Ring Lock Knee Joint

1001

The extended locking surface of this knee joint makes it the strongest ring lock we manufacture.

Item No	Reference	UOM	Name	Joint Size	Upright Dimensions	Midsection Length	Proximal Upr Length (KC)	Distal Upr Length (KC)	Material	Side

1001-A2S-WX	1001-A2S	PR	KJT, Ring Lock, SS, 5/32 x 3/4, PR	A	5/32in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Stainless Steel	Pair
1001-A2S-X	1001-A2S-HALF-L	EA	KJT, Ring Lock, SS, 5/32 x 3/4, LL/RM	A	5/32in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Stainless Steel	Left Lateral/Right Medial
1001-A2S-W	1001-A2S-HALF-R	EA	KJT, Ring Lock, SS, 5/32 x 3/4, LM/RL	A	5/32in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Stainless Steel	Left Medial/Right Lateral
1001-A4-WX	1001-A4	PR	KJT, Ring Lock, ALUM, 1/4 x 3/4, PR	A	1/4in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Aluminum	Pair
1001-A4-X	1001-A4-HALF-L	EA	KJT, Ring Lock, ALUM, 1/4 x 3/4, LL/RM	A	1/4in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Aluminum	Left Lateral/Right Medial
1001-A4-W	1001-A4-HALF-R	EA	KJT, Ring Lock, ALUM, 1/4 x 3/4, LM/RL	A	1/4in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Aluminum	Left Medial/Right Lateral
1001-A4T-WX	1001-A4T	PR	KJT, Ring Lock, SQ ALUM, 1/4 x 3/4, PR	A	1/4in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Square Edge Aluminum	Pair
1001-A4T-X	1001-A4T-HALF-L	EA	KJT, Ring Lock, SQ ALUM, 1/4 x 3/4, LL/RM	A	1/4in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Square Edge Aluminum	Left Lateral/Right Medial
1001-A4T-W	1001-A4T-HALF-R	EA	KJT, Ring Lock, SQ ALUM, 1/4 x 3/4, LM/RL	A	1/4in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Square Edge Aluminum	Left Medial/Right Lateral
1001-A6-WX	1001-A6	PR	KJT, Ring Lock, ALUM, 3/16 x 3/4, PR	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Aluminum	Pair
1001-A6-X	1001-A6-HALF-L	EA	KJT, Ring Lock, ALUM, 3/16 x 3/4, LL/RM	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Aluminum	Left Lateral/Right Medial
1001-A6-W	1001-A6-HALF-R	EA	KJT, Ring Lock, ALUM, 3/16 x 3/4, LM/RL	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Aluminum	Left Medial/Right Lateral
1001-A6S-WX	1001-A6S	PR	KJT, Ring Lock, SS, 3/16 x 3/4, PR	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Stainless Steel	Pair
1001-A6S-X	1001-A6S-HALF-L	EA	KJT, Ring Lock, SS, 3/16 x 3/4, LL/RM	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Stainless Steel	Left Lateral/Right Medial
1001-A6S-W	1001-A6S-HALF-R	EA	KJT, Ring Lock, SS, 3/16 x 3/4, LM/RL	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Stainless Steel	Left Medial/Right Lateral
1001-A6T-WX	1001-A6T	PR	KJT, Ring Lock, SQ ALUM, 3/16 x 3/4, PR	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Square Edge Aluminum	Pair
1001-A6T-X	1001-A6T-HALF-L	EA	KJT, Ring Lock, SQ ALUM, 3/16 x 3/4, LL/RM	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Square Edge Aluminum	Left Lateral/Right Medial
1001-A6T-W	1001-A6T-HALF-R	EA	KJT, Ring Lock, SQ ALUM, 3/16 x 3/4, LM/RL	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Square Edge Aluminum	Left Medial/Right Lateral
