Acute Trauma
Femur fracture
Proximal
Intracapsular
Femoral head fracture
Femoral neck fracture
Extracapsular
Intertrochanteric femur fracture
Trochanteric femur fracture
Shaft
Mid-shaft femur fracture (all subtrochanteric)
Hip dislocation
Pelvic fractures
Acetabular pelvic fractures
Open book pelvic fracture
Straddle pelvic fracture
Pelvic avulsion fracture
Proximal
Intracapsular
Femoral head fracture
Femoral neck fracture
Extracapsular
Intertrochanteric femur fracture
Trochanteric femur fracture
Shaft
Mid-shaft femur fracture (all subtrochanteric)
Intracapsular
Femoral head fracture
Femoral neck fracture
Extracapsular
Intertrochanteric femur fracture
Trochanteric femur fracture
Femoral head fracture
Femoral neck fracture
Intertrochanteric femur fracture
Trochanteric femur fracture
Mid-shaft femur fracture (all subtrochanteric)
Acetabular pelvic fractures
Open book pelvic fracture
Straddle pelvic fracture
Pelvic avulsion fracture
Chronic/Atraumatic
Hip bursitis<unk> 
Piriformis syndrome
Meralgia paresthetica
Septic arthritis
Septic arthritis of the hip (peds)
Obturator nerve entrapment
Avascular necrosis of hip
Septic arthritis of the hip (peds)
Appendicitis
Perforated appendicitis
Peritonitis
Abdominal aortic aneurysm
Crohn's disease (terminal ileitis)
Diverticulitis (cecal, Asian patients)
Ectopic
Endometriosis
Epiploic appendagitis
Herpes zoster
Inguinal hernia
Ischemic colitis
Kidney stone
Meckel's diverticulum
Mesenteric lymphadenitis
Mesenteric ischemia
Mittelschmerz
Neutropenic enterocolitis (typhlitis)
Ovarian cyst
Ovarian torsion
PID
Pyelonephritis<unk> 
Testicular torsion
Perforated appendicitis
Diverticulitis
Kidney stone
UTI
Pyelonephritis
Ectopic pregnancy
Infectious colitis
Inflammatory bowel disease (Crohn's Disease, Ulcerative Colitis)
Inguinal hernia
Mesenteric ischemia
Epiploic appendagitis
Mittelschmerz
Ovarian cyst
Ovarian torsion
PID<unk> 
Testicular torsion
Appendicitis
Abdominal aortic aneurysm
Herpes zoster
Endometriosis
Colon cancer
Irritable bowel syndrome
Small bowel obstruction
Psoas abscess
Acute Trauma
Renal abscess
Femur fracture
Pyelonephritis
Proximal
Traumatic epididymitis
Intracapsular