Abnormal Femoral Neck Morphology C4025621
An abnormality in the narrow area of the femur connecting the femoral head to the bone shaft. It can occur at any age and may increase risk of hip problems or fracture depending on severity.
Key facts at a glance
- ICD-10
- Q79.9
- ICD-11
- LA00.0
- Body system
- musculoskeletal
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Hip instability
Feeling of hip joint giving way or being unstable during weight-bearing activities.
Immediately if hip gives way or feels unstable, as this may indicate serious structural compromise.
Severe hip weakness
Significant reduction in hip muscle strength making it difficult to bear weight or climb stairs.
Immediately if sudden severe weakness occurs, as this could indicate fracture or avascular necrosis.
Hip pain
(musculoskeletal)Dull or aching pain in the hip joint, often worse with weight-bearing activities and movement.
Frequency: 70-80% of patients
Limping gait
(musculoskeletal)Abnormal walking pattern due to hip discomfort or structural changes affecting weight-bearing.
Frequency: 60-70% of patients
Limited hip range of motion
(musculoskeletal)Reduced ability to move the hip joint through its normal range, particularly with rotation and flexion.
Frequency: 65-75% of patients
Groin pain
(musculoskeletal)Pain radiating to the inner thigh and groin area, often exacerbated by weight-bearing or hip flexion.
Frequency: 40-50% of patients
Leg length discrepancy
(musculoskeletal)One leg appears shorter than the other due to femoral neck structural abnormality.
Frequency: 35-45% of patients
Hip clicking or catching
(musculoskeletal)Mechanical sensation or audible sound during hip movement due to abnormal bony architecture.
Frequency: 30-40% of patients
Fatigue with walking
(constitutional)Premature tiredness or exhaustion when walking or engaging in physical activities.
Frequency: 40-50% of patients
Buttock pain
(musculoskeletal)Pain in the buttock region that may radiate from the hip joint or be related to altered gait.
Frequency: 15-25% of patients
Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Clinical and radiographic surveillance
Regular orthopedic examinations with imaging to monitor femoral neck morphology and detect progressive changes. Includes assessment of gait patterns, hip range of motion, and pain levels.
Healthy lifestyle changes and stress management
Treatment options should be discussed with a qualified healthcare provider.
Hip strengthening and mobility program
Targeted physical therapy focusing on hip abductor and core strengthening to improve pelvic stability and reduce stress on the femoral neck. Includes stretching to maintain flexibility.
Additional treatment options
Femoral osteotomy or fixation
Surgical intervention to correct alignment abnormalities or stabilize the femoral neck. May involve realignment osteotomy or internal fixation depending on severity and patient age.
surgicalBone health optimization
General bone health management including calcium, vitamin D, and evaluation for bisphosphonate therapy when indicated. Aimed at improving bone quality and reducing fracture risk.
medicationFall prevention strategies
Environmental and behavioral modifications to reduce fall risk, including home safety assessment, balance training, and appropriate footwear guidance. Particularly important in elderly patients.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Abnormal Femoral Neck Morphology C4025621?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
American Academy of Orthopaedic Surgeons. Management of Femoroacetabular Impingement Syndrome. AAOS Clinical Practice Guideline. 2020.
Griffin DR, Dickenson EJ, Wall PDH, et al. Hip arthroscopy versus best conservative care for the treatment of femoroacetabular impingement (UK FASHION): a multicentre randomised controlled trial. Lancet. 2016;387(10034):1953-1960.
Wang D, Shen Q, Wang L, et al. Comparison of surgical and conservative treatment for femoroacetabular impingement: a meta-analysis of randomized controlled trials. Int Orthop. 2020;44(5):903-913.
Palmer AJR, Ayyar G, Bautista LC, et al. Arthroscopic surgery versus conservative therapy for femoroacetabular impingement: a randomized controlled trial (NCT01621590). Am J Sports Med. 2021;49(5):1174-1184.
International Society for Hip Arthroscopy. ISHA Position Statement on Hip Arthroscopy and Femoroacetabular Impingement. 2019.
Banerjee P, McLean CR, Kellett J, et al. Consensus meeting on the management of femoroacetabular impingement: proceedings of the 2018 International Hip Society Meeting. Hip Int. 2019;29(3):253-261.
Tannast M, Siebenrock KA, Anderson SE. Femoroacetabular impingement: radiographic diagnosis—what the radiologist should know. AJR Am J Roentgenol. 2007;188(6):1540-1552.
Stryker LS, Berry DJ. Hip deformities in adults. In: Azar FM, Beaty JH, Canale ST, eds. Campbell's Operative Orthopaedics. 14th ed. Elsevier; 2021:3079-3125.
Agricola R, Waarsing JH, Thomas GE, et al. The development of Cam-type deformity is related to femoral neck morphology: a cross-sectional study in young men. Osteoarthritis Cartilage. 2014;22(3):398-403.
Medication Comparisons
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View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy