A 76-year-old man was fishing in a stream the day after a heavy rain when a tree approximately 40 cm in diameter fell on him. In the supine position, he was pinned under a tree from his right forearm to his left groin and was unable to move (Fig. 1). The patient was rescued 10 h after the accident and transported to the nearest emergency hospital. He was transferred to our emergency room 15 h after the accident for further examination and intensive care. He had no significant medical history and was not taking any medication.
On arrival, his vital signs were as follows: respiratory rate, 30 breaths/min; SpO2, 98% under 3 L O2/min; pulse rate, 94 beats/min; blood pressure, 114/82 mmHg; Glasgow coma scale (GCS), 13; body temperature, 36.6 centigrade. Physical examination revealed swelling and pain in the right forearm and left lower leg (Figs. 2-a and 3-a1). Purpura and blistering were observed on the left foot (Fig. 3-a2). Blood tests showed a marked elevation in muscle enzymes. Serum potassium and lactate levels were elevated. Table 1 presents the results of the laboratory examinations. He was diagnosed with compartment syndrome of the right forearm and left lower leg, as well as crush syndrome. Radiographic examination revealed a left diaphyseal ulnar fracture and left distal clavicle fracture, which were treated conservatively. No fractures were observed in the radius, pelvis, or lower extremities.
Table 1
Laboratory findings at the time of transfer to our hospital
Biochemical tests
|
TP
|
3.4
|
g/dL
|
Na
|
138
|
mmol/L
|
Alb
|
1.8
|
g/dL
|
K
|
5.6
|
mmol/L
|
CK
|
69,613
|
U/L
|
Cl
|
107
|
mmol/L
|
AST
|
525
|
U/L
|
Ca
|
5.2
|
mg/dL
|
ALT
|
160
|
U/L
|
P
|
7.3
|
mg/dL
|
LD
|
1040
|
U/L
|
Mg
|
2.4
|
mg/dL
|
ALP
|
120
|
U/L
|
UA
|
13.2
|
mg/dL
|
γGTP
|
13
|
U/L
|
Glu
|
332
|
mg/dL
|
ChE
|
189
|
U/L
|
HbA1c
|
5.9
|
%
|
Amy
|
923
|
U/L
|
T-Bil
|
0.4
|
mg/dL
|
Cre
|
1.18
|
mg/dL
|
CRP
|
2.48
|
mg/mL
|
BUN
|
24.2
|
mg/dL
|
Mb
|
172,494
|
ng/mL
|
Blood cell counts
|
WBC
|
12,060
|
/uL
|
MCV
|
96.0
|
fL
|
Hb
|
12.2
|
g/dL
|
Plt
|
176,000
|
/uL
|
Ht
|
12.2
|
g/dL
|
|
|
|
Coagulation tests
|
APTT
|
29.4
|
sec
|
FDP
|
332.5
|
ug/mL
|
PT
|
75
|
%
|
D-dimer
|
85.7
|
|
Fib
|
67
|
Mg/dL
|
ATIII
|
48
|
%
|
Blood gas analysis (3 L/min oxygen mask)
|
pH
|
7.350
|
|
HCO3-
|
16.9
|
mmol/L
|
PaCO2
|
31.3
|
mmHg
|
BE
|
-7.3
|
|
PaO2
|
118
|
mmHg
|
Lac
|
64
|
mg/dL
|
TP, total protein; Alb, albumin; CK, creatine kinase; AST, aspartate transaminase; ALT, alanine transaminase; LD, lactate dehydrogenase; ALP, alkaline phosphatase; γGTP, γ-glutamyltransferase; ChE, cholinesterase; Amy, amylase; Cre, creatinine; BUN, blood urea nitrogen; UA, uric acid; Glu, glucose; HbA1c, hemoglobin A1c; T-Bil, total bilirubin; CRP, C-reactive protein; Mb, myoglobin; WBC, white blood cell; Hb, hemoglobin; Ht, hematocrit; MCV, mean corpuscular volume; Plt platelet; APTT, activated partial thromboplastin time; PT, prothrombin time; Fib, fibrinogen; FDP, fibrinogen/fibrin degradation products; ATIII, antithrombin III; pH, potential hydrogen; PaCO2, partial pressure of carbon dioxide; PaO2, partial pressure of oxygen; HCO3,- bicarbonate ion; BE, base excess; Lac, lactate |
The patient was intubated in the emergency room and admitted to an advanced critical care center. After admission, he required immediate blood purification therapy (hemodiafiltration [HDF]) for crush syndrome. Simultaneously, fasciotomies of the right forearm and left lower leg were performed in the emergency department. On the right forearm, a solitary incision was made on the volar side from the medial side of the elbow joint to the radial side of the wrist joint. The flexor digitorum superficialis muscle revealed poor coloration. The volar and mobile compartments were decompressed, but the dorsal compartment was not released based on the findings of swelling and tension (Fig. 2-b). Two incision-leg fasciotomies (medial and lateral) were performed on the left lower leg. All the compartments (anterior, lateral, deep, and superficial posterior) were decompressed. Swelling in the anterior, lateral, and superficial posterior compartments was particularly intense (Fig. 3-b).
Although massive infusion and continuous hemodiafiltration (CHDF) therapy was continued, the serum creatine kinase (CK) level remained elevated even after the initial treatment (Fig. 4). Forty hours after the injury, the left gluteal region of the left thigh was markedly swollen and tense (Fig. 5-a). Intramuscular compartment pressures were measured using an arterial line setup as follows: 56 mmHg in the gluteus maximus, 46 mmHg in the tensor fasciae latae, 19 mmHg in the anterior thigh, and 23 mmHg in the posterior thigh (radial artery blood pressure was 110/58 mmHg). He was diagnosed with compartment syndrome of the left gluteus and thigh, and fasciotomy was performed. A gluteal incision was made according to the Kocher-Langenbeck approach, which is a posterior approach for hip fractures. The incision was extended distally over the lateral thigh (Fig. 5-b1). Three separate anatomical gluteal compartments, the gluteus maximus, gluteus medius/minimus, and tensor fasciae lata, were released. The coloration of the gluteus maximus, gluteus medius, and gluteus minimus was poor. In the thigh, the anterior compartment was released from the same skin incision and the vastus lateralis muscle protruded. The other compartments of the thigh were not released because swelling and tension markedly improved after decompression of the anterior compartment. Thigh muscle color was good (Fig. 5-b2).
No muscle necrosis was observed in the left lower leg. On the 17th day, delayed primary closure was performed on the medial incision wound, and split-thickness skin grafts (STSGs) were performed on the lateral incision (Fig. 3-c). The flexor carpi radialis, flexor digitorum superficialis, and flexor carpi ulnaris gradually became partially necrotic. On the 17th day, the muscles were debrided and NPWT was initiated. On the 21st day, the flexor carpi radialis and palmaris longus muscles became necrotic and were debrided. STSGs was performed on the 28th day (Fig. 2-c).
In the left gluteus and thigh, parts of the gluteus maximus and gluteus medius were necrotic. On the 17th day, NPWT was initiated following debridement. On the 20th day, delayed primary closure was performed on the thigh and NPWT was continued on the gluteal surface. On the 31st day, remained wound was successfully closed (Fig. 5-c).
After transfer to a rehabilitation hospital, the patient was discharged on the 144th day. After discharge, he was living independently without any support and enjoyed hobbies such as mountain stream fishing and running a vegetable garden.