ANATOMICAL STUDY OF THE HUMAN ANTERIOR CRUCIATE LIGAMENT FOR ITS RECONSTRUCTION (a cadaveric, arthroscopic and MRI study) External Fixator for Trochanteric Fractures in Elderly High Risk Patients Treatment of Nonunion of Supracondylar Femoral Fractures in Elderly Patients by Cemented Rotating-hinge Total Knee Replacement Arthroscopic Osteochondral Autologous Grafts for Management of Small Osteochondral Defects of the knee Arthroscopic Treatment of Traumatic Anterior Bony Ankle Impingement Double Bundle Anterior Cruciate Ligament Reconstruction: A Short Term Study Outcome of Arthroscopic Rotator Cuff Repair in Different Age Groups Short-Term results after treatment of Large Sized Cartilage Lesions of the Medial Femoral Condyle (MFC) with Matrix Autologous Chondrocyte Transplantation (MACT) Arthroscopic Ankle Arthrodesis for Chronic Post- Traumatic End Stage Ankle Arthritis in Middle Age Adults Distally attached hamstring tendons for treatment of isolated tears of anterior cruciate ligament in athletes. Long term comparative study between results of arthroscopic ACL reconstruction using patellar or hamstring tendons-15 years follow up. Hamstring Press-fit Fixation Technique of (ACL) Anterior Cruciate Ligament Reconstruction: 5 Years Follow-up. Results of Latarjet procedure for recurrent traumatic anterior shoulder dislocation in young adult athletes. Evaluation of the results of arthroscopic meniscal repair. Patelloplasty without resurfacing of the patella in total knee replacement in patients without severe patellofemoral osteoarthritis Patelloplasty without resurfacing of the patella in total knee replacement in patients without severe patellofemoral osteoarthritis Arthroscopic Remplissage with Bankart repair for the Treatment of Glenohumeral Instability with Hill-Sachs Lesion Clinical results after treatment of Large Sized CartilageLesions of the Medial Femoral Condyle (MFC) with Matrix Autologous Chondrocyte Transplantation (MACT)