II. Causes: Critical Causes of Hip Pain (not to miss)
- Septic Arthritis of the Hip
- Hip Fracture
- Hip Avascular Necrosis
- Peripheral Arterial Disease (Aortoilliac Occlusive Disease, Abdominal Aortic Aneurysm)
- Peritonitis (or other surgical Abdomen)
- Slipped Capital Femoral Epiphysis (SCFE)
- Malignancy involving hip or Pelvis
III. Causes: Timing in the Elderly (acute versus insidious)
- Spontaneous onset without Trauma in elderly
- Ask about systemic symptoms
- Obtain Hip XRay
- Obtain infectious and Arthritis labs (CBC, CRP, ESR, RF)
- Consider serious causes
- Inflammatory Arthritis (acute synovitis)
- Septic Arthritis of the hip (especially if fever, toxic appearance or severe Hip Pain on ambulation or range of motion)
- Hip Fracture
- Hip Avascular Necrosis
- Insidious onset in elderly
- See Red Flags above
- Osteoarthritis
- Hip Avascular Necrosis
- Malignancy
- Hip Fracture
IV. Causes: Anterior or Anterolateral Hip Pain or Groin Pain
- Precautions
- Anterolateral Hip Pain is most associated with intrinsic hip pathology
- May present with patient cupping the anterolateral hip between their thumb and index finger (C Sign)
- Also consider referred pain
- Inguinal Hernia
- Lumbar Radiculopathy
- Pelvic pathology
- Especially if no pain on Hip Range of Motion or on direct pressure
- Anterolateral Hip Pain is most associated with intrinsic hip pathology
-
Hip Pain on weight bearing and mechanical symptoms (painful hip locking, catching, clicking)
- See Snapping Hip
- Hip Labral Tear
- Iliopsoas Bursitis (Internal Snapping Hip)
- Hip loose body or chondral lesions
-
Hip Pain on weight bearing without mechanical symptoms
- Femoral Neck Fracture or Femoral Stress Fracture
- Obtain Hip MRI and Non-weight bearing if suspected despite negative Hip XRay
- Hip Impingement or Femoroacetabular Impingement
- Pain especially on standing after prolonged sitting (e.g. arising from Car Seat)
- Hip Osteoarthritis
- Hip Avascular Necrosis (Hip Osteonecrosis)
- Septic Arthritis
- Femoral Neck Fracture or Femoral Stress Fracture
- Anterior or Anterolateral thigh neuropathic pain
- Meralgia Paresthetica (typically anterior thigh pain)
- Lumbar Radiculopathy
- Children with deep referred Hip Pain (especially with weight bearing)
- Legg-Calve-Perthes
- Children 2 to 12 years old (especially males)
- Slipped Capital Femoral Epiphysis
- Overweight Children 11 to 14 years old
- Transient Synovitis
- Children ages 3 to 8 years old who refuse to bear weight
- Must distinguish from Septic Arthritis
- Legg-Calve-Perthes
- Overuse or sports related Anterior Hip Pain
- See Groin Pain or Hip Pain in Athletes
- Sports Hernia or Athletica pubalgia (anterior Groin Pain)
- Clicking or Snapping Hip (Thomas Test or Snapping Hip maneuver)
- See Hip Pain with mechanical symptoms listed above
- Hip Stress Fracture
- See above
- Resisted Muscle testing and local tenderness
- Hip flexor Muscle Strain
- Adductor Strain (Groin Pull)
V. Causes: Lateral Hip Pain
- Background
- Pure Lateral Hip Pain is unlikely to be associated with intrinsic hip pathology
- Most intrinsic Hip Pain will be anterolateral (see above)
- Overuse or sports related
- Consider Iliotibial Band Syndrome
- External Snapping Hip
- Tender over lateral thigh with pain on weight bearing
- Femoral Lesion (metastases, Multiple Myeloma, Chondrosarcoma)
- Tender over greater trochanter
- Tender at gluteus medius, hip abductor weakness/pain
- Gluteus medius Muscle dysfunction
VI. Causes: Posterolateral or Posterior Hip Pain
- Approach
- Posterior Hip Pain is rarely due to intra-articular cause
- Most commonly due to SI Joint Dysfunction, Piriformis Syndrome or Lumbar Radiculopathy
- Consider referred pain from Pelvis or Abdomen
- Pain reproduced with direct pressure
- Deep Gluteal Syndrome
- Gluteal Muscle tear
- Pain radiates down lateral thigh and buttock
- Gluteus medius Tendinopathy
- Gluteus medius is hip abductor, weaker than quadriceps, predisposing it to Tendinopathy
- Iliac Crest apophysis avulsion
- History of direct Trauma in age under 25 years
- Hamstring Muscle Strain or avulsion
- Ischial apophysis avulsion
