, gender, and underlying diseases (including hypertension, diabetes, and hypothyroidism) were examined in both groups, and there was no significant difference between the group with and without a drain; Therefore, the difference between the two groups in this study was caused by the blood indices. However, the ferritin level of preoperative patients was different in the two groups. The most important blood index that was significant in all analyzes was hemoglobin changes before and after the operation. Also, significant changes in TIBC were present.
Conclusion: Drain use in knee replacement surgery results in less HB drop. Good blood loss strajedy can lower the drop in TIBC in 3 months follow-up.

Abstract Abstract
Background: Reconstruction of anterior cruciate ligament (ACL) injuries using arthroscopic single-bundle method is a common procedure with a success rate of 83% to 95%. Some studies have shown that the transportal method for drilling the femoral tunnel results in a higher success rate than transtibial approach. Other studies show equal rate of success in both approaches. The aim of this study was to investigate which one of the two methods has nearest biomechanics to the original ACL and better outcome for patients.
Methods: This study was a cross sectional (prospective) follow up. The clinical results of the ACL reconstruction in military patients with pure ACL rupture were evaluated and followed up. In one group 26 ACL reconstruction was done using the transportal (TP) technique and in the other group 20 ligaments were reconstructed using the transtibial (TT) method.
Results: At the final follow-up, eight patients (40%) in the TT group and five cases (19.23%) in the TP group had a positive pivot test. Three patients (15%) in the TT group and nine patients (34.61%) in the TP group had a positive Lachman test. There was no statistically significant difference in the pivot test (P=0.06) and Lachman test (P=0.35) between the two groups. Mean Lysholm scores were 92.8 ± 2.5 and 93.2 ± 2.8 in the TT and the TP groups, respectively (P = 0.51). The averages of the graft angle were 68.7 ± 2.9 and 43.6 ± 4.1 in TT and the TP groups, respectively (p = 0.001). Any correlation between the graft angle and the patients’ concurrence (Lysholm score) after surgery (P>0.05) and any correlation between the graft angle and the instability testes (P>0.05) were not observed between the two groups.
Conclusion: No significant clinical difference was found between  the two techniques.
No significant clinical differences were found between two techniques and therefore, both of them can create good results.