Osteonecrosis of the Hip and Bisphosphonate Treatment (BONES)

A Randomised Controlled Trial of Bisphosphonate Therapy in Osteonecrosis of the Hip

Osteonecrosis of the hip is an important cause of musculoskeletal disability and finding therapeutic solutions has proven to be challenging. Osteonecrosis means death of bone which can occur from the loss of the blood supply or some other means. Although any age group may develop osteonecrosis, most patients are between 20 and 50 years old. The most common risk factor is a history of high steroid treatment for some medical condition. The next most common associated condition is a history of high alcohol use. There are some cases of osteonecrosis that occur in patients that are otherwise completely healthy with no detectable risk factors.

In the earliest stage of the disease, x-rays appear normal and the diagnosis is made using MRI. The advanced stages of osteonecrosis begin when the dead bone starts to fail mechanically through a process of microfractures of the bone. As the disease progresses, the surface begins to collapse until, finally the integrity of the joint is destroyed. A wide range of surgical treatments with variable success rates have been proposed for the treatment of the osteonecrosis to preserve joint integrity, including core decompression, whereby the venous hypertension that ensues is lessened and revascularisation may be induced leading to bone repair. Nonsurgical treatment options are limited and usually result in a poor prognosis. Early stage disease can be treated with protected weight bearing and physiotherapy, however some studies have shown protected weight bearing to be associated with a greater than 85% rate of femoral head collapse. Unfortunately most studies indicate that the risk for disease progression is greater with nonsurgical treatment than with surgical intervention. There are no established pharmaceuticals for the prevention of treatment of osteonecrosis. Evidence is increasing that the nitrogen containing bisphosphonates may be beneficial in the treatment of osteonecrosis. One bisphosphonates (alendronate) has been evaluated in 60 patients diagnosed with osteonecrosis of the hip. Recent clinical studies have shown very promising results. All patients had symptomatic improvement after one year. Although the follow up time ranged from 3 months to 5 years, only 6 patients progressed to the point of needing surgery.

Study Overview

• Status: Unknown
• Conditions: Osteonecrosis
• Intervention / Treatment: Drug: Placebo; Drug: Zoledronic Acid

Detailed Description

Osteonecrosis (ON) of the hip is an important cause of musculoskeletal disability and finding therapeutic solutions has proven challenging. Patients who are affected with ON are often relatively young, usually in the third to sixth decade of life. ON of the hip is an increasingly common cause of musculoskeletal disability. It can cause pain with or without loss of function of the joint and often ends in substantial use of health care resources and disability. ON of the hip usually progresses to severe destruction of the femoral head with resultant degeneration of the hip joint, in most cases requiring joint replacement.

Early diagnosis has been made easier using magnetic resonance imaging (MRI), however no common satisfactory therapy has been developed for the early stage of the disease. Early surgery aimed at preserving the femoral head has been proposed, such as vascularised fibula grafting. However, the results of this invasive technique do not seem to be widely reproducible, and more minor interventions such as core drilling have high failure rates. Evidence is increasing that the nitrogen containing bisphosphonates may be beneficial in the treatment of ON. Data from clinical trials with patients with ON of the hip suggested that the bisphosphonate alendronate would reduce pain and disability and may reduce progression to femoral head collapse that usually would require surgical intervention.

With this study we aim to determine the efficacy of bisphosphonate therapy (zoledronic acid) versus placebo for reducing pain and disability in ON of the femoral head necrosis (palliative endpoint) and to investigate the effect of bisphosphonate therapy versus placebo in reducing progression to femoral head collapse and the need for surgical intervention (therapeutic endpoint).

Methods This will be a 2-armed double-blind randomised trial of a) zoledronic acid 5mg annually for 3 doses b) placebo drug infusions. Participants will be recruited primarily from rheumatologists and orthopaedic surgeons from multiple centres in Australia. We plan to include 4 major centres in capital cities in Australia and each centre would recruit approximately 30 participants. Potential participants who meet the eligibility criteria will be identified by their treating Rheumatologists or Orthopaedic surgeons, followed by a screening assessment conducted by the study research staff. Eligible participants will be randomised prior to the start of treatment. Prior to treatment, the study research staff will perform a baseline assessment over the phone, including demographic details, age, sex, duration of symptoms, medical history including prior surgery, trauma and medication use and known risk factors for ON. Furthermore at baseline, the Rheumatologists or Orthopaedic surgeon will perform a clinical evaluation using a slightly modified Harris Hip Score (HHS). The study research staff will contact the participants every 6 months to monitor the participant's condition and evaluate pain and disability. Additionally the participants will have a clinical evaluation and MRI scan at 12 months.

This novel clinical research protocol will aim to provide further evidence of the protective value of alendronate or zoledronic acid in patients with ON of the hip. It will determine whether bisphosphonates slow the progression of symptoms as well as the progression to total collapse of the hip. Additionally it will seek to answer questions regarding the comparative effectiveness and also cost-effectiveness of the use of bisphosphonates in early disease. The results of this study can lead to change in treatment of early disease ON and delay and possibly prevent surgical intervention.

