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Introduction: Only 70–85% of patients that had total knee arthroplasty (TKA) are satisfied with their knees. The need for a near to normal knee kinematics is crucial and maybe the solution to their needs. Addressing the cruciate ligaments during surgery along with the extent of arthrosis may give a solution to this problem. Material and methods: One hundred consecutive patients in whom a total knee arthroplasty was indicated and performed were prospectively documented. During the knee replacement surgery, the condition of the anterior and posterior cruciate ligaments and the degree of osteoarthritis (OA) in the medial and lateral compartments as well as in the patello-femoral joint were documented using the Outerbridge classification. The patients’ average age was 72.3 years, with the majority being female. In all patients, a total bi-compartmental knee replacement was indicated. Results: Our results showed that in 78% of all patients the anterior, and in 98% the posterior cruciate ligament was still intact. Seventy-one percent of cases suffered from grade 4 medial osteoarthritis, 19% from grade 3 and 10% from grade 2. Thirty-six of patients suffered from grade 4 lateral osteoarthritis, 36% from grade 3, 24% from grade 2 and 4% from grade 1. Grade 4 patello-femoral osteoarthritis was present in 32% of all patients, grade 3 in 60% and grade 2 in 8% of all patients. Discussion: The goal of arthroplasty is to approximate the function of a normal knee. The retention of the anterior cruciate ligament (ACL) allows for better knee, kinematics, improved proprioception, increased flexion and an overall improvement in knee function. The decreased constraint that is possible with retention of both cruciates may decrease implant stresses and improve the implant survivorship. The distribution of OA shows that the medial and patello-femoral compartments of the joint are primarily affected. This could also allow for a more conservative and patient-tailored prosthetic design.

Background: Arthroscopic knee surgery including partial meniscectomy & meniscal repair are of the world's most performed surgical procedures. Magnetic Resonance arthrography is the cornerstone imaging modality in evaluating postoperative symptomatic patients.Objective: This study aimed to evaluate the diagnostic value of conventional MR compared to MR arthrography in the diagnosis of recurrent meniscal tear. Subjects and methods: Our prospective cross-sectional study included 20 patients with postoperative meniscus surgery admitted to Orthopedic Department, Suez Canal University Hospital through the period from April 2020 to September 2021. Results: In the meniscus surgery group (total 20 patients), 6 studied cases (30%) were treated with meniscal repair, 13 studied cases (65%) had meniscectomy and one patient (5%) had meniscal transplants. Conventional MRI showed 77% sensitivity, 58% specificity and 67.5% accuracy in the meniscal surgeries group. MRI and MRA showed high agreement (K= 0.66) in meniscal transplant and meniscectomy less than 25%, while MRI has a low agreement (K=0.1 &0.5) with MRA in meniscal repair and meniscectomy more than 25%. Conclusions: Conventional MRI alone has low sensitivity and specificity in the assessment of recurrent tears in postmeniscal surgeries where MR arthrography is essential in the detection of recurrent meniscal tears in cases of meniscal repair and partial meniscectomy more than 25%. However, when meniscus resection is minimal (less than 25%) conventional MRI is usually enough for diagnosis.

Background: Shoulder arthrography is an accurate method that can help in diagnosing several diseases. When shoulder arthrography is done combined with magnetic resonance imaging (MRI), a more comprehensive assessment of the cartilaginous structures of the glenohumeral joint is performed. Objective: This study aims to compare the anterior with the posterior ultrasound-guided arthrography injection approaches in achieving optimal needle placement, ensuring the accuracy of shoulder arthrography injections. Subjects and Methods: A total of 38 individuals (suffering from shoulder dislocation) were enrolled, in the study. The efficacy of the technique was evaluated relative to the success or failure of contrast medium administration into the glenohumeral joint, and the number of attempts required to achieve that success. Results: The success rate among the anterior approach group was 84.2% versus 89.5% in the posterior approach group. The mean number of trials for the anterior and posterior approaches showed no statistically significant difference while the mean injected volume with the anterior approach was significantly lower than that of the posterior approach group (P-Value: 0.006). Conclusion:The posterior approach has a slight advantage over the anterior approach regarding the injected volume of the contrast medium. However, there were better results yet non-statistically significant regarding the anterior and posterior approaches accuracy, pain tolerance, and the number of trials.