**Exhibit 10.88**

**SYSTRANFinancial Services Corporationa subsidiary of Textron Financial Corporation**

COLLATERALIZEDGUARANTY AGREEMENT

ThisGuaranty Agreement (“Guaranty”) is made by Crdentia Corp., Health IndustryProfessionals, L.L.C., Mint Medical Staffing Odessa, LP, Prime Staff, LP, andStaff Search Acquisition Corp., the undersigned guarantor (individually andcollectively “Guarantor”), whose address is set forth on the last page hereof..

Arizona Home HealthCare/Private Duty, Inc., Care Pros Staffing, Inc., Baker Anderson Christie,Inc., New Age Staffing, Inc., PSR Nurses, Ltd., Nurses Network, Inc. (individuallyand collectively “Customer”), each who have an address at 5001 LBJ Freeway,Suite 850 applied to Systran Financial Services Corporation, a subsidiary ofTextron Financial Corporation (“SYSTRAN”) for factoring services, and as acondition of providing such services to Customer, SYSTRAN has requiredGuarantor to provide a Guaranty on the terms and conditions hereinafter setforth.

Guarantor acknowledges andunderstands that this Guaranty is made for the purpose of providing additionalsecurity to SYSTRAN to provide factoring services to Customer.

Therefore, in consideration ofproviding such services to Customer, Guarantor unconditionally covenants,warrants and agrees with SYSTRAN as follows:

1.  The assumption by Guarantor of theobligations described herein will result in a direct financial benefit both toGuarantor and to Customer.

**2.  Guarantorunconditionally and irrevocably guarantees to SYSTRAN (except as hereinafterexpressly provided as to revocability), without offset or deduction, the promptpayment and/or performance of all indebtedness, obligations and liabilities ofCustomer at any time owing to SYSTRAN, whether direct or indirect, matured orunmatured, primary or secondary or certain or contingent (individually, a “GuaranteedObligation” and, collectively, the “Guaranteed Obligations”).   The obligation of Guarantor hereunder shallbe absolute and unconditional and shall remain in full force and effect untilall other Guaranteed Obligations have been discharged and satisfied in full andSYSTRAN has expressly acknowledged the same.**

The obligations of Guarantorhereunder shall not be affected by the voluntary or involuntary liquidation, dissolution,sale or other disposition of all or substantially all of the assets of Customeror by Customer’s insolvency, receivership, bankruptcy, assignment for thebenefit of creditors, or similar proceedings affecting Customer or any otherGuarantor of Customer’s obligations to SYSTRAN. The obligations of Guarantor shall remain in full force and effectwithout regard to any extension or modification of terms between SYSTRAN andCustomer.

Guarantor further unconditionallyguarantees and agrees to pay SYSTRAN any and all payments or transfers made byCustomer to SYSTRAN under the Factoring Agreement and/or the Deposit andSecurity Agreements contained therein, which payments and/or transfers areavoided as preferential transfers, fraudulent transfers or otherwise in abankruptcy or other proceeding involving Customer, whether or not Customer’sFactoring Agreement has been terminated, renounced or surrendered, or Customerhas been discharged from its obligations thereunder.

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3.  No set off, counterclaim, reduction ordiminution of any obligation or any defense of any kind or nature whichCustomer may have against SYSTRAN shall be available to Guarantor hereunder,and Guarantor hereby expressly waives the same as to SYSTRAN.

4.  Guarantor waives notice of any kind toGuarantor personally and agrees that any notice given to Customer shall also bedeemed adequate notice to Guarantor.

5. This Guaranty shall bedeemed to be a contract under the laws of the State of Oregon and for allpurposes shall be governed by and construed in accordance with the laws of thatstate.  Guarantor irrevocably agrees thatany legal action or proceeding brought by or against Guarantor with respect tothe Agreement shall be brought in the courts of the State of Oregon or in theU.S. District Court for the District of Oregon. Guarantor consents to the jurisdiction of such courts and that the venuefor any such action shall be the County of Multnomah.  This provision shall not limit the right ofSYSTRAN to bring such actions or proceedings against Guarantor in the court ofsuch other states or jurisdictions where Guarantor may be subject tojurisdiction.

6.  If SYSTRAN retains the services of anattorney to enforce this Guaranty, Guarantor agrees to pay attorney’s fees andother costs and expenses incurred by SYSTRAN even though no suit or action isfiled.  If a suit or action is filed, theprevailing party shall be entitled to recover, in addition to costs andexpenses, such award of attorney’s fees as the trial or appellate court deemsreasonable.

7.  Upon the occurrence of a default by Customerwith respect to any of its obligations to SYSTRAN under the FactoringAgreement, SYSTRAN shall then have the immediate right to proceed first anddirectly against Guarantor under this Guaranty without proceeding againstCustomer or exhausting any other remedies which it may have against Customer’sobligations to SYSTRAN.

