Protrusio Acetabuli | ScienceGate

Background: Radiography is the initial imaging modality used to evaluate femoroacetabular impingement (FAI), and diagnostic radiographic findings are well-established. However, the prevalence of these radiographic findings in patients with hip pain is unknown. Purpose: The purpose was 3-fold: (1) to determine the overall prevalence of radiographic FAI deformities in young patients presenting with hip pain, (2) to identify the most common radiographic findings in patients with cam-type FAI, and (3) to identify the most common radiographic findings in patients with pincer-type FAI. Study Design: Cross-sectional study; Level of evidence, 3. Methods: A geographic database was used to identify patients aged 14 to 50 years with hip pain between the years 2000 to 2016. The following were evaluated on radiographs: cam type: typical pistol grip deformity, alpha angle >55°; pincer type: crossover sign (COS), coxa profunda or protrusio acetabuli, lateral center edge angle (LCEA) ≥40°, Tönnis angle <0°; and mixed type: both cam- and pincer-type features. Posterior wall sign (PWS) and ischial spine sign (ISS) were also evaluated. The prevalence of each was determined. Descriptive statistics were performed on all radiographic variables. Results: There were 1893 patients evaluated, and 1145 patients (60.5%; 1371 hips; 374 male and 771 female; mean age, 28.8 ± 8.4 years) had radiographic findings consistent with FAI. Of these hips, 139 (10.1%) had cam type, 245 (17.9%) had pincer type, and 987 (72.0%) had mixed type. The prevalence of a pistol grip deformity and an alpha angle >55° was 577 (42.1%) and 1069 (78.0%), respectively. The mean alpha angle was 66.9°± 10.5°. The prevalence of pincer-type radiographic findings was the following: COS, 1062 (77.5%); coxa profunda, 844 (61.6%); ISS, 765 (55.8%); PWS, 764 (55.7%); Tönnis angle <0°, 312 (22.8%); LCEA ≥40°, 170 (12.4%); and protrusio acetabuli, 7 (0.5%). Conclusion: The overall prevalence of radiographic findings consistent with FAI in young patients with hip pain was 60.5%. Radiographic findings for mixed-type FAI were the most prevalent. The most common radiographic finding for cam-type FAI was an alpha angle >55°. The most common radiographic finding for pincer-type FAI was the COS.

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Surgical management of traumatic protrusio acetabuli in the elderly

European Journal of Orthopaedic Surgery & Traumatology ◽

10.1007/s00590-006-0107-y ◽

2006 ◽

Vol 16 (4) ◽

pp. 369-371

Author(s):

M. J. Shelly ◽

M. Timlin ◽

J. M. O’Byrne

Keyword(s):

Surgical Management ◽

The Elderly ◽

Protrusio Acetabuli

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Protrusio Acetabuli: Contraindication or Indication for Hip Arthroscopy? And the Case for Arthroscopic Treatment of Global Pincer Impingement

Arthroscopy The Journal of Arthroscopic and Related Surgery ◽

10.1016/j.arthro.2012.02.028 ◽

2012 ◽

Vol 28 (6) ◽

pp. 882-888 ◽

Cited By ~ 36

Author(s):

Dean K. Matsuda

Keyword(s):

Hip Arthroscopy ◽

Arthroscopic Treatment ◽

Protrusio Acetabuli ◽

Pincer Impingement

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AUSTIN MOORE PROSTHESIS IN THE MANAGEMENT OF FRACTURE NECK OF FEMUR IN AN ELDERLY POPULATION.

10.36106/ijsr/3825631 ◽

2020 ◽

pp. 73-75

Author(s):

Ravi Kumar ◽

Chandan Kumar

Keyword(s):

Functional Outcome ◽

Treatment Option ◽

Elderly Population ◽

Tertiary Care ◽

Walking Distance ◽

Neck Of Femur ◽

Protrusio Acetabuli ◽

Fracture Neck Of Femur ◽

Austin Moore

Introduction: Intracapsular fractures of the proximal femur form a major share of fractures in the 77 elderly. Hip replacement arthroplasty (partial or total) is emerging as a most viable treatment option, and in that, hemiarthroplasty with the Austin Moore Prosthesis is among the most commonly employed. In our study, we have made an attempt to assess the functional status at long term follow up after hemiarthroplasty with the AMP, used in the treatment of fracture neck of femur in the elderly population, and to substantiate the use of the prosthesis in modern day orthopaedic practice. Materials and : A retrospective study was carried out in patients above the age of 60 years, who had been diagnosed with non-pathological fracture neck of femur, treated operatively with hemiarthroplasty using the Austin Moore prosthesis in a tertiary care centre. A minimum follow up period of two years was considered. All the patients were evaluated clinically, and wherever possible, radiologically. Functional outcome was assessed based on the Harris Hip scoring system, and the results were analysed. Radiologically, an attempt was made to assess, among others, the amount of protrusio acetabuli at follow up, and femoral offset changes following hemiarthroplasty with the AMP. Results: In our study, we observed a positive functional outcome (excellent or good) in 9(45%) patients, with fair result in 6(30%) and poor in 5(25%). However, when pain alone was taken as criteria for assessment, upto 14(75%) patients had none to slight pain at follow up, and only 1(5%) patient had marked pain. Walking distance was significantly reduced in 6(30%) patients, who were either confined indoors or bedridden, but in only 1(5%) of them, the cause for the decreased ambulatory status was implant or procedure related (pain). Among the complications, 1 patient had a post-operative periprosthetic fracture that healed subsequently, 2 patients had marked osteolysis around the stem of the prosthesis, and only 1 patient had a radiological evidence of protrusio acetabuli. Discussion: Hemiarthroplasty with Austin Moore Prosthesis for fracture neck of femur remains a fairly good treatment option in elderly patients.

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