The Journal of Bone and Joint Surgery (American) 84:1205-1209 (2002)
© 2002 The Journal of Bone and Joint Surgery, Inc.
Subchondral Insufficiency Fracture of the Femoral Head and Acetabulum
A Case Report
Goro Motomura, MD,
Takuaki Yamamoto, MD, PhD,
Keita Miyanishi, MD, PhD,
Kenzo Shirasawa, MD,
Yasuo Noguchi, MD, PhD and
Yukihide Iwamoto, MD, PhD
Investigation performed at the Department of Orthopaedic Surgery,
Graduate School of Medical Sciences, Kyushu University, Fukuoka,
Japan
Goro Motomura, MD
Takuaki Yamamoto, MD, PhD
Keita Miyanishi, MD, PhD
Yasuo Noguchi, MD, PhD
Yukihide Iwamoto, MD, PhD
Department of Orthopaedic Surgery, Graduate School of Medical
Sciences, Kyushu University 3-1-1 Maidashi, Higashi-ku, Fukuoka
812-8582, Japan. E-mail address for T. Yamamoto: yamataku@ortho.med.kyushu-u.ac.jp
Kenzo Shirasawa, MD
Department of Orthopaedic Surgery, Shimonoseki City Hospital,
1-13-1 Koyo-cho, Shimonoseki 750-8520, Japan
The authors did not receive grants or outside funding in support
of their research or preparation of this manuscript. They did not
receive payments or other benefits or a commitment or agreement
to provide such benefits from a commercial entity. No commercial
entity paid or directed, or agreed to pay or direct, any benefits
to any research fund, foundation, educational institution, or other
charitable or nonprofit organization with which the authors are
affiliated or associated.
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Introduction
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Subchondral insufficiency fracture of the femoral head generally
occurs in elderly patients, who tend to have osteopenic bone and/or
to be overweight. It characteristically presents as acute pain in
the hip without obvious antecedent trauma
1
.
Some subchondral insufficiency fractures of the femoral head resolve
spontaneously
2,3
, but several have shown progressive collapse requiring surgical
intervention
1
. Findings on magnetic resonance imaging are characterized by a
subchondral linear or serpiginous pattern of very low signal intensity
on T1-weighted images with an associated bone-marrow edema pattern.
This subchondral low-intensity band has been shown histologically
to be a fracture line
4
.
In a recent study, eleven subchondral insufficiency fractures of
the femoral head were associated with rapid destruction of the hip
joint similar to that seen in rapidly destructive arthrosis of the
hip joint
5
. The prognosis for subchondral insufficiency fractures of the femoral
head thus remains unclear.
Previous investigators have examined . . . [Full Text of this Article]

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