- History or cutting, kicking or jumping in age under 25 years
-
Thigh or buttock neuropathic pain (especially Paresthesias and hypoesthesia)
- Ischiofemoral Impingement
- Impingement of quadratus femoris Muscle between the femoral lesser trochanter and the ischium
- Sacroiliac Joint Dysfunction
- Sacroilitis
- Piriformis Syndrome (deep pain worse with sitting)
- Lumbosacral Radiculopathy (L1-L2 or S2-S3)
- Discitis
- Ischiofemoral Impingement
VII. Causes: Groin Pain or Hip Pain in Athletes
- Idiopathic in 30% of cases
- Adductor Strain or Adductor Tendinitis (Groin Pull)
- Pubic Instability
- Osteitis Pubis
- Myositis Ossificans
- Sports Hernia (Athletic Pubalgia)
- Direct Inguinal Hernia (power lifters, middle aged patients)
- Femoral Hernia (women)
- Groin Disruption
- Iliopsoas Strain or Iliopsoas Bursitis
- Snapping Hip syndrome
- Femoral Neck Stress Fracture
- Pubic Ramus Stress Fracture
- Pubic Apophysitis (children and young adult athletes)
- Avulsion Fracture (Adolescent Athletes)
- Anterior Superior Iliac Spine Avulsion Fracture
- Rapid sartorius contraction in jumping sport
- Responds to non-operative conservative therapy
- Anterior Inferior Iliac Spine Avulsion Fracture
- Strong rectus femoris contraction in kicking sport
- Responds to non-operative conservative therapy
- Ischial Tuberosity Avulsion Fracture
- Rapid hamstring contraction in sprinting, hurdling
- Fragments >1-2 cm may require ORIF
- Anterior Superior Iliac Spine Avulsion Fracture
- Nerve entrapment
- Genitofemoral nerve entrapment
- Upper anterior thigh and Groin Pain
- Follows abdominal surgery (also seen in cyclists)
- Lateral Femoral Cutaneous Nerve Entrapment (Meralgia Paresthetica)
- Lateral thigh pain
- Ilioinguinal Nerve Entrapment
- Upper medial thigh or genital pain
- Iliohypogastric nerve entrapment
- Lateral gluteal region and abdominal Muscle region pain
- Obturator Nerve Entrapment
- Medial thigh and adductor region pain
- Genitofemoral nerve entrapment
VIII. Causes: Hip Pain in Pregnancy
- Common, benign causes
- Lumbosacral strain
- Sciatica
- Pelvic structure compression
- Specific to pregnancy
- Femoral head Osteoporosis
- Femoral head Fracture
- Transient Osteoporosis of the hip
- Common in second and third trimester as well as early postpartum
- Disability out of proportion to physical findings
- Osteopenia on XRay
- Exclude Hip Avascular Necrosis and Femoral Neck Fracture
- Other causes not to miss
IX. Causes: Hip Joint disorders with groin or Hip Pain by age
- Pediatric Causes (under age 8-12 years)
- See Pediatric Limp
- Legg-Calve-Perthes Disease
- Septic Joint
- Toxic Synovitis
- Monarticular Arthritis (e.g. Lyme Disease)
- Malignancy (Osteosarcoma, Ewing Sarcoma, Leukemia)
- Adolescent causes
- Adult causes (See causes below)
- Osteoarthritis of femoral head (especially over age 50 years)
- Avascular Necrosis of the Femoral Head
- Acetabular labral tear
X. Causes: Musculoskeletal causes of groin or Hip Pain
- See Groin Pain in Athletes as above
- Bone Causes
- Hip Fracture
- Femoral head avascular necrosis
- Cancer (primary site or metastases)
- Joint Causes
- Muscle or tendon Causes
- Neurologic Causes
- Lumbar Disc Disease
- Lumbar Spinal Stenosis
- Coccygodynia
- Meralgia Paresthetica (see nerve entrapment above)
XI. Causes: Non-musculoskeletal causes of groin or Hip Pain
-
General
- Inguinal Hernia
- Inguinal Lymphadenopathy or Lymphadenitis
- Lumbar Disc Disease with L1-2 or S2-3 radiculopathy
- Nephrolithiasis
- Abdominal Aortic Aneurysm
- Appendicitis
- Diverticulitis
- Inflammatory Bowel Disease
- Malignancy
- Herpes Zoster
- Women
- Men
XII. References
- Fields (1997) Lecture: AAFP Sports Medicine, Dallas
- Ruane (1998) Physician SportsMed 26(4):78-103
- Shahideh (2013) Crit Dec Emerg Med 27(9):10-18
- Braly (2006) Clin Sports Med 199-210 [PubMed]
- Brunner (2003) Am Fam Physician 67(3):537-42 [PubMed]
- Chamberlain (2021) Am Fam Physician 103(2): 81-9 [PubMed]
- Fricker (1997) Br J Sports Med 31:97-101 [PubMed]
- Lynch (1999) Sports Med 28:137-44 [PubMed]
- Morelli (2001) Am Fam Physician 64(8):1405-14 [PubMed]
- Wilson (2014) Am Fam Physician 90(1): 27-34 [PubMed]