Bilateral transient osteoporosis of the knee in pregnancy

Transient osteoporosis of the knee in pregnancy: A case report and literature review

Transient osteoporosis (TO) is a self-limiting bone disorder with a benign clinical course and unknown etiology, typically manifesting in the third trimester of pregnancy. There are only a few documented cases of TO in pregnant women involving the knee joint. We report a 38-year-old female patient in the third trimester of pregnancy who presented with an 8-week history of progressive worsening of the right knee pain. Clinical and magnetic resonance imaging findings were suggestive of TO with complete resolution of symptoms and imaging findings within several months following the onset of the symptoms. Clinicians need to include TO in their differential diagnosis when treating pregnant women with knee pain.

Transient osteoporosis of pregnancy

Transient osteoporosis of pregnancy (TOP) is a rare yet perhaps under-reported condition that has affected otherwise healthy pregnancies throughout the world. The condition presents suddenly in the third trimester of a usually uneventful pregnancy and progressively immobilizes the mother. Radiographic studies detect drastic loss of bone mass, elevated rates of turnover in the bone, and oedema in the affected portion. Weakness of the bone can lead to fractures during delivery and other complications for the mother. Then, within weeks of labour, symptoms and radiological findings resolve. Aetiology is currently unknown, although neural, vascular, haematological, endocrine, nutrient-deficiency, and other etiologies have been proposed. Several treatments have also been explored, including simple bed rest, steroids, bisphosphonates, calcitonin, induced termination of pregnancy, and surgical intervention. The orthopedist plays an essential role in monitoring the condition (and potential complications) as well as ensuring satisfactory outcomes for both the mother and newborn.

[Acute knee pain in pregnancy. Case report of Regional Transient Osteoporosis]

The article presents the case of a patient who after her first pregnacy, during the immediate postpartum period, suffered a femoral supracondylar fracture complicated by bone marrow edema syndrome (BMES), also known as regional temporary osteoporosis (RTO). The fracture of the distal femur was treated with an open reduction and internal fixation of the distal femur by means of a minimally invasive procedure.

Bilateral transient osteoporosis of the talus in pregnancy

We present the case of bilateral transient osteoporosis of the talus in pregnancy, which is rarely reported in the medical literature, confirmed by pre- and postpartum MRI.A gravid 33-year-old white female G4P2A1 with bilateral transient osteoporosis of the talus confirmed by magnetic resonance imaging (MRI) is presented. She was conservatively managed and had clinical resolution several weeks postpartum. A follow-up MRI confirmed improvement in bilateral talus consistent with the natural course of transient osteoporosis.

Bilateral transient bone marrow edema or transient osteoporosis of the knee in pregnancy

Transient osteoporosis or transient bone marrow edema is an uncommon self-limiting condition of unknown etiology. The most commonly affected joint is the hip, followed by the knee, ankle, and the foot. Simultaneous involvement of both hips has been reported exclusively in pregnant women. Bilateral knee involvement during pregnancy seems to be extremely rare. We present a case of bilateral transient bone marrow knee edema during pregnancy with complete resolution of symptoms and radiological findings after 10 months.

Transient osteoporosis of the knee

A 52-year-old man presented with a 3-week history of right knee pain, significant enough to prevent weight bearing. There was no history of knee injury or disease. On knee examination, an effusion and medial joint line tenderness was noted. Knee range of motion was full, but painful. Radiographs revealed minor osteoarthritic changes. Laboratory values were within normal limits, including those associated with infection. Magnetic resonance imaging showed decreased signal intensity on T1-weighted images within the medial femoral condyle and corresponding increased signal intensity on T2-weighted consistent with bone marrow edema as well as edema to the adjacent soft tissues. Bone scanning showed increased uptake of radioisotope in the medial femoral condyle. The patient was diagnosed with bone marrow edema syndrome, and managed medically with analgesics and continued non weight-bearing status. At the 1-month follow-up, his symptoms had improved significantly. The patient progressively increased weight bearing as tolerated over the subsequent weeks. At 12-week follow-up, symptoms had completely resolved. Magnetic resonance imaging showed no signal abnormalities in the affected knee. Transient osteoporosis is an uncommon and typically self-limiting condition that can be challenging to diagnose and treat. The clinician must be aware of this entity, as well as its typical course, to prevent unnecessary testing and invasive intervention.