Feel the free-glide difference with the new OAK Orthosis from Fillauer. The OAK (Osteo-Arthritis Knee) polycentric orthotic knee joint has been engineered to provide motion that better approximates normal physiologic knee movement for use in a custom Osteoarthritic Knee Orthosis. Unlike simple pivot knee joints, the polycentric action of the OAK provides inherent stability at full extension and easy gliding during swing phase. This allows the patient to feel the “glide flex” stability during the first 5° of flexion.
The laterally mounted OAK joint also incorporates proximal and distal mounting plates with an adjustable range of 6° of genu varum to 30° of genu valgum. This allows the orthotist to fine-tune the amount of medial compartment unloading, to help relieve pain in the knee joint.
OAK features a full range of knee flexion from 12°-150° with a 15° extension stop and 90° flexion stop. The Scandinavian inspired OAK provides function in a thin, cosmetic, and streamlined package and is constructed of special high strength aluminum and stainless steel. You will feel the difference.
The anterior proximal thigh and distal calf cuffs of the OAK brace have been designed with additional anatomic geometry to optimize comfort and rotation control. The use of the OAK polycentric knee mechanism better approximates the normal physiologic motion in the sagittal as well as the transverse plane. Many designs simply use a unicentric hinge joint that rotates anterior to find the position of the instantaneous center, whereas the polycentric joint remains in position throughout flexion.
The Comfil® TFC version uses a lightweight thermoformable carbon composite material that is easily remolded using a heat gun. The Kydex® and ABS versions use a lightweight impact resistant material and is also easily remolded using a heat gun.
Specifications
| Thigh Sizes | Small 15-18”, Medium 18-22”, Large 22-25”, X-Large 25-29” |
|---|---|
| Shin Sizes | Small 12-15”, Medium 15-17”, Large 17-19”, X-Large 17-19” |
| Weight | Comfil® version: 1.24 lbs, Kydex® version: 1.58 lbs ABS version: 1.58 lbs, ABS short version: 1.19 lbs |
| Coronal Adjustment Range | 30° Valgum, 6° Varum |
| Sagittal Range | 0°-135° with optional stops at 90° and 15° flexion |
| Pad Construction | PolyFoam with shear netting and silicone beads Silicone popliteal pad |
| Suspension | Volumetric high compression and popliteal suspension |
| Hinge Mechanism | Polycentric 4-bar glide flex action with stabilizing position at full flexion |
| Warranty | 1 year warranty on frame and hinges, 6 month warranty on soft goods |
Features
- Reduces knee pain and helps conserve energy
- Anatomic fit for increased comfort and support
- Geometrically aligned to open medial compartment
- Patented 30° valgum and 6° varum adjustment
- Kydex®, ABS, or Comfil® Thermo Formable Composite cuffs
Indications
- Mild to severe medial unicompartmental osteoarthritis
- Osteoarthritis requiring adjustable compartmental unloading
- Patients needing adjustable fitted cuff options
- Patients requiring polycentric knee motion
Contraindications
- Lateral unicompartmental or bicompartmental osteoarthritis
- Low load tolerance of at thigh and shin
- Thin skin or risk of skin breakdown
- Patients with minimal or painful popliteal area for suspension
- Patients requiring more than two knee stops
- Severe knee sprain or ligamentous damage
- ACL and/or PCL ligamentous damage
- Thigh circumferences greater than 29” in. (custom thigh cuffs can be made)
L-Codes
- L-1843 – (Off-the-Shelf) KO, single upright, thigh and calf, with adjustable flexion and extension joint (unicentric and polycentric), medial-lateral and rotation control, with or without varus/valgus adjustment, prefabricated, includes fitting and adjustment.
- L-1844 – (Custom) KO, single upright, thigh and calf, with adjustable flexion and extension joint (unicentric or Polycentric), medial-lateral and rotation control, with or without varus/valgus adjustment, custom fabricated.
Suggested L-Codes are provided as a reference only, it is the responsibility of the practitioner to confirm this information.
US Patent: No. 6,540,709.B1
European Patent: No. 1115356
Swedish Patent: No. 99952861.5
German Patent: No. DE699131790
OAK™ Orthotic Knee Joint Kit
| 023990 | OAK™ Orthotic Knee Joint, Right |
| 1 | 023900 | OAK Joint, Right | |
| 2 | 023979 | Flex/Ext Stop Pins, (2) | |
| 885345 | Hex Key 1/8" | ||
| 023980 | Mounting Kit |
| 3 | 023985 | External Alignment Block (2) | ||
| 4 | 023987 | Mounting Nut (4) | ||
| 5 | 023984 | Internal Mounting Plate (2) | ||
| 6 | 885901 | Mounting Screw 5/8" (4) | ||
| 7 | 023982 | Alignment Washer (4) | ||
| 8 | 023981 | Spherical Washer (4) | ||
| 9 | 885903 | Mounting Screw 3/4" (2) |
| 023991 | OAK™ Orthotic Knee Joint, Left |
| 1 | 023901 | OAK Joint, Left | |
| 2 | 023979 | Flex/Ext Stop Pins, (2) | |
| 885345 | Hex Key 1/8" | ||
| 023980 | Mounting Kit |
| 3 | 023985 | External Alignment Block (2) | ||
| 4 | 023987 | Mounting Nut (4) | ||
| 5 | 023984 | Internal Mounting Plate (2) | ||
| 6 | 885901 | Mounting Screw 5/8" (4) | ||
| 7 | 023982 | Alignment Washer (4) | ||
| 8 | 023981 | Spherical Washer (4) | ||
| 9 | 885903 | Mounting Screw 3/4" (2) |
Sizing and Selection
Measurements taken six inches above and six inches below mid-patella with knee fully extended.
