Understanding Hip Impingement Hip impingement, formally called femoroacetabular impingement or FAI, happens when the shape of your hip bones causes them to contact each other before normal range of motion is achieved. This premature contact limits movement and can cause pain, particularly in positions of deep hip flexion or rotation. The condition results from variations in bone shape that developed during growth. Some people have a bump on their femoral head or neck. Others have a socket that covers too much of the femoral head. These variations are common in the general population. Many people have impingement morphology without ever experiencing symptoms. Morphology creates potential. Activity and load determine symptoms. Why Hip Impingement Happens Cam morphology: Extra bone on the femoral head or neck. Pincer morphology: Excessive acetabular coverage. Mixed morphology: Combination of cam and pincer features. Developmental factors: Bone shape develops during adolescence. Activity influence: Certain activities during growth may influence morphology. Exercises for Hip Mobility These exercises maintain hip mobility within available range. JME 153 Complete 6-8 smooth repetitions each side. Controlled hip work within tolerance. JME 154 Perform 6-8 controlled repetitions each side. Multi-directional hip mobility. JME 155 Complete 6-8 smooth repetitions. Hip work avoiding impingement positions. JME 156 Perform 6-8 controlled repetitions. Gradual range exploration. Start your free trial for hip programming. Cam vs. Pincer Morphology Understanding the two main types: Cam morphology: A bump on the femoral head or neck creates friction during motion. More common in young, active males. Creates problems with flexion and internal rotation. Pincer morphology: The acetabulum extends too far over the femoral head, limiting motion. More common in middle-aged females. Restricts overall range of motion. Mixed: Most people with symptomatic FAI have elements of both types. Additional Hip Exercises JME 161 Complete 6-8 controlled repetitions each side. Hip rotation work. JME 100 Perform 6-8 controlled repetitions. Spine mobility supports hip function. JME 101 Complete 6-8 gentle repetitions. Integrated movement. JME 102 Perform 6-8 slow repetitions. Full body coordination. Morphology vs. Symptoms Understanding the relationship: High prevalence: Many people have FAI morphology on imaging without symptoms. Activity matters: Symptoms often appear with activities that stress the morphology. Load tolerance: Individual capacity to tolerate impingement positions varies. Progressive potential: Repeated impingement can lead to labral or cartilage damage over time. Managing Hip Impingement Strategies for living with impingement morphology: Activity modification: Avoid positions that consistently provoke symptoms. Technique adaptation: Adjust movement patterns to reduce impingement loading. Maintain mobility: Work hip range within comfortable limits. Build strength: Strong hip muscles support the joint. Programming Considerations Work within available range without forcing into impingement. Modify activities that consistently cause symptoms. Build strength to support the hip joint. Join simplmobility for hip programming. Common Mistakes Stretching into impingement: Trying to stretch past bony limits. Ignoring symptoms: Continuing provocative activities despite pain. Catastrophizing: Viewing impingement morphology as necessarily problematic. Inactivity: Avoiding all hip movement due to fear. Progression Strategies Work within available range consistently. Modify rather than eliminate activities. Build strength to support the joint. References Griffin, D. R., Dickenson, E. J., O'Donnell, J., et al. (2016). The Warwick Agreement on femoroacetabular impingement syndrome (FAI syndrome). British Journal of Sports Medicine, 50(19), 1169-1176. https://pubmed.ncbi.nlm.nih.gov/27629403/ Agricola, R., Heijboer, M. P., Bierma-Zeinstra, S. M., Verhaar, J. A., Weinans, H., & Waarsing, J. H. (2013). Cam impingement causes osteoarthritis of the hip: a nationwide prospective cohort study (CHECK). Annals of the Rheumatic Diseases, 72(6), 918-923. https://pubmed.ncbi.nlm.nih.gov/22730371/ Frequently Asked Questions Is hip impingement genetic? Hip bone shape has genetic components. However, activity during adolescence also influences bone development. Both genetic and environmental factors contribute to FAI morphology. Can hip impingement be cured without surgery? The bony morphology cannot change without surgery. However, many people manage symptoms successfully through activity modification, technique adaptation, and exercise. Surgery is reserved for cases that do not respond to conservative management. Does hip impingement always cause arthritis? Not necessarily. While impingement is a risk factor for hip arthritis, not everyone with FAI develops arthritis. Activity modification and avoiding repetitive impingement loading may reduce this risk. How common is hip impingement? FAI morphology is common. Studies show cam morphology in 20-30% of the general population and pincer morphology in about 15-20%. Most people with this morphology never develop symptoms.