What to Learn from this Article?
What to Learn from this Article?
Excellent implant survivorship figures do not necessarily mean that an implant is excellent.
Case Report | Volume 7 | Issue 3 | JOCR May – June 2017 | Page 76-79| Tamas Halasi, Declan Reidy, Shane Guerin. DOI: 10.13107/jocr.2250-0685.814
Tamas Halasi, Declan Reidy, Shane Guerin
 Department of Orthopaedic Surgery, Cork University Hospital, Wilton, Cork, Ireland.
Address of Correspondence
Dr. Tamas Halasi,
Department of Orthopaedic Surgery, Cork University Hospital, Wilton, Cork, Ireland.
Introduction: The Smith-Petersen vitallium mold arthroplasty was a real landmark in arthroplasty surgery as this was the first technique which produced predictable and satisfactory results.
Case Report: We present the longest known follow-up of any hip arthroplasty in literature. The arthroplasty was performed in 1949 in London on a 30-years-old female patient with congenital hip dysplasia, and it was revised in 2014 after 65 years.
Conclusion: Total hip arthroplasties nowadays give better functional results, but the fact that the patient got 65 years of the relatively good function is noteworthy and is a tribute to Dr. Marius Nygaard Smith-Petersen.
Keywords: Smith-Petersen, vitallium, arthroplasty, follow-up, orthopedic.
The first arthroplasty surgeons tested various materials and techniques before the nowadays used design was developed. Smith-Petersen introduced his vitallium mold arthroplasty in 1938 , and follow-up studies have shown high levels of patient satisfaction . We now report the longest known follow-up of any hip arthroplasty in literature. We feel that this 65-year long story of one of the pioneers of arthroplasty deserves appreciation and closure.
E. H. was born in 1919 with congenital dysplasia of her left hip. She had had multiple operations on it, but she still developed gross degenerative changes by the age of 30 (Fig. 1). Mr. W. Alexander Law, an orthopedic surgeon, performed a Smith-Petersen vitallium mold hip arthroplasty in October 1949 in London Hospital (Fig. 2).
After the surgery, she spent 2 weeks in traction and a further 2 months in the hospital for rehabilitation. She was discharged home mobilizi ng with one crutch, and she returned to work after 8 months. She enjoyed an active lifestyle until her retirement in 1984. In the first 35 years, the arthroplasty remained entirely pain free. She gradually developed a leg length discrepancy, so she had to use a heel raise insole, but she did not have any further complaints until more recently. She attended the Emergency Department in Cork University Hospital in 1994 complaining of the left knee pain after a fall. The X-ray showed an undisplaced lateral condyle fracture of her left femur which was treated conservatively. Further questioning revealed that she underwent hip surgery and her pelvis X-ray showed the mold arthroplasty in situ (Fig. 3). She was discharged from the fracture clinic in January 1995. At that time she walked with a limp, but she still did not require a walking aid. The left lower limb was 6 cm shorter than the right, and she had a positive Trendelenburg sign. She did not have a fixed flexion deformity, and she had a satisfactory range of motion. The case report was published at the time by Mahalingam and Reidy . She attended the Emergency Department again in April 2011 complaining of the right groin pain, following a fall 1 week earlier while getting out of her own car. At that time she was still active, and the only indication of functional decline was that she used a walking stick outdoors. Her radiographs showed an intracapsular fracture of her right hip and the arthroplasty on the left side in situ (Fig. 4). She subsequently underwent right-sided bipolar hemiarthroplasty. After 6 weeks, she returned to her own home mobilizing with a walking stick. The case report was published at that time by Baker et al. . She was referred to the Orthopaedic Outpatient Clinic in Cork University Hospital in September 2012 by her GP due to the left knee pain. Her X-ray showed degenerative changes of her knee, and her symptoms were considered to be a sequel to her previous lateral condyle fracture (Fig. 5).
She has not developed any significant spinal problems through all these years, and she has not had any other orthopedic issues besides the aforementioned average level of osteoarthritis. She was treated conservatively with intra-articular steroid injections which gave her minimal relief. Her pelvic X-ray showed some acetabular erosion on the left side. Later she had a magnetic resonance imaging and a bone scan which confirmed that the mold arthroplasty is loose (Fig. 6). Considering these results the 63-year-old arthroplasty was believed to be the source of her knee pain. Initially, the patient refused any kind of surgical intervention. She was happy with her hip function, and she was able to mobilize with her walking stick. Her main complaint remained the knee pain, so she had intra-articular injections in the next months, to no avail. Victoria University Hospital in Cork, Ireland. After 65 years, the Smith-Petersen vitallium mold arthroplasty was replaced with a cemented Exeter total hip arthroplasty. After 2 weeks, the patient was discharged from the hospital to 6 weeks of rehabilitation, and she had a regular follow-up for up to 6 months (Fig. 7). At the time of her discharge from our clinic, both hip prostheses were stable with a satisfactory range of motion. She had a significant improvement in her knee pain as well, she was able to mobilize with a rollator frame, and she was still living independently in her own home. We contacted her via telephone on her 97th birthday in November 2016. She is now resident in a nursing home; unfortunately, she had to give up her independent lifestyle a year ago having suffered a hemorrhagic stroke in November 2015. She is now mobilizing with a walking frame with the help of one, but she does not have significant pain in her revised left hip, and she is happy with the functional result.