Guarantor hereby waives anyclaim, right or remedy which such Guarantor may now have or hereafter acquireagainst Customer that arise hereunder as a result of sums paid to SYSTRANpursuant to this Guaranty including, without limitation, any claim, remedy orright of subrogation, reimbursement, exoneration, contribution,indemnification, or participation in any claim, right or remedy of SYSTRANagainst Customer or any security which SYSTRAN now has or hereafter acquires,whether or not such claim, right or remedy arises in equity, under contract, bystatute, under common law or otherwise.

8.  No remedy herein conferred upon SYSTRAN is intendedto be exclusive of any other available remedy or remedies, but each and everysuch remedy shall be cumulative and shall be in addition to every other remedygiven under this Guaranty, now or hereafter existing at law or in equity.  No delay or omission by SYSTRAN to exerciseany right accruing upon any default or failure of performance by Customer toSYSTRAN shall be construed to be a waiver thereof, but any such right and powermay be exercised from time to time and as often as may be deemed to beexpedient by SYSTRAN.

9.  SECURITY INTEREST IN ACCOUNTS AND OTHERCOLLATERAL.  As security for Guarantor’sperformance of its obligation arising under this Guaranty, SYSTRAN shall haveand is hereby granted a first-priority security interest in all  present and future Bill(s) and SpecialPurchase Bill(s) of Guarantor, together withall guaranties, security, books and records, accounts, correspondence, anddocuments with respect to such Bills; and, in addition, all now existing or hereafter acquired accounts,inventory, goods, equipment, deposit accounts, chattel paper, contract rights,real estate, fixtures, general intangibles, choses of action, insurancecontracts, instruments, and documents, and the proceeds of the foregoing,including accessions, products and proceeds of the same, including but notlimited to insurance proceeds (the “Collateral”).

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10.  FINANCING STATEMENT.  Guarantor shall not execute or file anyfinancing statement, supplements or amendments thereto, or any other instrumentor security agreement covering the collateral described above in favor ofanyone other than SYSTRAN.  Guarantorshall execute and deliver to SYSTRAN any financing statements, title documents,supplements or amendments thereto and any other instruments which SYSTRAN fromtime to time may reasonably require to perfect, preserve, protect or enforcethe security interest of SYSTRAN hereunder or the priority of such securityinterest.

11.  DEFAULT. Any breach of this Guaranty, including failure to pay any obligationguaranteed, will constitute a default under this paragraph and shall entitleSYSTRAN to pursue all remedies provided to it as a secured party under Article9 of the Uniform Commercial Code, together with any and all other remedieswhich may be available to it under this Guaranty.

12.  JURY TRIALWAIVER. In recognition of the higher costs and delay which may resultfrom a jury trial, the parties waive any right to trial by jury of any claim,demand, action or cause of action (A) arising hereunder, or (B) in any wayconnected with or related or incidental to the dealings of the parties heretoor any of them with respect hereto, in each case whether now existing orhereafter arising, and whether sounding in contract or tort or otherwise; andeach party further waives any right to consolidate any such action in which ajury trial has been waived with any other action in which a jury trial cannotbe or has not been waived; and each party hereby agrees and consents that anysuch claim, demand, action or cause of action shall be decided by court trialwithout a jury, and that any party hereto may file an original counterpart or acopy of this section with any court as written evidence of the consent of theparties hereto to the waiver of their right to trial by jury.

**13.  CREDIT INFORMATION.**By signing this guaranty, Guarantor authorizes SYSTRAN, or any of it’saffiliates, to obtain credit bureau reports, and make other credit inquiriesthat SYSTRAN determines are necessary. On Guarantor’s written request, SYSTRAN will inform Guarantor whether ithas requested a consumer credit report and the name and address of any consumercredit reporting agency that published a report.  Guarantor acknowledges that without furthernotice SYSTRAN may use or request additional credit bureau reports to updateour information so long as Guarantor obligations to SYSTRAN are outstanding.

14.  MISCELLANEOUS PROVISIONS.  This Agreement shall be deemed to be a contract under the laws of theState of Oregon and for all purposes shall be governed by and construed inaccordance with the laws of that state. Guarantor irrevocably agrees that any legal action or proceeding broughtby or against Guarantor with respect to the Agreement shall be brought in thecourts of the State of Oregon or in the U.S. District Court for the District ofOregon.  Guarantor consents to thejurisdiction of such courts and that the venue for any such action shall be theCounty of Multnomah.  This provisionshall not limit the right of SYSTRAN to bring such actions or proceedingsagainst Guarantor in the court of such other states or jurisdictions whereGuarantor may be subject to jurisdiction.

INWITNESS WHEREOF, the Guarantor has executed this Guaranty or has caused thisGuaranty to be executed on its behalf by an officer or other person thereuntoduly authorized on the 8th day of February,2007.

