The Relationship between Posterior Tibial Slope and Tear of Anterior Cruciate Ligamen
Volume 9, Issue 1, Winter 2011, Pages 8-12
https://doi.org/10.22034/ijos.2020.121021
Seyyed Morteza Kazemi, Siyavosh Hemmati Eslamlou, Arash Maleki, Reza Zandi, Mohammad Ali Jalili, Keyghobad Ashoori, Farshad Safdari
Abstract Background: The role of increased posterior tibial slope in rupture of the anterior cruciate ligament (ACL) is controversial. The purpose of current study was to determine the effect of posterior slope on the ACL injury. Methods: In a case control study, 61 consecutive cases with ACL injury, who were candidates for reconstruction, were compared with 61 persons with normal knees who were matched for age and sex, over a 2-year period at a teaching hospital in Tehran, Iran. The posterior tibial slope angles were measured on true lateral radiographs on all the cases. The measurement variations were analyzed between the two groups. Results: The mean posterior tibial slope was 9.4±1.8 degrees in controls and 12.3±4.4 in patients with ruptured ACL (p < .001). The incidence of tibial slope greater than 10 degrees in patients with ruptured ACL was 3.1 times greater than that of the controls. Conclusion: This study suggests that increased tibial slope angle may contribute to increased risk for ACL rupture.
Effect of Knee Brace in Changing Plantar Pressure in Knee Osteoarthritis (A Biomechanical Study)
Volume 8, Issue 4, Autumn 2010, Pages 179-186
https://doi.org/10.22034/ijos.2020.121113
Farshad Safdari, MSc, Gholamreza Aminian, PhD, Mahmoud Bahramizadeh, PhD, Seyyed Ebrahim Mousavi, MD, Seyyed Morteza Kazemi, MD, Naser Valai, Farhood Ershadi, MSc, Mohammad Sadeghzadeh, Msc
Abstract Background: There are different conservative treatments for the osteoarthritis of the medial compartment of the knee and valgus bracing is considered as important one. The purpose of current study was to examine the efficacy of the brace unloading in changing floor reaction force.Methods: Ten patients with osteoarthritis in medial compartment of the knee contributed in this quasi-experimental study with and without using knee braces. The magnitude of the mediolateral vector of the ground reaction force and center of pressure displacement in mediolateral direction were measured by using a force plate system (Kistler, Swiss). Statistical tests were used to analyze the data.Results: The mean of displacement of center of pressure (COP) was 25 mm and 5 mm with and without brace, respectively (p < /em>≥.05). The mean of mediolateral vector of the ground reaction force was 28.17 with and 22.45 without brace and there was no significant difference (p < /em>≥.05). In contrast, there was a significant difference between the magnitudes of the mediolateral vector of the ground reaction force within pre-and post-brace situations (p < /em>=.000).Conclusion: Valgus bracing can reduce the magnitude of the mediolateral vector of the ground reaction force and displacement of the COP in the mediolateral direction. It might be concluded that this method can reduce the pain and instability and improve function in patients with osteoarthritis of the medial compartment of the knee.
Late Treatment of Bilateral Congenital Knee Dislocation (Report of One Case)
Volume 8, Issue 3, Summer 2010, Pages 139-143
https://doi.org/10.22034/ijos.2020.121121
Abstract Congenital dislocation of the knee ranges from hyperextension of the knee to complete translation of the femur on the tibia. Treatment is usually started in very early infancy. In this report, a 16-year-old girl presented with a grade III untreated congenital dislocation of the knee. She received surgical treatment at this late age, and managed to stand upright and walk.
Diagnosis of Syndesmosis Sprain (Comparison between Clinical and Radiographic Examination)
Volume 4, Issue 4, Summer 2006, Pages 32-38
https://doi.org/10.22034/ijos.2020.121242
Seyed Morteza Kazemi, MD, Ali Akbar Esmaeileijah, MD, Ali Akbar Esmaeileijah, MD, Farshad Adib, MD
Abstract Background: In spite of common occurrence of ankle sprains, syndesmosis injuries are rare, but very debilitating and frequently misdiagnosed.Methods: In 100 patients the sensitivity and specificity of standard radiography and physical examination were tested against MRI of the ankle for the diagnosis of syndesmosis sprain. The clinical tests included: syndesmosis tenderness, squeeze test, external rotation test, and crossed-leg test.Results: Four patients had syndesmosis sprain. In comparison with MRI, the sensitivity and specificity for standard radiography were 25% and 100%. The values for crossed-leg test they were 100%, 74%, for external rotation test 100%, 62.5%, for squeeze test 75%, 61.5%, and for tenderness of syndesmosis were 100%, 58% respectively.Conclusions: Physical examination has high sensitivity and low specificity for diagnosis of syndesmosis sprain. Crossed-leg test is more accurate than the other tests. AP and mortise views have low sensitivity and high specificity. Clinical evaluation and regular radiographs do not yield an accurate account of tibiofibular syndesmotic injury. MRI is recommended in athletes or those with equivocal findings.