1001-A6TI-WX	1001-A6TI	PR	KJT, Ring Lock, TI, 3/16 x 3/4, PR	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Titanium	Pair
1001-A6TI-X	1001-A6TI-HALF-L	EA	KJT, Ring Lock, TI, 3/16 x 3/4, LL/RM	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Titanium	Left Lateral/Right Medial
1001-A6TI-W	1001-A6TI-HALF-R	EA	KJT, Ring Lock, TI, 3/16 x 3/4, LM/RL	A	3/16in x 3/4in	3-3/8in	15-7/8in	21-5/8in	Round Edge Titanium	Left Medial/Right Lateral
1001-B2S-WX	1001-B2S	PR	KJT, Ring Lock, SS, 5/32 x 5/8, PR	B	5/32in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Stainless Steel	Pair
1001-B2S-X	1001-B2S-HALF-L	EA	KJT, Ring Lock, SS, 5/32 x 5/8, LL/RM	B	5/32in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Stainless Steel	Left Lateral/Right Medial
1001-B2S-W	1001-B2S-HALF-R	EA	KJT, Ring Lock, SS, 5/32 x 5/8, LM/RL	B	5/32in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Stainless Steel	Left Medial/Right Lateral
1001-B4-WX	1001-B4	PR	KJT, Ring Lock, ALUM, 1/4 x 5/8, PR	B	1/4in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Aluminum	Pair
1001-B4-X	1001-B4-HALF-L	EA	KJT, Ring Lock, ALUM, 1/4 x 5/8, LL/RM	B	1/4in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Aluminum	Left Lateral/Right Medial
1001-B4-W	1001-B4-HALF-R	EA	KJT, Ring Lock, ALUM, 1/4 x 5/8, LM/RL	B	1/4in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Aluminum	Left Medial/Right Lateral
1001-B4T-WX	1001-B4T	PR	KJT, Ring Lock, SQ ALUM, 1/4 x 5/8, PR	B	1/4in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Square Edge Aluminum	Pair
1001-B4T-X	1001-B4T-HALF-L	EA	KJT, Ring Lock, SQ ALUM, 1/4 x 5/8, LL/RM	B	1/4in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Square Edge Aluminum	Left Lateral/Right Medial
1001-B4T-W	1001-B4T-HALF-R	EA	KJT, Ring Lock, SQ ALUM, 1/4 x 5/8, LM/RL	B	1/4in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Square Edge Aluminum	Left Medial/Right Lateral
1001-B6-WX	1001-B6	PR	KJT, Ring Lock, ALUM, 3/16 x 5/8, PR	B	3/16in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Aluminum	Pair
1001-B6-X	1001-B6-HALF-L	EA	KJT, Ring Lock, ALUM, 3/16 x 5/8, LL/RM	B	3/16in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Aluminum	Left Lateral/Right Medial
1001-B6-W	1001-B6-HALF-R	EA	KJT, Ring Lock, ALUM, 3/16 x 5/8, LM/RL	B	3/16in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Aluminum	Left Medial/Right Lateral
1001-B6S-WX	1001-B6S	PR	KJT, Ring Lock, SS, 3/16 x 5/8, PR	B	3/16in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Stainless Steel	Pair
1001-B6S-X	1001-B6S-HALF-L	EA	KJT, Ring Lock, SS, 3/16 x 5/8, LL/RM	B	3/16in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Stainless Steel	Left Lateral/Right Medial
1001-B6S-W	1001-B6S-HALF-R	EA	KJT, Ring Lock, SS, 3/16 x 5/8, LM/RL	B	3/16in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Round Edge Stainless Steel	Left Medial/Right Lateral
1001-B6T-WX	1001-B6T	PR	KJT, Ring Lock, SQ ALUM, 3/16 x 5/8, PR	B	3/16in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Square Edge Aluminum	Pair
1001-B6T-X	1001-B6T-HALF-L	EA	KJT, Ring Lock, SQ ALUM, 3/16 x 5/8, LL/RM	B	3/16in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Square Edge Aluminum	Left Lateral/Right Medial
