The infrapatellar fat pad is identified as an extrasynovial structure which is located on the anterior of the knee, away from the area of the patella. Itâ€™s characterized as a mobile formation and its shape, volume and pressure is altered with the movement of the knee. The infrapatellar fat pad attaches anteriorly to the immediate patellar tendon and inferior pole of the patella, posteriorly attaching to the intercondylar notch of the femur and in some individuals, the ACL. It is a heavily vascularized structure, also innervated by branches of the obturator, saphenous and the well-known peroneal nerve. The fibres which denote pain from the stimulation of the nerve cells are most dense in the central and lateral sections of the infrapatellar fat pad.
Injuries or conditions affecting the infrapatellar fat pad may commonly result from a direct blow or as a result of chronic irritation due to hyperextension knee injuries. Both conditions present a series of painful symptoms which can be debilitating. Individuals or athletes with these types of complications experience knees that hyperextend and they may walk with poor quad control and knee hyperextension. The IPFP, or infrapatellar fat pad, can also become injured as a result of direct trauma to the knee, either through a blunt force or through shear injury along with a patellar dislocation or ACL rupture.
Individuals with hyperextension knee injuries originating from infrapatellar fat pad issues often describe a sharp, burning and/or aching deep pain on either side of the patellar tendon. Certain sports or physical activities, including maximal knee extensions or basic activities which require active knee extension, such as going upstairs or prolonged knee flexion, may aggravate the symptoms of hyperextension knee injuries from the IPFP.
Hyperextension knee injuries can vary from acute to chronic and these are generally painful. The infrapatellar fat pad, abbreviated as IPFP, is one of the most frequently affected structures due to hyperextension knee injuries. In the presence of an acute knee hyperextension injury, for instance, when an athlete is tackled in rugby, the posterior cruciate ligament, or PCL and/or the posterior lateral corner, or PLC, of the knee may suffer injury. For more information, please feel free to ask Dr. Jimenez or contact us at (915) 850-0900.
The information herein on "Hyperextension Knee Injuries Associated with Sports" is not intended to replace a one-on-one relationship with a qualified health care professional or licensed physician and is not medical advice. We encourage you to make healthcare decisions based on your research and partnership with a qualified healthcare professional.
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Dr. Alex Jimenez DC, MSACP, RN* CIFM*, IFMCP*, ATN*, CCST
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