Spontaneous compartment syndrome in a patient with diabetes and statin administration: a case report
© Springer-Verlag 2008
Received: 25 February 2007
Accepted: 8 April 2008
Published: 14 May 2008
Compartment syndrome is a condition characterized by pressure increasing in the inextensible muscular compartments that leads to a decrease of capillary perfusion with consequent ischemic lesions of the logia elements. The authors report a case of an unusual compartment syndrome with spontaneous onset in a patient with type II diabetes and chronic therapy with statins (Atorvastatin). The condition was successfully treated by a fasciotomy and medical support. The importance of a correct anamnesis and a high level of suspicion is emphasized.
Compartment syndrome (CS) is a situation in which there is an increase in interstitial pressure in an osteofascial compartment causing a decrease in tissue perfusion, and ischemic lesions in the nervous and muscular structures . The acute and chronic forms can be distinguished from each other.
The most frequent cause of acute compartment syndrome (ACS) is linked to traumatic injuries of both the bone and the soft tissues . However, surgery can lead to ACS due to an erroneous position of the patient on the operating table, for trendelenburg, prolonged hypotension or a specific operation, such as intramedullary osteosynthesis [3, 4].
Chronic compartment syndrome (CCS) is rarer than ACS. This condition caused by intense muscular stress is typical in athletes . However, other possible etiopathogenic factors, such as primitive and secondary myopathies [8–10], statin assumption [11, 12], ischemic pathologies  metabolic disorders (mellitus diabetes [13, 14] and hyperaldosteronism), are also observed.
A 46-year-old Caucasian man complained of pain bilaterally localized in the legs while at rest, which improved ten minutes after onset but then resumed thirty minutes later.
He was admitted to the Emergency Department where, in absence of other signs, he was diagnosed with bilateral sciatic pain and treated as an outpatient.
The day after the patient returned to the hospital complaining that there was no improvement in symptomatology. On examination, the left leg was swollen with a tense elastic consistency, and compression of the anterior and posterior leg compartments caused pain.
Palpation reveled a termic gradation from the middle third of the leg down. There was hyposthenia of the extensor communis digitorum (ECD) and of the extensor proprius hallucis (EPH) and plantar foot anaesthesia.
Because of the severity of the case the patient was admitted to the orthopaedic ward for treatment.
The patient has suffered from renal failure since he was 18 years old. This is caused by an unknown inflammatory disorder. He was treated with ramipril 2.5 mg/die and acetylsalicylic acid 100 mg/die, and in addition atorvastatin 10 mg/die due to hyperlipidemia for 3 years.
Measuring the intracompartmental pressure with the Striker system revealed 97 mmHg pressure in the anterior logia and 62 mmHG pressure in the posterior logia. An echo-color Doppler evidenced diffused angiosclerosis, calcific atheromatous lesions with good distal hemodynamic compensation and posterior tibial artery obstruction.
The venous system was pervious.
CS was diagnosed given the simptomatology, the increasing pain and the intracompartmental pressure values, and a mini invasive fasciotomy of the posterolateral and anterolateral compartments was performed. The muscles appeared to be ischaemic and oedematous but a little improvement of EPA and ECD function and a relief of pain was already noted in theatre.
In the first postoperative day the patient complained about continuous pain in the calf and Achilles tendon medial surface. The LDH, CK-CPK, myoglobinemia, aldolase, GOT and GPT blood tests were very elevated (CPK 9,351 U/l). The next test showed an improvement in the ematochemical levels which normalized after two weeks.
The electrolytes ematochemical levels were normal and the self-antibody research was negative as well. Electromyography indicated a myogenic lesion.
After 15 days surgery was performed by cutaneous accesses closure. However, on the 25-postoperative day an ischemic area in the Achilles tendon medial surface was evident where the patient had previously complained of pain. The lesion became more evident each day, developing into an ulcer 3 mm deep and successively resolved by second-intention healing.
We discharged the patient 30 days after surgery and rehabilitation was started immediately. At the first year follow up a decrease of ROM in the ankle was noted, particularly in dorsal flexion, weakness and hypotrophy of the leg were seen.
Traumatic compartment syndrome is a well-known condition and usually easily recognized for its high level of suspicion. Otherwise, the Chronic Form is insidious and difficult to diagnose if the patient is not an athlete and there is no temporal correlation with excessive physical stress.
Our case is unusual because it is not very easy to place it in a specific category; the onset was acute but the predisposing factors more typical of chronic forms are easily recognizable. Moreover, the patient was not an athlete and he was at rest during the onset.
The revascularization origin, before being suspected, was excluded by echo-colo-doppler; the biopsy indicated an autoimmunogenic, parasitic or allergic myopathy.
Actually this aspect is still obscure; nevertheless, it was not confirmed by any variation in white blood cells or the presence of self-antibodies and consequently this hypothesis was rejected.
The other hypothesis derived from two specific factors: the diagnosis of type-II Diabetes Mellitus (DM) done during the hospitalization and the three-year administration of atorvastatin.
In literature, we found different descriptions of spontaneous CS associated to DM and to bad glycemic control [13–17]. Nevertheless, these refer to type-I DM; our case referred to type-II and there was no history of uncontrolled glycemia; in addition the diabetes was asymptomatic.
Statins are used for hyperlipidemia therapy. They act by inhibiting HMGCoA reductase, a fundamental enzyme to produce cholesterol–LDL complexes in the liver. We know that they can determine rhabdomyolysis  but not manifested CS.
Our case is the first described in literature which includes the contemporaneous presence of the two risk factors. In our case, the administration of atorvastatin compounded the condition already partially compromised by diabetic microangiopathy, followed by rhabdomyolysis and CS. Acute and CCS is a partially unknown, particularly complex situation. If the traumatic forms are easy to diagnose because of the high level of suspicion, the non-traumatic form presents some difficulty that underlines the importance of a correct patient interview. The administration of statins combined with type-II DM activate a vicious circle (inflammation–oedema–necrosis–inflammation), which gives a clear manifestation of compartment syndrome. Our case highlights that a complete and accurate clinical history is essential to make a correct diagnose, thus, facilitating a proper therapy for difficult-to-diagnose cases of CS.
Conflict of interest statement
The authors declare that they have no conflict of interest related to the publication of this manuscript.
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