1001-B6T-W	1001-B6T-HALF-R	EA	KJT, Ring Lock, SQ ALUM, 3/16 x 5/8, LM/RL	B	3/16in x 5/8in	3-1/8in	14-3/4in	18-5/8in	Square Edge Aluminum	Left Medial/Right Lateral
1001-C6-WX	1001-C6	PR	KJT, Ring Lock, ALUM, 3/16 x 1/2, PR	C	3/16in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Aluminum	Pair
1001-C6-X	1001-C6-HALF-L	EA	KJT, Ring Lock, ALUM, 3/16 x 1/2, LL/RM	C	3/16in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Aluminum	Left Lateral/Right Medial
1001-C6-W	1001-C6-HALF-R	EA	KJT, Ring Lock, ALUM, 3/16 x 1/2, LM/RL	C	3/16in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Aluminum	Left Medial/Right Lateral
1001-C6S-WX	1001-C6S	PR	KJT, Ring Lock, SS, 3/16 x 1/2, PR	C	3/16in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Stainless Steel	Pair
1001-C6S-X	1001-C6S-HALF-L	EA	KJT, Ring Lock, SS, 3/16 x 1/2, LL/RM	C	3/16in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Stainless Steel	Left Lateral/Right Medial
1001-C6S-W	1001-C6S-HALF-R	EA	KJT, Ring Lock, SS, 3/16 x 1/2, LM/RL	C	3/16in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Stainless Steel	Left Medial/Right Lateral
1001-C6T-WX	1001-C6T	PR	KJT, Ring Lock, SQ ALUM, 3/16 x 1/2, PR	C	3/16in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Square Edge Aluminum	Pair
1001-C6T-X	1001-C6T-HALF-L	EA	KJT, Ring Lock, SQ ALUM, 3/16 x 1/2, LL/RM	C	3/16in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Square Edge Aluminum	Left Lateral/Right Medial
1001-C6T-W	1001-C6T-HALF-R	EA	KJT, Ring Lock, SQ ALUM, 3/16 x 1/2, LM/RL	C	3/16in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Square Edge Aluminum	Left Medial/Right Lateral
1001-C8-WX	1001-C8	PR	KJT, Ring Lock, ALUM, 1/8 x 1/2, PR	C	1/8in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Aluminum	Pair
1001-C8-X	1001-C8-HALF-L	EA	KJT, Ring Lock, ALUM, 1/8 x 1/2, LL/RM	C	1/8in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Aluminum	Left Lateral/Right Medial
1001-C8-W	1001-C8-HALF-R	EA	KJT, Ring Lock, ALUM, 1/8 x 1/2, LM/RL	C	1/8in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Aluminum	Left Medial/Right Lateral
1001-C8S-WX	1001-C8S	PR	KJT, Ring Lock, SS, 1/8 x 1/2, PR	C	1/8in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Stainless Steel	Pair
1001-C8S-X	1001-C8S-HALF-L	EA	KJT, Ring Lock, SS, 1/8 x 1/2, LL/RM	C	1/8in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Stainless Steel	Left Lateral/Right Medial
1001-C8S-W	1001-C8S-HALF-R	EA	KJT, Ring Lock, SS, 1/8 x 1/2, LM/RL	C	1/8in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Round Edge Stainless Steel	Left Medial/Right Lateral
1001-C8T-WX	1001-C8T	PR	KJT, Ring Lock, SQ ALUM, 1/8 x 1/2, PR	C	1/8in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Square Edge Aluminum	Pair
1001-C8T-X	1001-C8T-HALF-L	EA	KJT, Ring Lock, SQ ALUM, 1/8 x 1/2, LL/RM	C	1/8in x 1/2in	2-3/8in	—	—	Square Edge Aluminum	Left Lateral/Right Medial
1001-C8T-W	1001-C8T-HALF-R	EA	KJT, Ring Lock, SQ ALUM, 1/8 x 1/2, LM/RL	C	1/8in x 1/2in	2-3/8in	12-5/8in	16-1/2in	Square Edge Aluminum	Left Medial/Right Lateral

