Multiple Ligament Reconstruction for Absent Cruciate and a Congenital Short Femur Case Report and Review of the Literature.

Congenital short femur syndrome is a rare condition affecting about 0.017 of every 1,000 births. Patients frequently have ligamentous abnormalities, most frequently aplastic or hypoplastic cruciate ligaments. Advances in limb lengthening procedures have increased movement expectations for these patients, thus necessitating surgical treatment for their ligamentous abnormalities. An individual case is presented, including history, physical exam, and imaging demonstrating both the short femur and absent cruciate ligaments. A surgical reconstruction technique of the anterior cruciate ligament, posterior cruciate ligament, and posterolateral corner is described. At 1-year follow-up, the patient had 0° to 135° of ROM. He reported no pain but mild swelling experienced during squatting. His knee continues to be stable in all planes with a grade 1A Lachman exam and a grade 1 posterior drawer with no posterolateral corner laxity.