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Table 4 Case Series Patient Details: is in Landscape page layout, and has been uploaded separately

From: Mid-term outcomes of arthroscopic-assisted Core decompression of Precollapse osteonecrosis of femoral head—minimum of 5 year follow-up

Patient

Hip

Age Range

(yr)

Gender

Laterality

Preop Ficat-Alret

Staging

Mechanical Symptoms

Kerboul Angle:

Arthroscopy Findings

Arthroscopy Procedure

Postop VAS Score

Complications

Major/Minor

Conversion to THA

Time from Arthroscopy to THA (mo)

1

1

40—45

M

R

IIb

Popping

80.2°

Cartilage Wear, Synovitis

Microfracture, Synovectomy

1

−−/−−

Yes

7

2 (BL)

2

30—35

M

R

IIa

101.7°

Chondral Defect, Labral Tear

Labral Debridement

1

−−/−−

 

3

30—35

M

L

I

154.6°

Cartilage Wear, Labral Tear

Labral Debridement

1

−−/−−

3

4

40—45

M

L

IIa

96.6°

Cam Lesion, Pincer Lesion, Labral Tear

Femoral and Acetabular Osteoplasty, Labral Repair

1

−−/−−

Yes

33

4

5

15—20

M

L

I

Popping

80.9°

Pincer Lesion, Labral Tear

Acetabular Osteoplasty, Labral Repair

0

−−/−−

 

5

6

40—45

F

L

IIa

107.5°

0

−−/−−

6 (BL)

7

46—50

M

R

IIb

108.0°

Cartilage Wear, Synovitis

Microfracture, Synovectomy

1

−−/−−

Yes

23

 

8

46—50

M

L

IIb

176.5°

1

−−/−−

Yes

25

7 (BL)

9

30—35

M

L

I

Clicking

104.2°

Cartilage Wear, Chondral Defect

Microfracture

1

−−/−−

 

10

30—35

M

R

IIa

Clicking

106.1°

Cartilage Wear

Microfracture

1

−−/−−

8

11

36—40

M

L

IIb

187.0°

Chondral defect

Microfracture

1

−−/−−

Yes

25

  1. Age Range, instead of specific age, is provided to help ensure patient confidentiality
  2. BL Bilateral
  3. Gender: M Male, F Female
  4. Laterality: L Left, R Right
  5. Kerboul Angle: combined necrotic angle or summation of angle of necrotic area seen on AP and lateral radiographs; small ≤160°, medium: 161–199°, large ≥200°
  6. Major complications: sub-trochanteric fracture, violation of articular cartilage, extra-articular fluid extravasation, hip dislocation, thromboembolism, and septic joint
  7. Minor complications: adhesions, neurapraxia, broken instrumentation, superficial wound infection, and heterotopic ossification