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Knee Joint Selection Guide

Discretion in choosing a joint size and designing an appropriate orthosis should be used by the orthotist in all cases. We would reference and support the approach described by Lunsford and agree that successful orthotic management requires a clear understanding of the condition being treated and a realistic plan to address the biomechanical deficits presented.

For optimal orthotic management, the mechicanical demands to be placed upon the orthosis for any given treatment must be understood prior to material selection.

The selection of the correct materials is often the difference between success and failure and we believe that the orthotist is trained and the best qualified to match the characteristics of the material to the biomechanical and functional needs of the patient.

Discretion in choosing a joint size, selecting the Side Bar Material, and designing an appropriate orthosis should be used by the orthotist in all cases. The following factors are commonly used by orthotists to help determine the level of Biomechanical Deficit. Practical issues including compliance, occupation, environment and social factors should also be taken into consideration.

Biomechanical Deficit Factors

Single or multiple plane involvement
Single or multiple segment involvement
Muscle strength/weakness
Range-of-motion
Skeletal and/or joint alignment — malalignment
Mobile or fixed deformity
Presence and magnitude of joint contracture
Presence/extent of spasticity
Proprioceptive and cognitive skills
Progressive or non progressive condition

Biomechanical Deficit		Mild									Moderate									Severe
Activity Level		Low			Moderate			High			Low			Moderate			High			Low			Moderate			High
Patients Weight LBS (kg)		80-140 (36-64)	140-210 (64-95)	210-320 (95-145)	80-140 (36-64)	140-210 (64-95)	210-320 (95-145)	80-140 (36-64)	140-210 (64-95)	210-320 (95-145)	80-140 (36-64)	140-210 (64-95)	210-320 (95-145)	80-140 (36-64)	140-210 (64-95)	210-320 (95-145)	80-140 (36-64)	140-210 (64-95)	210-320 (95-145)	80-140 (36-64)	140-210 (64-95)	210-320 (95-145)	80-140 (36-64)	140-210 (64-95)	210-320 (95-145)	80-140 (36-64)	140-210 (64-95)	210-320 (95-145)
	1001	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	A	B/A	A	—	B/A	A	—
	1002	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	A**	B/A	A	A**	B/A	A**	—
	1003	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	—	A	—	—	A	—	—
	1004	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	—	A	A	—	A	—	—
	1006*	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	—	A	A	—	—	—	—
	1007*	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	—	A	—	—	—	—	—
	1010*	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	—	A	—	—	—	—	—
	1012	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	—	B/A	A	—	—	—	—
	1013*	—	A	—	—	A	—	A	A	—	—	A	—	—	A	—	A	A	—	A	A	—	A	—	—	—	—	—
	1015	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	A	A	A	—	—	—	—
	1017	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	—	B/A	A	—	A	A	—
	1017-A38*	—	—	A	—	—	A	—	—	A	—	—	A	—	—	A	—	—	A	A	A	A	A	A	A	A	A	A
	2004*	B	B	—	B	B	—	—	—	—	B	B	—	B	B	—	—	—	—	B	—	—	—	—	—	—	—	—
	2009*	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	—	A	A	—	A	—	—
	S2001*	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	—	A	A	—	A	—	—
	S2003*	B	A	—	B	A	—	B/A	A	—	B	A	—	B	A	—	B/A	A	—	B/A	A	—	A	A	—	A	—	—

* Not available with titanium uprights.
** Consider ordering with Heavy Duty Rings, Model 1002-A#4HD.
NOTE: Model 1017-A38 is available with aluminum uprights only.

Steel and Aluminum Alloys

Steel is stronger and stiffer than aluminum allow; aluminum allow has a lower density making it lighter. Steel is fatigure resistant and combines high rigidity, or ductility depending on the alloy. The main disadvantage of steel is its weight. The major benefit of aluminum in orthotics is its high strength to weight ratio. Aluminum does however have a lower endurance limit under repreated dynamic loading conditions than does steel. A common clinical question relates to the upright of a lower extremity orthosis in which deformation under bending stresses is very important. In general terms, if loading conditions are known to be great or highly repetitive, steel is superior to aluminum.

Considerations for preventing failure:

Fatigue
Stress Concentration
Finishing
Bend Radii
Design

Side bar material selection guideline by biomechanical deficit and activity level.

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PDF file Knee Joint Biomechanical Control & Applications Chart

The responsibility of accurate coding lies with the patient care facility that is billing for the product and service. The HCPCS Alpha-Numeric System is subject to revisions and periodic updates and should be consulted prior to billing.

Code
L2405