The first arthroplasty surgeons around the turn of the 19th century experimented with various materials. Initially, ivory was used to replace the damaged femoral head; later interpositional arthroplasty became more popular placing various tissues (pig bladder, fascia lata, and skin) between articulating surfaces. Unfortunately, these techniques produced poor prosthesis survival rates and unsatisfactory functional results . Dr. Marius Nygaard Smith-Petersen was born in 1886 in Norway, he graduated from Harvard Medical School, and after that, he lived and worked in Boston until his death in 1953. He introduced the mold arthroplasty in 1923 . The idea came from a case where he removed an embedded piece of glass from a man’s back, and he observed that a reactive synovial-like membrane had developed around it. His original design was a hollow glass hemisphere which was placed over the femoral head to stimulate cartilage regeneration of the hip joint on both sides of the glass. His intention was to remove the glass after the cartilage was restored, but unfortunately, glass was not durable enough, and it quickly failed for almost every patient. He started to experiment with different materials, and finally, his dentist suggested vitallium, a new cobalt-chrome alloy which had just been introduced in dentistry at the time . The first vitallium mold arthroplasty was performed in 1938. In the following decades, his team performed more than 500 procedures , and it quickly became a popular operation worldwide. The results were promising , and the indications were broad including intracapsular hip fractures, osteoarthritis, rheumatoid arthritis, Perthes disease, congenital hip dislocations, and even septic arthritis. This was a real landmark in arthroplasty surgery as this was the first technique and material which produced predictable and satisfactory results. There were various attempts through the years to modify the Smith-Petersen vitallium mold arthroplasty. The Judet brothers developed their similar prosthesis in 1948. They used acrylic instead of vitallium and they also introduced the intramedullary stem component. Their initial results were promising; the longest known follow-up of Judet prosthesis is 47 years . The femoral stem gave the arthroplasty additional stability, but it was also sensitive to wear and loosening . The Smith-Petersen arthroplasty was still superior to the new acrylic based prosthesis in hip pain relief and patient satisfaction rate . Vitallium has been proven to be an excellent choice of material, and similar cobalt-chrome alloys are still in use in orthopedic implants. These two prostheses were the most popular and most durable designs until the introduction of the modern low-friction hip replacement techniques by Sir John Charnley in the 1960s. His design – metal femoral stem, polyethylene acetabular component and acrylic bone cement – is considered to be the first real total hip arthroplasty and it is identical, in principle, to the prostheses used nowadays . There are only a few case reports describing comparably long follow-ups of hip arthroplasties. Radcliffe and Geary in 1997 reported a patient with 46-year survival of a Smith-Petersen mold arthroplasty . In 2006 Wright et al. reported a case with 56-year follow-up , in the same year Landham et al. presented a case with 48-year follow-up [12.] In 2008 Northover and Maqsood reported a patient with 58-year follow-up . At 65 years our case is the longest survival recorded. What these case reports had in common is that all these patients lived a long and fairly active life and they were very happy with their functional results for a surprisingly long time despite their significant leg length discrepancies..
We can assume that total hip arthroplasties nowadays give better functional results, but there were no formal scoring systems 50-60 years ago to provide objective and comparable data with the modern techniques. Revision rates were also lower, but it does not only reflect the great results of these early mold arthroplasties. A half century ago arthroplasty revision surgery results were not as good as nowadays, so surgeons had a higher threshold for performing it. Furthermore, patient expectations and needs were lower so they could settle with less than perfect results. This amount of limb shortening would make the outcome unacceptable to modern surgeons and patients. It is hard to explain why the above-mentioned prostheses stood the test of time. The Smith-Petersen mold arthroplasty does not seem to align with the current principles of hip replacement surgery, however, these cases demonstrated remarkable long-term results. We might never find an exact answer to this contradiction; nonetheless, we believe that the careful work of these pioneers of hip arthroplasty surgery contributed not only to the excellent results of these particular patients but also to the outstanding results of all current hip arthroplasty techniques. In our case, the acetabular erosion and the consequent limb shortening yielded a suboptimal clinical result, but the fact that the patient got 65 years of the relatively good function is noteworthy and is a tribute to Dr. Marius Nygaard Smith-Petersen.
Excellent implant survivorship figures do not necessarily mean that an implant is excellent!
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7. Tennent TD, Eastwood DM. Survival of the Judet hip prosthesis. J R Soc Med 1998;91(7):385-386.
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10. Radcliffe SN, Geary NP 46-year survival of a Smith-Petersen mold arthroplasty. J Arthroplasty 1997;12(5):584-585.
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12. Landham PR, Abbas N, Jähnich H. The oldest surviving arthroplasty? J R Soc Med 2006;99(12):640.
13. Northover JR, Maqsood M. 58-year follow-up of a vitallium mold hip arthroplasty: A case report and lit rev. Acta Orthop 2008;79(6):731-733.
|Dr. Tamás Halasi|
|How to Cite This Article: Halasi T, Reidy D, Guerin S. Longest Known Follow-up of a Hip Arthroplasty: The Last Chapter of a 65-Year Long Story. Journal of Orthopaedic Case Reports 2017 May-June;7(3):76-79.|
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