: Giles R. Scuderi, Alfred J. Tria, und Richard A. Berger
: Giles R. Scuderi, Alfred J. Tria, Richard A. Berger
: MIS Techniques in Orthopedics
: Springer-Verlag
: 9780387293004
: 1
: CHF 192,60
:
: Klinische Fächer
: English
: 433
: Wasserzeichen/DRM
: PC/MAC/eReader/Tablet
: PDF

Sole reference in the field of orthopedic surgery

"Section III The Knee: Unicondylar Knee Arthroplasty (p. 190-191)

12 Minimally Invasive Surgery for Unicondylar Knee Arthroplasty: The Bone-Sparing Technique

John A. Repicci and Jodi F. Hartman

When considering treatment options for osteoarthritis of the knee, the pathology and progression of the disease must be considered. Past studies examining osteoarthritis of the knee have demonstrated that the disease is slow, progressive, and typically limited to the medial tibiofemoral compartment.1–4 Moreover, the erosion of cartilage in the medial compartment is almost always limited to the anterior half of the medial tibial plateau and the corresponding contact area on the distal portion of the medial femoral condylar.4 Anteromedial osteoarthritis was coined by White et al. to describe this distinct clinicopathological condition.

The ensuing anatomic defect, namely, loss of articular cartilage in the extension gap with no corresponding loss of articular cartilage in the ?exion gap, results in a 6-mm to 8-mm disparity between the extension and ?exion gaps. For this reason, medial osteoarthritis also may be considered an extension gap disease (Figure 12.1). The joint surface asymmetry also accounts for the varus alignment and lateral tibial thrust commonly associated with medial unicompartmental osteoarthritis.

At this stage in the disease process, the medial meniscus is either partially torn or completely compromised and tension is compromised in the anterior cruciate (ACL) and medial collateral (MCL) ligaments.5 To compensate for the varus deformity, a sclerotic layer of bone, or medial tibial buttress is formed. As varus angulation increases, the medial tibial buttress hypertrophies to resist the increasing varus stresses. Although this may appear to be a rather inef?cient solution, this layer of sclerotic bone allows the medial compartment to withstand joint loading and to support weight, permitting continued ambulation for 10 to 19 years after initiation of the disease.

Eventually, however, patients experience weight-bearing pain as a result of the plastic deformation of bone at the articular surface, instability because of ligamentous laxity, and mechanical symptoms due to meniscal damage.5 The clinical presentation of this early, unicompartmental form of osteoarthritis must be differentiated from that of patients with more advanced forms of the disease. The pain associated with the tricompartmental form of the disease often is so debilitating that activities of daily living are severely restricted, independence is lost, and ambulatory aids, such as crutches, a walker, or wheelchair, are required. For these patients, total knee arthroplasty (TKA) is the most appropriate surgical option to relieve pain and to restore some degree of independence."
Preface6
Table of contents7
Contributors10
Section I The Shoulder and Elbow15
1 Mini-Incision Bankart Repair for Shoulder Instability16
Anatomy and Biomechanics16
Clinical Features17
Patient History17
Physical Examination18
Radiographic Features23
Treatment24
Nonoperative Treatment24
Operative Treatment24
References31
2 Mini-Open Rotator Cuff Repair34
Surgical Technique36
Postoperative Protocol/Rehabilitation41
Results42
Summary43
References43
3 Mini-Incision Fixation of Proximal Humeral Four-Part Fractures45
Historical Perspective46
Anatomic Considerations47
Indications for Percutaneous Pinning47
Patient Evaluation48
Surgical Procedure49
Patient Positioning49
Percutaneous Reduction50
Instrumentation52
Postoperative Management54
Results54
Complications55
Conclusion56
References56
4 Minimally Invasive Approach for Shoulder Arthroplasty58
Techniques58
Surgical Approaches59
Concealed Axillary Approach59
Mini-Incision Approach60
Four-Part Proximal Humerus Fractures:64
Avascular Necrosis70
Glenohumeral Arthritis72
Glenoid Exposure in Total Shoulder Arthroplasty76
Postoperative Care77
Conclusion82
References82
5 Mini-Incision Medial Collateral Ligament Reconstruction of the Elbow 84
Biomechanics and Anatomy84
History and Physical Examination86
Imaging89
Surgical Technique: The Docking Procedure91
Postoperative Mangement99
Results100
Summary100
References100
6 Mini-Incision Distal Biceps Tendon Repair103
Etiology103
History and Physical Examination104
Surgical Indication105
Technique106
Rehabilitation111
Complications111
Summary112
References112
Section II The Hip114
7 A Technique for the Anterolateral Approach to MIS Total Hip Replacement115
Surgical Technique115
Exposure116
Preparation of the Acetabulum123
Preparation of the Femur125
Conclusion132
8 The Anterior Approach for Total Hip Replacement: Background and Operative Technique133
Surgical Technique136
References152
9 Posterolateral Minimal Incision for Total Hip Replacement: Techniqueand Early Results153
Surgical Technique153
Patient Positioning and Landmarks154
Patient Exposure156
Postoperative Protocol169
Summary169
References170
10 Minimally Invasive Total Hip Arthroplasty Using the Two-Incision Approach171
Surgical Technique171
Summary190
References191
11 Minimally Invasive Metal-on-Metal Resurfacing Arthroplasty of the Hip192
Indications192
Surgical Technique: Anterolateral Approach193
Placement of Incision193
Deep Exposure194
Exposing the Acetabulum196
Femoral Resurfacing