| 6" Above | 6" Below | |
|---|---|---|
| Small | 15-18" (38-46 cm) | 12-15" (30-38 cm) |
| Medium | 18-22" (46-56 cm) | 15-17" (38-43 cm) |
| Large | 22-25" (56-63 cm) | 17-19" (43-48 cm) |
| X-Large | 25-29" (63-74 cm) | 17-19" (43-48 cm) |
OAK Orthosis, Comfil® TFC
| 024200 | OAK Orthosis, Comfil® TFC, Small, Right |
| 024201 | OAK Orthosis, Comfil® TFC, Small, Left |
| 024202 | OAK Orthosis, Comfil® TFC, Medium, Right |
| 024203 | OAK Orthosis, Comfil® TFC, Medium, Left |
| 024204 | OAK Orthosis, Comfil® TFC, Large, Right |
| 024205 | OAK Orthosis, Comfil® TFC, Large, Left |
| 024206 | OAK Orthosis, Comfil® TFC, X-Large, Right |
| 024207 | OAK Orthosis, Comfil® TFC, X-Large, Left |
| 024198 | OAK Orthosis, Comfil® TFC, Custom Cuff Selection |
OAK Orthosis, Kydex®
| 024208 | OAK Orthosis, Kydex®, Small, Right |
| 024209 | OAK Orthosis, Kydex®, Small, Left |
| 024210 | OAK Orthosis, Kydex®, Medium, Right |
| 024211 | OAK Orthosis, Kydex®, Medium, Left |
| 024212 | OAK Orthosis, Kydex®, Large, Right |
| 024213 | OAK Orthosis, Kydex®, Large, Left |
| 024214 | OAK Orthosis, Kydex®, X-Large, Right |
| 024215 | OAK Orthosis, Kydex®, X-Large, Left |
| 024199 | OAK Orthosis, Kydex®, Custom Cuff Selection |
OAK Orthosis, ABS
| 024216 | OAK Orthosis, ABS, Small, Right |
| 024217 | OAK Orthosis, ABS, Small, Left |
| 024218 | OAK Orthosis, ABS, Medium, Right |
| 024219 | OAK Orthosis, ABS, Medium, Left |
| 024220 | OAK Orthosis, ABS, Large, Right |
| 024221 | OAK Orthosis, ABS, Large, Left |
| 024222 | OAK Orthosis, ABS, X-Large, Right |
| 024223 | OAK Orthosis, ABS, X-Large, Left |
| 024196 | OAK Orthosis, ABS, Custom Cuff Selection |
OAK Short Orthosis, ABS
| 024224 | OAK Short Orthosis, ABS, Small, Right |
| 024225 | OAK Short Orthosis, ABS, Small, Left |
| 024226 | OAK Short Orthosis, ABS, Medium, Right |
| 024227 | OAK Short Orthosis, ABS, Medium, Left |
| 024228 | OAK Short Orthosis, ABS, Large, Right |
| 024229 | OAK Short Orthosis, ABS, Large, Left |
| 024197 | OAK Short Orthosis, ABS, Custom Cuff Selection |
Custom Orthosis
Custom fabricated orthosis made to measurements for CAD model or patient cast
| 503170 | OAK Orthosis, Comfil® TFC, Custom with Joint |
| 503180 | OAK Orthosis, Kydex, Custom with Joint |
| 503200 | OAK Orthosis, ABS, Custom with Joint |
| 503190 | OAK Short Orthosis, ABS, Custom with Joint |
Accessories
Silicone Strap Pad
Optional accessory to aid in suspension and comfort
| 024300BLK | Silicone Strap Pad, Black |
OAK Padding Kit
| 024400 | OAK Brace Padding Kit, Small, Right |
| 024402 | OAK Brace Padding Kit, Small, Left |
| 024404 | OAK Brace Padding Kit, Medium, Right |
| 024406 | OAK Brace Padding Kit, Medium, Left |
| 024408 | OAK Brace Padding Kit, Large, Right |
| 024410 | OAK Brace Padding Kit, Large, Left |
| 024412 | OAK Brace Padding Kit, X-Large, Right |
| 024414 | OAK Brace Padding Kit, X-Large, Left |
Padding Kit includes upper pad, lower pad, and (16) adhesive hook dots
OAK Short Padding Kit
| 024416 | OAK Short Brace Padding Kit, Small, Right |
| 024418 | OAK Short Brace Padding Kit, Small, Left |
| 024420 | OAK Short Brace Padding Kit, Medium, Right |
| 024422 | OAK Short Brace Padding Kit, Medium, Left |
| 024424 | OAK Short Brace Padding Kit, Large, Right |
| 024426 | OAK Short Brace Padding Kit, Large, Left |
Padding Kit includes upper pad, lower pad, and (16) adhesive hook dots
OAK Strapping Kit
| 024600 | OAK Brace Strapping Kit, Small, Right |
| 024602 | OAK Brace Strapping Kit, Small, Left |
| 024604 | OAK Brace Strapping Kit, Medium, Right |
| 024606 | OAK Brace Strapping Kit, Medium, Left |
| 024608 | OAK Brace Strapping Kit, Large, Right |
| 024610 | OAK Brace Strapping Kit, Large, Left |
| 024612 | OAK Brace Strapping Kit, X-Large, Right |
| 024614 | OAK Brace Strapping Kit, X-Large, Left |
Strapping Kit includes (4) straps, (4) chafes, and (8) rivets
For more information and ordering email Customer Service or call 1-800-251-6398.
