Pm. Bonutti et al., STATIC PROGRESSIVE STRETCH TO REESTABLISH ELBOW RANGE OF MOTION, Clinical orthopaedics and related research, (303), 1994, pp. 128-134
Static progressive stretch (SPS) is a technique using the biomechanica
l principle of stress relaxation to restore range of motion (ROM) in j
oint contractures. Existing techniques such as dynamic splinting and t
raction rely on a time-dependent material property, creep, which appli
es a continuous load. Other techniques, such as serial casting and sta
tic splinting, are time intensive and usually require assistance by a
therapist. This study evaluates SPS via a new orthosis that directly a
pplies SPS incrementally through patient-controlled therapy, allowing
for stress relaxation of contracted tissue. Patients used the device i
n 30-minute treatment protocols. The length of treatment time varied b
etween one and three months. Twenty patients with elbow contractures w
ho had limited success with other treatment modalities including seria
l casting, dynamic splinting, physical therapy, and/or surgery, underw
ent SPS using the new orthosis. The increase in motion for the 20 pati
ents in the study averaged 31 degrees (69%). All patients expressed sa
tisfaction, with no complications and no deterioration in ROM at the o
ne-year follow-up evaluation.