en Surgery Surgery case report case report <p style="line-height: 115%; text-indent: 0cm; margin-top: 0cm; margin-right: 0cm; margin-bottom: 0pt;"><span style="font-size: 14px;"><span style="font-family: times new roman;"><b><i><span style="color: blue; line-height: 115%;">Background:</span></i></b><font color="#000000"><b><span style="line-height: 115%;"> </span></b><span style="line-height: 115%;">Bilateral rupture of the patellar tendon is a very rare injury, which takes place in </span><span style="line-height: 115%;">relation to chronic systemic diseases. These injuries are known causes</span><span style="line-height: 115%;">. </span><span style="line-height: 115%;">Some of these causes are particular in patellar </span><span style="line-height: 115%;">tendon rupture and another are in quadriceps tendon rupture.</span></font></span></span></p> <p style="line-height: 115%; text-indent: 0cm; margin-top: 0cm; margin-right: 0cm; margin-bottom: 0pt;"><span style="font-size: 14px;"><span style="font-family: times new roman;"><b><i><span style="color: blue; line-height: 115%;">Case presentation:</span></i></b><span style="line-height: 115%;"><font color="#000000"> 70-year-old diabetic man with simultaneous bilateral patellar tendon disruption of proximal insertion without trauma, receiving long-term hemodialysis.</font></span></span></span></p> <p style="line-height: 115%; text-indent: 0cm; margin-top: 0cm; margin-right: 0cm; margin-bottom: 0pt;"><span style="font-size: 14px;"><span style="font-family: times new roman;"><b><i><span style="background: white; color: blue; line-height: 115%;">Conclusions:</span></i></b><font color="#000000"><b><span style="background: white; line-height: 115%;"> </span></b><span style="line-height: 115%;">In the present study, we report a case of patellar tendon rupture that has two differences with literature: first, renal failure is a known risk factor for quadriceps tendon rupture, and secondly, the prevalent age of patellar tendon rupture is less than 40 years. Clinical picture, diagnosis, pathogenesis and treatment are discussed. Finally, the literature is reviewed based on previous studies.</span></font></span></span></p> Bilateral, Hemodialysis, Patellar tendon, Rupture 306 311 http://caspjim.com/browse.php?a_code=A-10-782-1&slc_lang=en&sid=1 Ali Torkaman alitorkaman@yahoo.com 100319475328460013161 100319475328460013161 No Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran Alireza Yousof Gomrokchi arugomrokchi@gmail.com 100319475328460013162 100319475328460013162 Yes Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran Omid Elahifar condrud@gmail.com 100319475328460013163 100319475328460013163 No Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran pooyan barmayoon pooyan.b808@gmail.com 100319475328460013164 100319475328460013164 No Firoozgar Clinical Research and Development Center, (FCRDC) , Iran University of Medical Sciences, (IUMS) , Tehran, Iran Seyedeh Fahimeh Shojaei shojaee.fahimeh@yahoo.com 100319475328460013165 100319475328460013165 No Firoozgar Clinical Research and Development Center, (FCRDC) , Iran University of Medical Sciences, (IUMS) , Tehran, Iran