• Study Type: Interventional
• Enrollment (Anticipated): 120
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Monique Macara; Phone Number: +61294631888; Email: monique.macara@sydney.edu.au
• Study Contact Backup: Name: Lyn March; Email: lyn.march@sydney.edu.au

Study Locations

• Australia
  • New South Wales
    • Sydney, New South Wales, Australia, 2065
      • Recruiting
      • Royal North Shore Hospital, Department of Rheumatology
      • Contact: Monique Macara; Phone Number: +61294631888; Email: monique.macara@sydney.edu.au
      • Contact: Professor Lyn March; Email: lyn.march@sydney.edu.au
      • Sub-Investigator: David Little, Prof
      • Principal Investigator: Lyn M March, Prof
  • Queensland
    • Brisbane, Queensland, Australia, 4102
      • Recruiting
      • Princess Alexandra Hospital
      • Contact: Genni Lynch; Phone Number: (07) 3176 6640; Email: Genni_Lynch@health.qld.gov.au
      • Principal Investigator: Cameron Cooke, Dr
    • Herston, Queensland, Australia, 4029
      • Recruiting
      • Royal Brisbane and Womens Hospital
      • Contact: A/Prof Emma Duncan; Email: e.duncan@uq.edu.au
      • Contact: Janelle McFarlane; Email: j.mcfarlane@uq.edu.au
      • Principal Investigator: A/Prof Emma Duncan
  • South Australia
    • Adelaide, South Australia, Australia, 5011
      • Recruiting
      • The Queen Elizabeth Hospital
      • Contact: Catherine Hill, A/Prof; Phone Number: +618 82226688; Email: Catherine.Hill@health.sa.gov.au
      • Contact: Sarah Downie-Doyle; Phone Number: +618 8133 4029; Email: Sarah.Downie-Doyle2@health.sa.gov.au
      • Principal Investigator: Catherine Hill, A/Prof
  • Victoria
    • Melbourne, Victoria, Australia, 3144
      • Recruiting
      • Cabrini Hospital
      • Contact: Rachelle Buchbinder; Phone Number: +613 95081652; Email: rachelle.buchbinder@med.monash.edu.au
      • Principal Investigator: Rachelle Buchbinder, Prof

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 16 years to 88 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. aged between 18-90 years,
2. symptoms of pain and disability in at least one hip joint, or
3. positive MRI findings stage I or II on the ARCO classification

Exclusion Criteria:

1. previous hip joint surgery on the affected hip
2. severe pain and disability at rest if treating clinician has recommended surgery
3. radiographic or MRI findings suggestive for stage III and IV on the ARCO classification

4. any iv bisphosphonate within the prior 2 years or any prior use of bisphosphonate preparations, except according to the washout schedule:

   • 2 years (if use > 48 weeks),
   • 1 year (if used > 8 weeks but < 48 weeks)
   • 6 months (if used > 2 weeks but < 8 weeks)
   • 2 months (if used < 2 weeks)
5. active primary hyperparathyroidism
6. hypothyroidism, not appropriately controlled with long-term thyroxine therapy
7. history of iritis or uveitis, except due to trauma, and resolved for > 2 years prior to study
8. self-reported history of diabetic nephropathy or retinopathy (if diabetic, Hb A1c > 10%)
9. urine dipstick greater than or equal to 2+ protein at screening
10. AST or ALT greater than twice the upper limit of normal and/or alkaline phosphatase greater than twice the upper limit of normal
11. serum calcium > 2.75 mmol/L (11.0 mg/dL) or < 2.00 mmol/L (8.0 mg/dL)
12. serum 25-hydroxyvitamin D concentrations < 15 ng/L m) baseline renal insufficiency (calculated creatinine clearance less than 40 mL/min and serum creatinine greater than 175 mol/L) at V1
13. a history of invasive malignancy of any organ system, treated or untreated, in the past five years; excluding, basal cell or squamous cell carcinoma of the skin, colonic polyps with non-invasive malignancy which have been removed, ductal carcinoma in-situ (DCIS), and carcinoma in-situ (CIS) of the uterine cervix
14. any candidate patient with severe dental problems or current dental infections and/or any candidate patient with recent or impending dental surgery within three months of dosing
15. women of childbearing potential not using the contraception method(s) specified in this study (specify), as well as women who are breastfeeding

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Placebo Comparator: Control; Subjects in the control group will receive a placebo drug for a 1 year period	Drug: Placebo; Subjects in the control group will receive a placebo drug for a similar period
Active Comparator: Zoledronic Acid; Subjects in this intervention group will be given 5mg Zoledronic acid as a single injection	Drug: Zoledronic Acid; Subjects in the intervention group B will be given 5mg Zoledronic acid as a single injection.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
reducing pain and disability in the hip	1 years

Secondary Outcome Measures

Outcome Measure	Time Frame
reducing progression to femoral head collapse and the need for surgical intervention	3 years

Collaborators and Investigators

• Sponsor: University of Sydney
• Collaborators: Novartis
• Investigators: Principal Investigator: Philip Sambrook, Prof, University of Sydney

Study record dates

Study Major Dates

• Study Start: August 1, 2009
• Primary Completion (Anticipated): December 1, 2013
• Study Completion (Anticipated): December 1, 2013

Study Registration Dates

• First Submitted: October 27, 2008
• First Submitted That Met QC Criteria: October 27, 2008
• First Posted (Estimate): October 28, 2008

Study Record Updates

• Last Update Posted (Estimate): January 14, 2013
• Last Update Submitted That Met QC Criteria: January 11, 2013
• Last Verified: January 1, 2013

More Information

Terms related to this study

• Keywords: bisphosphonates; hip; osteonecrosis; collapse femoral head
• Additional Relevant MeSH Terms: Pathologic Processes; Necrosis; Musculoskeletal Diseases; Bone Diseases; Osteonecrosis; Physiological Effects of Drugs; Bone Density Conservation Agents; Zoledronic Acid
• Other Study ID Numbers: 570989