[SIGNATURE PAGES TO FOLLOW]

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| WITNESS (ES)    |                                                                  | CORPORATE OR PARTNERSHIP |
|-----------------|-----------------------------------------------------------------------|--------------------------|
|            |                                                                  | GUARANTOR:               |
|            |                                                                  |                     |
|            |                                                                  | Crdentia Corp.           |
|            |                                                                  | ** **               |
| By:             |         /s/  Shirley Prichard |                     |   | By: |        /s/ James  J. TerBeest |   |
| Print Name:     |       Shirley Prichard                  |                     |   | Print Name: |   | James J. TerBeest |   |
| Print Title:    |                                                                  |                     |   | Print Title: |   | CFO |   |
| Home Address:   |                                                                  |                     |   | Address: |   |   |
|            |                                                                  |                     |   |   |
| Home Telephone: |                                                                  |                     |   | Telephone: |   |   |
|                 |                                                                       |                          |  |  |  |  |  |  |  |  |  |  |  |  |  |

 
| WITNESS (ES)    |                                                                  | CORPORATE OR PARTNERSHIP               |
|-----------------|-----------------------------------------------------------------------|----------------------------------------|
|            |                                                                  | GUARANTOR:                             |
|            |                                                                  |                                   |
|                 |                                                                  | Health Industry  Professionals, L.L.C. |
|            |                                                                  | ** **                             |
| By:             |         /s/  Shirley Prichard |                                   |   | By: |        /s/ James  J. TerBeest |   |
| Print Name:     |      Shirley Prichard                        |                                   |   | Print Name: |      James  J. TerBeest |   |
| Print Title:    |                                                                  |                                   |   | Print Title: |      CFO |   |
| Home Address:   |                                                                  |                                   |   | Address: |   |   |
|            |                                                                  |                                   |   |   |
| Home Telephone: |                                                                  |                                   |   | Telephone: |   |   |
|                 |                                                                       |                                        |  |  |  |  |  |  |  |  |  |  |  |  |

 
| WITNESS (ES)  |                                                                  | CORPORATE OR PARTNERSHIP          |
|---------------|-----------------------------------------------------------------------|-----------------------------------|
|          |                                                                  | GUARANTOR:                        |
|          |                                                                  |                              |
|               |                                                                  | Mint Medical Staffing  Odessa, LP |
|          |                                                                  | ** **                        |
| By:           |         /s/  Shirley Prichard |                              |   | By: |        /s/ James  J. TerBeest |   |
| Print Name:   |       Shirley  Prichard                 |                              |   | Print Name: |      James  J. TerBeest |   |
| Print Title:  |                                                                  |                              |   | Print Title: |      CFO |   |
| Home Address: |                                                                  |                              |   | Address: |   |   |
|          |                                                                  |                              |   |   |
|               |                                                                       |                                   |  |  |  |  |  |  |  |  |  |  |

 

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| Home Telephone: |   |   |   | Telephone: |   |   |
|-----------------|--------|--------|--------|------------|--------|--------|

 

[ADDITIONALSIGNATURE PAGES TO FOLLOWS]

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| WITNESS (ES)    |                                                            | CORPORATE OR PARTNERSHIP |
|-----------------|-----------------------------------------------------------------|--------------------------|
|            |                                                            | GUARANTOR:               |
|            |                                                            |                     |
|            |                                                            | Prime Staff LP           |
|            |                                                            | ** **               |
| By:             |        /s/  Shirley Prichard |                     |   | By: |        /s/ James  J. TerBeest |   |
| Print Name:     |      Shirley Prichard                  |                     |   | Print Name: |   | James J. TerBeest |   |
| Print Title:    |                                                            |                     |   | Print Title: |   | CFO |   |
| Home Address:   |                                                            |                     |   | Address: |   |   |
|            |                                                            |                     |   |   |
| Home Telephone: |                                                            |                     |   | Telephone: |   |   |
|                 |                                                                 |                          |  |  |  |  |  |  |  |  |  |  |  |  |  |

 
| WITNESS (ES)    |                                                            | CORPORATE OR PARTNERSHIP       |
|-----------------|-----------------------------------------------------------------|--------------------------------|
|            |                                                            | GUARANTOR:                     |
|            |                                                            |                           |
|            |                                                            | Staff Search Acquisition Corp. |
|            |                                                            | ** **                     |
| By:             |        /s/  Shirley Prichard |                           |   | By: |        /s/ James  J. TerBeest |   |
| Print Name:     | Shirley Prichard                                                |                           |   | Print Name: |   | James J. TerBeest |   |
| Print Title:    |                                                            |                           |   | Print Title: |   | CFO |   |
| Home Address:   |                                                            |                           |   | Address: |   |   |
|            |                                                            |                           |   |   |
| Home Telephone: |                                                            |                           |   | Telephone: |   |   |
|                 |                                                                 |                                |  |  |  |  |  |  |  |  |  |  |  |  |  |

 

 
|        | Address for Notices  to Systran:        |
|--------|-----------------------------------------|
|   |                                    |
|   | Systran  Financial Services Corporation |
|   | Attn: Credit  Manager                   |
|   | 4949 SW Meadows  Road, Suite 500        |
|   | Lake Oswego,  Oregon 97035              |
|   | P.O. Box 3289                           |
|   | Portland, OR  97208                     |

 

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