Mike Millis, M.D., Boston Children's Hospital
Mike Millis, M.D., Boston Children's Hospital Mike Millis, M.D., Boston Children's Hospital
The Normal Hip: Mechanical Characteristics • Free mobility: ROM>needed for ADL • Stability • Narrow physiologic range of loading
• Anatomy: “Normal” Hip • Spherical head congruous with spherical acetabulum in all positions • “Sufficient” head-neck offset; “normal” version • “Sufficient” coverage without overcoverage • Mechanics : Motion should be MORE than needed for ADL * Motion smooth/gliding/non-jamming throughout ROM * Stability; tolerable contact conditions throughout ROM
- Page 1 and 2: Hipology 2010 COA Meeting April 17,
- Page 3 and 4: Disclosures • None relevant to th
- Page 5 and 6: Major Points * In North America, mo
- Page 7 and 8: “It seems clear that either osteo
- Page 9: Joint Function Activity level Insta
- Page 12 and 13: “We see what we know.” Frank Ph
- Page 14 and 15: The Contemporary Mechanical Theory
- Page 16 and 17: Etiology of OA of the Hip-1986 •
- Page 18 and 19: MAJOR POINTS * A labral tear is usu
- Page 20 and 21: Acetabular Rim Syndrome(s) • Groi
- Page 22 and 23: Step-Wise Analysis of the Symptomat
- Page 24 and 25: Good News About OA in the Hip • R
- Page 26 and 27: The Normal Hip: Anatomic Characteri
- Page 30 and 31: Important Definitions • Instabili
- Page 32 and 33: Hip Mechanics (INSTABILITY) (IMPIN
- Page 34 and 35: How can joints go wrong mechanicall
- Page 36 and 37: Hip Mechanics • IMPINGEMENTINSTAB
- Page 38 and 39: Femoro-Acetabular Impingement as a
- Page 40 and 41: Femoro-Acetabular Impingement • F
- Page 42 and 43: Femoro-Acetabular Impingement as a
- Page 44 and 45: Herniation pit; usually means cam-
- Page 46 and 47: Femur-based FAI: Cam Impingement
- Page 48: CAM Impingement-Mechanism CAM Type
- Page 61 and 62: Delamination of Cartilage
- Page 63 and 64: Ortho Uni Berne
- Page 65 and 66: Ortho Uni Berne
- Page 67 and 68: (pincer) M:F = 4:12 pistol grip/ ca
- Page 69 and 70: Etiologies of Hip OA in North Ameri
- Page 71 and 72: Acetabulum-Based Femoro- Acetabular
- Page 73 and 74: “We see what we know.” Frank Ph
- Page 75: Pincer Impingement-Mechanism PINCER
The Normal Hip:<br />
Mechanical Characteristics<br />
• Free mobility: ROM>needed for ADL<br />
• Stability<br />
• Narrow physiologic range of loading
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